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Research and Knowledge Archives - Page 8 of 9 - The Global Plant Council

Providing For Our Brave New World

By | Blog, Future Directions
The Journal of Experimental Botany (JXB) published a special issue in June entitled ‘Breeding plants to cope with future climate change’

The Journal of Experimental Botany (JXB) published a special issue in June entitled ‘Breeding plants to cope with future climate change

By Jonathan Ingram

The Journal of Experimental Botany (JXB) recently published a special issue entitled ‘Breeding plants to cope with future climate change’.

More often than not, climate change discussions are focused on debating the degree of change we are likely to experience, unpredictable weather scenarios, and politics. However, regardless of the hows and whys, it is now an undeniable fact that the climate will change in some way.

This JXB special issue focuses on the necessary and cutting edge research needed to breed plants that can cope under new conditions, which is essential for continued production of food and resources in the future.

The breadth of research required to address this problem is wide. The 12 reviews included in the issue cover aspects such as research planning and putting together integrated research programs, and more specific topics, such as the use of traditional landraces in breeding programs. Alongside these reviews, original research addresses some of the key questions using novel techniques and methodology. Critically, the research presented comes from a diversity of labs around the world, from European wheat fields to upland rice in Brazil. Taking a global view is essential in our adaptation to climate change.

Avoiding starvation

Why release this special issue now?

Quite simply, the consequences of an inadequate response to climate change are stark for the human population. In fact, as previously discussed on the Global Plant Council blog, changing climate and extreme weather events are already having an impact on food production. For example, drought in Australia (2007), Russia (2010) and South-East China (2013) all resulted in steep increases in food prices. However, a positive side effect of this was to put food security at the top of the global agenda.

A farm in China during drought. Reduced food production can cause steep rises in food prices leading to socio-economic problems.  Photo credit: Bert van Dijk used under Creative Commons License 2.0

A farm in China during drought. Reduced food production can cause steep rises in food prices leading to socio-economic problems.
Photo credit: Bert van Dijk used under Creative Commons License 2.0

Moving forwards, researchers and breeders alike will have to change their fundamental approach to developing novel varieties of crops. In the past, breeders have been highly succesful in increasing yields to feed a growing population. However, we now need to adapt to a rapidly changing and unpredictable environment.

Dr Bryan McKersie sums this up in his contribution to the special issue. He commented: “Current plant breeding methods use large populations and rigorous selection in field environments, but the future environment is different and does not exist yet. Lessons learned from the Green Revolution and development of genetically engineered crops suggest that a new interdisciplinary research plan is needed to achieve food security.”

Driving up yields

So which traits should we be studying to increase resilience to climate change in our crops?

A potentially important characteristic brought to the foreground by Dr Karine Chenu and colleagues (University of Queensland, Australia) is susceptibility to frost damage. Although seemingly counterintuitive at first, the changing climate could result in greater frost exposure at key phases of the crop lifecycle. Warmer temperatures, or clear and cool nights during a drought, would allow vulnerable tissue to emerge earlier in the spring (Gu et al., 2008; Zheng et al., 2012). A late frost could then be incredibly destructive to our agricultural systems, causing losses of up to 85% (Paulsen and Heyne, 1983; Boer et al., 1993).

As explained by Dr Chenu, “Finding frost tolerant lines would thus help to deal with frost damage but also with losses due to extreme heat and drought – as they could be avoided by earlier sowings”.

The authors conclude that a “national yield advantage of up to 20% could result from the breeding of frost tolerant lines if useful genetic variation can be found”. The impact of this for future agriculture is incredibly exciting.

This study is just one illustration of the importance of thinking outside the box and investigating a wide range of traits when looking to adapt crops to climate change.

You can find the full Breeding plants to cope with future climate change Special Issue of Journal of Experimental Botany here. Much of the research in the issue is freely available (open access).

Journal of Experimental Botany publishes an exciting mix of research, review and comment on fundamental questions of broad interest in plant science. Regular special issues highlight key areas.

References

Association of Applied Biologists. 2014. Breeding plants to cope with future climate change. Newsletter of the Association of Applied Biologists 81, Spring/Summer 2014.

Boer R, Campbell LC, Fletcher DJ. 1993. Characteristics of frost in a major wheat-growing region of Australia. Australian Journal of Agricultural Research 44, 1731–1743.

Gu L, Hanson PJ, Post WM et al. 2008. The 2007 Eastern US spring freeze: increased cold damage in a warming world? BioScience 58, 253–262.

Paulsen GM, Heyne EG. 1983. Grain production of winter wheat after spring freeze injury. Agronomy Journal 75, 705–707.

Zheng BY, Chenu K, Dreccer MF, Chapman SC. 2012. Breeding for the future: what are the potential impacts of future frost and heat events on sowing and flowering time requirements for Australian bread wheat (Triticum aestivum) varieties? Global Change Biology 18, 2899–2914.

Nanopores: Next, next generation sequencing

By | Blog, Future Directions

Do you have a genome sequencer in your pocket or are you just happy to see me?

By Nikolai Adamski

On September 4 I attended an event sponsored by Oxford Nanopore Technologies (ONT) at Norwich Research Park, UK, which focused on nanopore technologies. This new technology has been dubbed ‘Next, next-generation sequencing’, and could have really exciting implications for the future of genome sequencing.

ONT has developed a pocked-sized genome sequencing device called the MinION that can sequence genomes in real time. Thanks to recent pop culture this generates visions of cuddly yellow creatures with an overly developed desire to serve super-villains. However, a MinION is actually a new genome sequencing device. To help confused readers, the figure below should help clarify the issue once and for all (Figure 1).

Figure 1: Demonstrating the difference between the pop culture Minion on the left and the genome sequencing MinION on the right.

Figure 1: Demonstrating the difference between the pop culture Minion on the left and the genome sequencing MinION on the right.

The striking thing about the MinION is its size. Sequencing machines these days vary in size from something that sits on a desktop, to something that fills half a student’s room. The MinION however, fits in the palm of your hand. This is possible thanks to highly miniaturized electronics.

So how does it work?

At the core of the MinION are two biological components: the nanopore protein, which gives the company its name, and a motor protein. The nanopore protein sits on top of an artificial layer and acts a microscopic sluice gate that controls how much of the sample solution passes through it into the lower layer. The sample solution contains DNA, but also ions that pass through the nanopore, thus creating a measurable electrical current. If a big molecule like a strand of DNA passes through the nanopore, the flow of ions is perturbed, which results in a change in the electrical current. These changes are recorded and interpreted to give the sequence of said DNA molecule.

Meanwhile, the motor protein sticks to a DNA molecule, attaches itself to the top of the nanopore, and feeds the DNA through the nanopore as a single strand at a certain speed. This process is similar to a ratchet. Each MinION device has thousands of nanopores allowing for as many molecules to pass through and be sequenced in real time. This is nicely illustrated in a video made by ONT, which you can see here which is well worth a watch!

The sequence data are sent to a cloud server in real time, where they are transformed and analyzed and the final data sent back to the user. This eliminates the need for an expensive computer infrastructure as well as the need for extensive training in bioinformatics.

Limitations of the technology

So far so good, but there are still some issues with the MinION system. One of these is the average length of the DNA molecules that can be sequenced. In theory, the MinION system is able to sequence DNA molecules of any length, although the data from users at last week’s event suggests that, at the moment, the average length of sequence obtained is around 6,000 base pairs (bp). This is still a great value, but there is room for improvement. Another issue is the amount of data generated by a single MinION run, which according to user experience is generally around 1Gb, approximately 200 times the size of the gut bacterium E. coli. Both of these issues can be easily remedied by running several MinION sequencers with the same sample.

A larger problem is the matter of sequencing accuracy, which is now somewhere around 90%, although it can be as low as 75%. This can in part be compensated for by the sheer amount of data generated. However, it would require a lot of sequencing to make up for these mistakes, and is a critical point that needs to be addressed by ONT in the future.

Current applications

The MinION system has been and is being used worldwide for a number of different applications. Scientists and medical doctors have used the MinION to monitor strains of the Ebola virus in different patients. Thanks to the real time sequencing data and cloud-based data analysis, patients could be screened within a few days as opposed to weeks. Another interesting example of the usefulness of the MinION system was when scientists travelled to the Tanzanian jungle to assess the biodiversity of frogs in the region.

There are many more fascinating applications for the MinION sequencer. Scientists who are interested can join the MinION Access Programme (MAP) to become part of the research and development community.

I very much enjoyed the ONT event and I am hopeful and curious about what the next few years will bring in terms of innovation and development.

______________________________________________________________________________________________________________________________________

About the Author:

nikolaiadamskiNikolai Adamski is a postdoctoral scientist working at the John Innes Centre in Norwich, UK, in the group of Cristobal Uauy. He studies yield and yield-related traits in wheat, trying to identify the underlying genes to understand the control and regulation of these traits.

 

You can follow him on Twitter @NikolaiAdamski

 

 

Get a new view: attend an interdisciplinary conference

By | Blog, Scientific Meetings

When I first volunteered to write a blog about the Plant Wax 2015 conference, I thought I’d be writing about its relevance to the Global Plant Council’s stress resilience initiative. After all, the waxy coating (cuticle) that covers the aerial surfaces of plants is particularly important as a barrier against water loss and pathogens, while reflecting excess heat and UV radiation.

As it turns out, one of the most important lessons I learned from the meeting was a reminder of the powerful synergy that can happen when people with radically different goals and approaches get together to share ideas.

Water drops on a leaf

Plants are coated with a hydrophobic waxy covering known as a cuticle. Image credit: Adrian Scottow. Licensed under: CC BY-SA 2.0.

A meeting of two worlds

Biologists are from Venus, organic geochemists are from Mars

In the run up to the meeting, held 16–19 June 2015 in beautiful Ascona, Switzerland, I realized that the majority of speakers and delegates were organic geochemists, rather than plant scientists like myself. Other than brief discussions with the academics in the University of Bristol’s School of Chemistry I hadn’t had much interaction with this area of research, so didn’t really know what to expect.

Plant biologists are interested in cuticular waxes because of their impact on the physiology of the plant. The cuticle is composed of many different types of compounds, including alkanes, alcohols, aldehydes, ketones and esters, to say nothing of the more complicated compounds I learnt about at the conference (triterpenoids, anyone?). Each compound gives the wax certain characteristics, making it more suited to a particular environment, or to enhancing a particular function. Many of these changes, however, are yet to be fully understood.

 

The structure of the cuticle

The cuticle is formed of hydrophobic wax compounds on a scaffold of cutin (a polyester polymer), topped with a layer comprising only wax. Image credit: Yeats and Rose, 2013. Plant Physiology.

 

Organic geochemists, on the other hand, extract plant waxes from soils, sediments and rocks and analyze them as an integrated signal to cleverly reconstruct past climates. They typically investigate n-alkanes, the simplest straight-chain compounds found in waxes, which are least likely to break down over time. Amazingly, they can look at the ratio of deuterium (heavy hydrogen, 2H) to normal hydrogen (1H) in the n-alkanes to work out the plants’ source of water, or the ratio of 13C to 12C to work out whether the majority of plants at that time were using C3 or C4 photosynthesis.

The Plant Wax conference was organized to try and bring these two very different groups together, encouraging communication and crossover between research fields, and specifically, to answer the question: what could we learn from each other?

 

Leaf fossil

Plant waxes can be preserved in fossils, but organic geochemists typically look at sediments and sedimentary rocks. Image credit: James St. John. Licensed under CC BY 2.0.

Interdisciplinary cooperation

At the start of the conference, I don’t think the majority of biologists had much knowledge of the finer details of organic geochemistry. Likewise, many geochemists said they only had a general overview understanding of wax biosynthesis and plant physiology. The two fields have very little crossover in the scientific literature.

Since geologists’ isotope studies are based on generalizations made from modern biological studies in a few plant species, the geologists had several requests for biologists. Firstly, to improve climate reconstructions, they asked for more biological data!

The geochemists asked the biologists whether there was anything they could help us with. It was quite hard for me to imagine how their methods – environmental reconstructions of the past based on biological studies – could help us with modern plant biology.

In fact, I felt a little smug. I’d been feeling decidedly ignorant while hearing about ingenious geochemistry research, so I almost felt vindicated: did they need us more than we needed them?

It wasn’t until the last day of the conference that I realized just how wrong I was.

Dr Nikolai Pedentchouk

Dr Nikolai Pedentchouk

One of the last talks was by Dr Nikolai Pedentchouk, University of East Anglia, UK. He’s a collaborator of Amelia Frizell-Armitage, my fellow Global Plant Council New Media Fellow, and works on wheat waxes from an organic geochemist’s perspective.

Nikolai described his research into carbon and hydrogen isotopes in the waxy compounds of glaucous (dull blue-ish grey wax) versus non-glaucous (glossy green) wheat: “I used a field set-up to investigate several issues that are of interest to palaeoecologists and palaeoclimatologists and potentially to plant biochemists. We really wanted to know whether differences in leaf wax composition or amount resulted in differences in the isotope values of individual compound classes”.

How could this isotope research be useful to biologists? Amazingly, it could be used to elucidate the biosynthetic pathways for the different compounds in wheat wax – something that has so far not been possible using standard biological techniques.

“When plants synthesize organic compounds they fractionate stable isotopes, for example 13C vs. 12C and 2H vs. 1H. By measuring the isotopic composition of individual compound classes we could potentially reconstruct the order of reactions that could have led to the biosynthesis of a particular compound”, explained Nikolai.

Glaucous and non-glaucous wheat wax crystals

Wax crystals of glaucous (dull blue-ish grey) and non-glaucous (glossy) wheat wax crystals, taken on a scanning electron microscope. Image credit: Amelia Frizell-Armitage.

New perspectives

Nikolai’s application of geochemical techniques to solve a biological problem really opened my eyes to the innovations that can be made when people from vastly different research backgrounds work together and share ideas. Whether its using quantum mechanics to improve our understanding of photosynthesis, or chemical and computational modeling to advance synthetic biology, interdisciplinary collaboration is driving plant science research forwards, and I encourage you all to think outside your research box too!

Increasing Food Production in a Changing World

By | Blog, Global Change

The fifth report of the International Panel on Climate Change (IPCC) published last year announced that climate change is already negatively affecting our food supply and this problem is only going to be amplified in coming decades.

Our climate is projected to warm by 5ºC by 2050, with increased incidence of extreme weather events. Coinciding with this is a rapidly rising global population, predicted to reach 9.6 billion by 2050. Feeding all these extra mouths is challenge enough. Doing this under changing weather and climate conditions becomes even more difficult.

Food shortages resulting from population growth or unusual weather events can lead to rising food prices and political instability. A global rice shortage in 2008 saw prices rise by over 50%, resulting in riots in Asia and Africa. We might expect events such as this to become more common in the future as the food supply becomes more and more affected by climate change.

Not surprisingly food security is currently a buzz word in the research community, and many resources are being poured into trying to ensure a stable food supply for future generations.

Some climate skeptics argue that increases in carbon dioxide could boost plant growth, resulting in higher yielding plants under climate change. However, the reality is that any positive effect the increased CO2 could have on plant growth is likely to be outweighed by higher temperatures and extreme weather events.

Since the IPCC report there have been a number of studies focussed on the staple food crop wheat, and how yields could be affected in the future.

Wheat

Wheat was first domesticated 10,000 years ago and is now grown more widely than any other crop. Photo by jayneandd used under CC BY 2.0.

Wheat yields are sensitive to temperature, and are predicted to fall by around 6% for every 1ºC rise in temperature. If we do not cut down current emissions, the earth could warm by 5ºC by 2050, equating to a 30% reduction in wheat yields due to temperature increases alone.

This 30% reduction in yield is only the tip of the iceberg. Yields could be further reduced by increased instances of disease epidemics. For example, Fusarium Ear Blight is a wheat disease that causes spikelet bleaching and enhanced senescence. A severe epidemic can wipe out 60% of a wheat crop. In order to take effect, the disease requires wet weather at flowering, something which we can expect to happen more often in the future according to climate models.

Extreme weather events, such as flooding, are predicted to increase over the coming decades, and will cause unavoidable crop losses. This will exacerbate problems with declining yields, further increasing the difficulty of feeding a growing population.

What can we do?

Primarily, we should be trying to limit the extent of climate change, and to do so we need to act now. Reducing emissions and moving to sustainable energy sources should be at the top of the agenda.  However, most climate scientists agree that even if we act now to reduce our emissions, there will be at least 2ºC of warming, which is already impacting on food production.

We therefore need to make our food sources more resilient to climate change. In terms of wheat this means breeding varieties that are tolerant to higher temperatures and diseases. Additionally, we will need to adapt our farming methods, to be more intensive yet sustainable, and perhaps alter our diets.

Stress Resilience Forum, 23–25 October, Iguassu Falls, Brazil

In October the Global Plant Council, in collaboration with the Society of Experimental Biology, will bring together experts from around the world to discuss current research efforts in plant stress resilience. Abstract submission and registration for the Stress Resilience Forum is now open, and we welcome researchers at all levels to take part.

The meeting takes place immediately before the International Plant Molecular Biology Conference (25–30 October), also at Iguassu Falls, and which also includes several scientific sessions on plant stresses.

The Nature of Crop Domestication

By | Blog, Global Change

Why do we eat some plants but not others? What makes a good crop, and how have we transformed these species to suit our own needs?

Around 12,000 years ago, humans began to transition from nomadic hunter-gatherer societies to a more settled agricultural life. We began to selectively breed cereals and other crops to improve desirable traits, such as their yields, taste and seed retention. Today we eat less than 1% of all flowering plant species, relying on a handful of staples for almost all of our calories.

Why do we eat so few plant species?

Professor John Warren, Aberystwyth University

Professor John Warren, Aberystwyth University

We spoke with Professor John Warren at Aberystwyth University in the UK, who delves into the history of crop domestication in his new book, ‘The Nature of Crops: How We Came to Eat the Plants We Do,’ published on 24th April 2015. He blogs about how we came to eat certain plants over at Pick of the Crop, and said that his book developed from there. “The stories of crop domestication are just so interesting, weird, biologically strange, fun – they just demand to be told,” he enthused.

So why do we eat so few of the edible plants in the world? Based on his research into gene flow and plant breeding systems, Professor Warren presents novel theories in his book: “Previously people have argued that it’s because most plant are poisonous, but I don’t think that holds water. We actively seek out toxic plants as crops; plants with large food stores tend to be well defended with toxins. Instead I argue that it’s plant sexual habits that limit crop domestication. Plants with the usual pollination mechanisms don’t make ideal crops as they will fail to set seed when grown on an agricultural scale. Thus we domesticate things that are wind pollinated or pollinated by common generalist insects.”

Science-led crop breeding

Why do we eat poisonous plants?

How did our ancestors come to realise that rhubarb leaves are poisonous but the stems make a tasty crumble? Professor Warren says, “Its discovery was an accident and a fairly recent one – but read the book for the full story.” Image credit: Cory Doctorow used under CC BY-SA 2.0.

Professor Warren works at the Institute of Biological, Environmental and Rural Sciences (IBERS) at Aberystwyth University, which houses much of the research into agriculture and the environment that ties into the theme of his book. “Previously it’s been argued that there haven’t really been any new crops in the last 5,000 years. Here in Aberystwyth, we know that ryegrass, clover, elephant grass and others are still in the process of being domesticated, so you don’t need to be an archaeologist to study the process,” he explained. In addition to breeding new varieties of cereals and forage crops for food and feed, the Public Good Plant Breeding group at IBERS are also in the process of breeding Miscanthus, a fast-growing grass species that could be used for sustainable bioenergy in the future.

Resources like the Diversity Seek (DivSeek) initiative, established by the Global Plant Council in association with the Global Crop Diversity Trust, the CGIAR Consortium and the Secretariat of the International Treaty on Plant Genetic Resources for Food and Agriculture, could be used to enable science-driven crop breeding and domestication. DivSeek aims to unlock the genetic diversity that is currently stored in genebanks around the world by using cutting edge sequencing, phenotyping and ‘big data’ technologies. The genetic variation that is identified can then be used as the basis for breeding programs and could assist in the domestication of novel crops.

The future of agriculture

Drought damage

Drought damage in California, 2014. Image credit: US Department of Agriculture used under CC BY 2.0.

The crops we eat today were domesticated in highly fertile conditions; this means they are nutritious but tend to demand a high input of fertilizers and water. Professor Warren argues that we can use modern science to develop more sustainable ways to feed the global population: “It’s important that we start to think outside the box and try and domesticate a whole range of new crops that are more sustainable and less demanding of agricultural inputs.” An important source of future crop species could be stress-tolerant plants living in difficult environments: “I think the crops of the future could still be waiting to be domesticated from plants growing in harsh conditions,” explained Professor Warren.

Professor Warren also discussed how we could use underutilized crops in new ways to make agriculture more sustainable in the future: “I think and hope that we will eat more species, and that we will grow many more of these as perennials in poly-culture systems. That makes ecological sense in terms of niche exploitation and yield sustainability. It also makes more genetic sense in terms of resistance to pests and diseases.” The only downside, he said, is that these systems are so different to what we have now that we will need innovative research to develop them.


About Professor John Warren

Akee fruit

The akee is the national fruit of Jamaica. Image credit: Loren Sztajler, used under CC BY-ND 2.0.

John is a plant ecologist at Aberystwyth University, UK, with research interests in the origin and maintenance of diversity and enhancement of conservation value, particularly within agricultural ecosystems. He is the Director of Teaching and Learning and a Professor of Botany in the Institute of Biological, Environmental and Rural Sciences. John says the strangest plant he’s ever eaten is the akee, a plant beloved of Jamaicans that looks and tastes a bit like scrambled eggs but which is delicious with saltfish.


Over to you

What do you think will be the most important crops of tomorrow, and which underutilized plants will become dietary staples in an effort to feed the world more sustainably?

Access to crop seeds through an SMTA: what is that?

By | Blog, Future Directions

Carolina Roa, Independent Consultant at CropIP

“We need a material transfer agreement”

Copyright: CIAT, CC BY-SA.

© CIAT, licensed under Creative Commons CC BY-SA.

As a plant breeder in the area of food and agriculture you look for well-characterized ­– or at least well-referenced – plant materials suitable for making crosses and generating populations to be tested for agricultural traits. If you or your organization don’t already have such materials, you are likely to contact people at seed or germplasm banks, research or breeding programs to obtain sexual or vegetative seeds.

Have the entities come back to you saying that to get access to the plant material you and/or your organization need to agree to the terms of a material transfer agreement (MTA)? Have they perhaps used the expression “Standard Material Transfer Agreement (SMTA)”? Likewise, if you wanted to provide germplasm to a colleague or a breeder/researcher at another institute, has your own organization told you that an MTA or an SMTA is required? You may be asking yourself, “What is an MTA or SMTA, and why are they required?” This article aims to address these questions.

International and national contexts behind the agreements

Around 20 years ago, no written agreement was necessary to exchange plant materials used for research, breeding or training in the area of food and agriculture, particularly if one was working in the public sector. A verbal agreement was likely to suffice. The latter, however, meant that access to plant materials depended in great measure on personal or inter-organizational relationships, geographic proximity, reciprocity and mutual gain, and interactions between governments1.

Maize active collection. © Xochilquetzal-Fonseca, CIMMYT, licensed under Creative Commons CC BY-NC-SA.

Maize active collection. © Xochilquetzal Fonseca, CIMMYT, licensed under Creative Commons CC BY-NC-SA.

In the early 1990s the situation changed with the advent of two major international treaties. The Convention on Biological Diversity (CBD), in force since 1993, deals with access to all biological diversity, including all genetic resources, as well as the sharing of benefits arising from their use. The International Treaty on Plant Genetic Resources for Food and Agriculture (ITPGRFA; referred to as the Plant Treaty), in force since 2004, carved a niche for plant genetic resources for food and agriculture (PGRFA) and created a multilateral system to facilitate access and benefit sharing for PGRFA deemed important for food security2.

A large number of countries are members of one or both of these treaties, currently 194 countries in the case of the CBD and 134 in the case of the Plant Treaty. The country members (called Contracting Parties) have implemented national laws and regulatory measures to adopt and adapt these regimes at national levels. Implementation, however, is not uniform. Some countries have amended existing national laws to incorporate the main aspects of the international treaties. Others have issued specific national laws that reproduce the international instruments and have added aspects pertinent to their national contexts, and a number of countries have not yet implemented the treaties at a national level. Therefore, as a plant breeder/researcher you are likely to encounter different rules and conditions for accessing or providing PGRFA, depending on whether the country where the materials are located have implemented the CBD, the Plant Treaty, both or none, and depending on the rules and regulations applicable at the organizations hosting/administering the plant materials, including your own institute.

MTA or SMTA? What’s the difference?

ILRI Forage genebank_ILRI-Stevie Mann-CC BY-NC-SA

ILRI forage genebank © Stevie Mann, ILRI, licensed under Creative Commons CC BY-NC-SA.

Whether an MTA with specific conditions of access and use, or the SMTA with standardized conditions applies for the plant materials to be exchanged depends on whether CBD-derived regulations apply, or whether the Plant Treaty operates. In case CBD rules apply, you or your institute, as a prospective recipient, will receive an MTA with conditions defined by the germplasm provider. You/your institute will need to accept the terms as they are, or try negotiating and modifying them to suit your purposes. This process normally takes time and legal skills. Going through this bilateral negotiation process every time new plant material is requested from another entity could be a deterrent to the research, and breeding work might not progress at the pace and scale that is needed to address growing food security challenges.

The SMTA, as its name indicates, was designed by the negotiators of the Plant Treaty as a standard and multilateral MTA with fixed terms and conditions of access and use, applicable to plant materials from 64 food and feed crops listed in Annex 1 of the Plant Treaty, which are under public management and control and in the public domain. This system is referred to as the Multilateral System of access and benefit sharing (MLS for short). The SMTA also applies to PGRFA placed voluntarily into the MLS by its holders. Therefore, if particular PGRFA required for research, breeding and/or training purposes are under the MLS, the SMTA as it is applies without the need to negotiate terms, saving time and costs.

At this point it is worth clarifying that PGRFA, even belonging to the crops listed in Annex 1 of the Plant Treaty, owned or administered by private corporate entities are generally outside the MLS. Likewise, PGRFA of the listed crops growing in farmers’ fields, or PGRFA under development by breeders or farmers (that is, not ready for commercialization and commonly referred to as ‘breeding materials’) may not be under the MLS. Their inclusion in the MLS is at the discretion of the owner/holder, the grower or the developer of the breeding materials. If they place such materials under the MLS, they will need to use the SMTA as the instrument for access and benefit sharing for the purposes specified in the Plant Treaty. However, the developer is entitled to add terms and conditions to the SMTA.

How the SMTA works3

CIAT Genebank_Luigi Guarino_CC BY

CIAT genebank © Luigi Guarino, licensed under Creative Commons CC BY.

Scope of use – PGRFA under the SMTA can be used for research, breeding and/or training in the fields of food and agriculture. If the intended use is different, e.g., extraction of compounds to be used for chemical or pharmaceutical applications, the SMTA is not the instrument to use. Other conditions dictated by national legislation, the holder/owner of the resources, or both may apply for non-food/feed applications.

Facilitated access – access to PGRFA should be free of charge and expeditious, without the need to track individual accessions. If a fee is charged, it should reflect ‘minimal costs’ related to shipment and transport costs. For instance, costs of seed maintenance, seed production, and the like should not be included.

Provider’s obligations and rights – the main obligations of PGRFA providers include (1) granting ‘facilitated access’ to PGRFA and associated passport data and non-confidential descriptive information, and (2) reporting periodically to the Secretariat of the Plant Treaty about the SMTAs entered into. As a provider and developer of breeding materials, you will have discretion on granting access to such materials while they are under development. If you grant others access to such materials, you’d be entitled to add terms and conditions to the SMTA, including aspects such as payments, limitations on subsequent transfers, etc.

Recipient’s obligations and rights – the main obligations that come with materials received under the SMTA include: (1) to exclusively use them for research, breeding, and/or training related to food and agriculture; (2) to not claim intellectual property rights or any other rights that may limit facilitated access; (3) to use a new SMTA for subsequent transfers; and (4) to report such subsequent transfer to the Secretariat of the Plant Treaty.

If the recipient were to subsequently transfer PGRFA under development, the recipient will act as a provider and in this case, s/he should (1) use a new SMTA; (2) identify in Annex 1 of the new SMTA the material from which the breeding materials were derived; and (3) report this transaction to the Secretariat of the Plant Treaty.

If additional conditions are added to the SMTA for the transfer (or the subsequent transfer) of PGRFA under development, they should go as a separate agreement to the associated SMTA and there is no need to report such add-on conditions to the Secretariat of the Plant Treaty. A recipient of PGRFA, whether under development or not, has no further duties with respect to the actions of a subsequent recipient.

Benefit sharing commitments – As a recipient, you are expected to share the benefits obtained from MLS materials with the agricultural community in general. As an example, granting access for further research and breeding to products developed by incorporating MLS materials received, is one of such benefits. In this case, you may also voluntarily contribute funds to the Benefit Sharing Fund, administered by the Plant Treaty, which finances food and feed-related research projects, mostly in developing economies. Conversely, if you decided to restrict further access to your MLS-derived products, you would be required to pay to the Benefit Sharing Fund either 0.77% or 0.5% of the sales of your product, depending on whether you opted to pay per accession received (first amount) or per crop accessed (second figure). The payment requirement operates regardless of how much MLS-derived material has been incorporated into your product and it will last as long as access to the product is restricted.

Duration – the particular SMTA you entered into will be valid as long as the Plant Treaty remains in force.

Genebanks using the SMTA

Rice seed varieties. Copyright: IRRI CC BY-NC-SA 2.0

Rice seed varieties. © IRRI, licensed under Creative Commons CC BY-NC-SA 2.0.

Apart from national seed collections of member countries, there are international institutions that have placed their seed holdings under the purview of the Plant Treaty.  The International Agricultural Research Centers of the Consultative Group on International Agricultural Research (CGIAR) are among those institutions. Eleven of the CGIAR centers, holding approximately 700,000 accessions of crops listed in Annex 1, as well as non-Annex 1 crops and breeding materials, use the SMTA to transfer these materials for the purposes specified by the Plant Treaty.

The individual websites of the CGIAR centers publish lists of available accessions, and requests can be placed electronically. As a prospective recipient, you should receive confirmation of availability of sufficient seed for shipping together with an electronic copy of the SMTA. You have the options to accept the SMTA terms through a mouse click, by signature, or by ripping the package containing the seed and a printed copy of the SMTA. From this point onwards, the rights and obligations of the SMTA for both providers and recipients start operating.

Therefore, next time you receive an SMTA don’t despair; come back to these notes and seek guidance from the legal or other pertinent office at your organization on how to proceed with this or any other kind of agreement. ©

 

REFERENCES

  1. Halewood, M (2013). What kind of goods are plant genetic resources for food and agriculture? Towards the identification and development of a new kind of commons. International Journal of the Commons 7(2): 278–312.
  2. Moore, Gerard and Tymowski. 2005. Explanatory guide to the International Treaty on Plant Genetic Resources for Food and Agriculture. IUCN, Gland, Switzerland and Cambridge, UK. xii + 212 pp.
  3. Standard Material Transfer Agreement (accessed at http://www.planttreaty.org/content/what-smta).

 

About the author: Carolina Roa is plant biologist and a legal professional with around 25 years of experience. She has worked for the public and private sector in different parts of the world on a range of legal and intellectual-property aspects related to agriculture and biotechnology. Carolina is currently the Principal Consultant at CropIP. She can be reached at carolina@crop-ip.info.

Yes, Africa will feed itself within the next 15 years

By | Blog, Future Directions

Africa will be able to feed itself in the next 15 years. That’s one of the big “bets on the future” that Bill and Melinda Gates have made in their foundation’s latest annual letter. Helped by other breakthroughs in health, mobile banking and education, they argue that the lives of people in poor countries “will improve faster in the next 15 years than at any other time in history”.

Their “bet” is good news for African agriculture: agronomy and its natural twin, agricultural extension, are back on the agenda. If Africa is to feed itself, the women and men who grow its crops need access to technical expertise on how to manage their variable natural resources and limited inputs and market intelligence on what to grow, what to sell and what to keep.

New tools in the hands of farmers

The Gates foundation report outlines that African countries spend $50 billion a year importing food. Nigeria alone imports $500m of rice from Vietnam each year.

But there is no quick fix that will transform African agriculture without skillful agronomy and intelligent extension. Whatever the promises brought by new, drought-tolerant varieties of crops such as maize, they cannot achieve their potential without the wise management of fertilisers, timing of cultivations and appropriate crop rotations.

Bill & Melinda Gates Foundation 

As the graph above shows, sub-Saharan Africa’s crop yields remain very low compared to the rest of the world. Sadly, in our rush for only genetic solutions to increasing agricultural yields, we have ignored the fields and landscapes in which crops are grown. The consequence has been a missing generation of scientifically trained agronomists and agricultural extension workers – who help teach farmers about new farming practices – with the skill sets required to manage resources and apply principles.

Meanwhile, powerful tools such as geospatial mapping, predictive modelling, remote-sensing (using aerial imaging to assess the state of vegetation) and mobile technologies have advanced to a stage where they are of practical use to the scientific agronomist, educated extensionist and literate farmer. We now have a real opportunity to link genetic advances and improved management with the social and economic drivers for African agriculture. This “research value chain” between grower and consumer requires that each research discipline plays an interconnected role with the end-user always in sharp focus.

Soils and sustainability

So, what are the priorities for African agriculture in the next 15 years? First, we must rehabilitate its soils. Since 2015 has been declared as the UN International Year of Soil, we need to recognise that Africa has some of the world’s frailest soils, which have suffered most from “cereal abuse” through the almost continuous cultivation of cereal crops. These monocultures have left Africa’s soils tired and impoverished. Applications of fertilisers will not, by themselves, be enough to save them.

For sustainable agricultural systems, we need to reconsider our addiction to major cereals grown as monocultures and move from “calorie security” to “nutritional security”. For this, nitrogen-fixing leguminous crops have to be part of any solution. In his Noble Peace Prize address in 1970, Norman Borlaug, the father of what became known as the “green revolution” in South Asia, recognised the imbalance between research advances on the major cereals and those on all other crops:

The only crops which have been appreciably affected up to the present time are wheat, rice, and maize… nor has there been any appreciable increase in yield or production of the pulse or legume crops, which are essential in the diets of cereal-consuming populations.

Approaching 50 years later, the situation remains similar. Clearly, improvements in leguminous crops (such as beans and lentils), both in their own right as nutritious sources of food and as rehabilitators of soil, are long overdue. Since 2016 has been declared as the UN International Year of Pulses, there is no better opportunity to redress the historical imbalance noted by Borlaug.

Crops for the future

We also need to recognise that most African family farmers are women. Often the species they cultivate are not the major cash crops grown by men as mechanised monocultures. Rather, they are local “underutilised” species, often legumes and vegetables, which families cultivate in complex landscapes for their own sustenance.

These crops, and the multiple cropping systems which support them, have few influential champions and rarely feature in the research strategies of national and international agencies. But it is crops and agricultural systems such as these that will help Africa feed itself sustainably.

In a very real sense, these “crops for the future” will help diversify Africa’s agriculture to meet the volatile physical and economic climates that lie ahead. Unlike the major crops which have received billions of dollars of support over generations, underutilised crops deserve a “big bet” over the next 15 years if they are to help achieve major breakthroughs for most people in most poor countries.

The Conversation

This article was written by Sayed Azam-Ali, CEO of the Crops for the Future Research Centre and Professor of Global Food Security at University of Nottingham, and originally published at The Conversation.

Read the original article.

B.B. Singh’s quest to make cowpea the food legume of the 21st century

By | Blog, Future Directions

4fig3In 1944, the year Bir Bahadur (B.B.) Singh was born in the state of Uttar Pradesh in India, Indian agriculture was in shambles. During nearly 200 years of British rule, the country’s agricultural enterprise had been turned over to commodities such as cotton, indigo, and sugarcane for export; what little food was grown hinged on rainfall and the soil’s natural fertility—or lack of it. Crop yields were often abysmal as a result, and famine was common. So when India won independence from Britain in 1947, the Indian government enacted a sweeping program of nationwide, agricultural education.

That’s why when Singh graduated in 1956 from his village school with good grades and an interest in science, he found himself at one of India’s newly minted agricultural high schools. It was the only nearby school where he could study science, Singh says, as well as the closest high school to his home. Plus, his father wanted him to attend, saying, “Why don’t you study agriculture and see what help you can give to our people,” Singh recalls.

“So I was okay with going to an agricultural high school, and that later became my good luck,” he says. Turns out it also became the good luck of millions of the world’s smallholder farmers.

Today, Singh is among the most revered breeders of legume—or pulse—crops, credited with improving the diets, incomes, and lives of farming families across Africa, Asia, and South America. In the late 1960s and 1970s, for instance, the ASA and CSSA Fellow not only established the first systematic breeding program for soybean in India, but was also pivotal in bringing the novel food to millions of Indian people. Soybean production has since grown in India from just 5,000 tons in 1961 to about 12 million today. Yet this was only the start.

“Of course, B.B. is best known for his work with cowpea,” says Bill Payne, an ASA, CSSA, and SSSA Fellow who was at Texas A&M and CGIAR in Ethiopia before becoming dean of agriculture at the University of Nevada–Reno this winter. “Almost anywhere in the world, you cannot work on cowpea without running into him in some way, fashion, or form.”

imagesKnown also as black-eyed pea, cowpea is a staple crop in many tropical areas, and Singh’s signature achievement is a fast-maturing variety that fits into the rotational niches between wheat, maize, and rice. Due largely to this advance, worldwide cowpea production rose from 1.3 million to 7 million tons between 1981 and 2013—the only food legume to enjoy such an upswing. But the crop scientist, now in the 48th year of his career, isn’t content to stop there.

“I think there’s a very good possibility that we will have a surge in pulse production in the coming decades,” says Singh, who currently splits his time between Texas A&M University and India’s G.B. Pant University. The title of his new book, Cowpea—The Food Legume of the 21st Century asserts the same.

Those who know him don’t doubt it. “He’s just tenacious,” says CSSA President David Baltensperger, also an ASA and CSSA Fellow. He often compares Singh’s success with cowpea to Norman Borlaug’s accomplishments with wheat. “One of the secrets to B.B., like Dr. Borlaug, has been his ability to keep his eye on what he considers to be really powerful fundamentals. That leads to a lot of success over a long career.”

Good decisions… and a little luck

Focus is indeed crucial for a researcher, and other colleagues add that Singh is highly intelligent, full of energy, and a careful listener—as well as supremely dedicated to helping farmers.

“He is an excellent scientist—I mean, he publishes a lot,” says Ken Dashiell of the International Institute of Tropical Agriculture (IITA) in Ibadan, Nigeria, from which Singh retired in 2006. “But he probably spends 98% of his energy on getting the best cowpea varieties for the farmers, and 2% of his energy on publishing.”

What Singh himself says is that he’s been lucky. “At every stage of my life, some good people have come, given me direction, and good things have happened,” he says. The first stroke of luck came when his father pushed him toward an agricultural high school because it helped gain him admission in 1960 to India’s first agricultural university: Uttar Pradesh Agricultural University (now Pant University).

4fig3Singh then earned a scholarship in 1963 to do graduate studies in plant breeding at the University of Illinois, where again he made a fateful choice. After learning how much research was already under way to improve cereals, Singh resolved to study legumes to help India’s vegetarian multitudes meet their need for protein. And at the University of Illinois, that meant one option: soybean.

“So, that’s how I decided to work on soybean,” he says, “and it was one of the best decisions that I took in my life.”

Soybean contains roughly twice the protein of other pulses, he explains, and by the time he earned his Ph.D., USAID and the University of Illinois were already trying to bring soybean to countries beset by malnutrition, including India. Meanwhile, the dean of agriculture at Pant University was monitoring Singh’s progress, and in 1968 sent him a “very personal and emotional letter,” Singh says. It offered him—now a postdoc at Cornell—an assistant professorship at Pant that included 50% more salary than what a new assistant professor in India typically earned.

Singh had two competing offers from U.S. universities for substantially higher pay, but he never gave the decision a second thought. Later that year, he returned to India to begin the work that would transform soybean from an agricultural novelty into one of the nation’s principal foods.

He might have stayed at Pant for the rest of his career. But in 1977, a change in university administration led to major campus unrest, including the shooting of several staff. Hoping to get away for a “breathing spell,” Singh began looking for other opportunities and was immediately offered soybean breeding positions by the United Nation’s Food and Agriculture Organization (FAO) in Zambia and by IITA in Nigeria. Opting for IITA because of his interest in research, he intended to stay abroad for just two years, but “then based on my work, they kept me there forever, and I spent my life there,” he says.

They asked something else of him, as well: to work not on soybean, but cowpea.

Continue reading this story in the Oct. 2014 issue of CSA News magazine…

This blog was first published by the American Society of Agronomy

https://www.agronomy.org/science-news/bb-singhs-quest-make-cowpea-food-legume-21st-century

Cellulosic Ethanol from Sugarcane in Brazil

By | Blog, Future Directions, Global Change

sugarcane fieldBrazil is a major producer of ethanol from sugarcane, and this leading global position is the fruit of scientific and technological advances resulting from a development program that was initiated in the 1970s. Driven by the oil crises of 1972-1973, Brazil transformed several sugar mills into ethanol producing units that became capable of co-production of ethanol and raw sugar (5). This was technically possible due to the high levels of sucrose in sugarcane and to the development of yeast strains capable of fermenting this sugar efficiently. At the same time, the first automobiles running exclusively on ethanol were introduced, which on the one hand helped Brazil face major world energy crises, and on the other implanted the basis for development of future technologies. Over the following 40 years, Brazilian sugar mills undertook a technological transformation that significantly increased the efficiency of sucrose and alcohol production. This method, now called first generation (1G), has reached a level of 90% conversion of sucrose into ethanol (5). At the same time, advances in sugarcane agricultural technology improved the sugarcane crop to a high level of productivity (averaging 80 tones per hectare). Using intensive breeding programs, a number of sugarcane varieties have been developed that are increasingly better adapted to the diverse climate and soils encountered in Brazil. The result is that Brazil is now the second largest producer of ethanol and the first placed producer of sugarcane in the world.

The necessity to produce second-generation ethanol

Until 2006, Brazil was the only country to produce and use ethanol on a large scale as a fuel alternative for cars. Since then, increased public awareness and governmental focus around the world on issues related to climate change and the excessive use of fossil fuels has led to increased interest in the use of renewable energy. It was at this moment that Brazil, with its highly efficient sugarcane bioethanol sector, became a leader worldwide in the production and use of renewable energy. Nevertheless, production of 1G bioethanol was already at the limit of efficiency both from industrial and agronomical viewpoints.

It was in this context that the Brazilian scientific community and the Federal and State of São Paulo governments took the initiative in the search for ways to increase production of sugarcane ethanol beyond current limits. An idea that was already being revived in several places in the world was the possibility to produce ethanol from sugar polymers, including cellulose, present in cell walls of plants. This search for ‘cellulosic ethanol’ is generally referred to as second-generation (2G) ethanol. Although establishment of 1G technology was highly successful, the potential for ethanol production from 2G is much higher because energy accumulated in sugarcane in the form of sucrose represents only 1/3 of the total. The other two-thirds are distributed equally between the bagasse (stems) and the leaves.

Cell wall recalcitrance

At first sight, the idea of producing ethanol from biomass seems straightforward: it would be enough to convert cellulose to free sugars that could be fermented by yeast. Although many advances have been made in this area, this problem is far from being solved, and developing 2G processes that are economically viable has proven to be a major challenge. The plant cell wall is composed mainly of carbohydrates in the form of polysaccharides that associate to form a supramolecular structure where polymers aggregate through non-covalent linkages. Some polysaccharides are branched with phenolic compounds (ferulic an p-coumaric acids). Ferulic acid can dimerize interlocking polysaccharide chains or these can still undergo polymerization with other phenylpropanoids, including p-hydrocinammic, sinapyl and coniferyl alcohols, forming lignin. Together, the supramolecular structure of cell-wall polymers constitute the main obstacle to enzymatic hydrolysis. Furthermore, known hydrolytic enzymes have molecular sizes that prevent their penetration into the polymer matrix. Therefore, when a mixture of enzymes is added to the surface of the cell wall, the catalytic attack is mainly on the surface of the composite. To perform more complete hydrolysis, enzymatic complexes would have to act in a synergetic fashion on the entire cell wall composite. At present this is not feasible as researchers cannot adequately control the process because very little is known about the synergism between the enzymes involved. One of the principal limitations to understand such mechanisms is that until recently our knowledge of the structure and architecture of the sugarcane cell wall was very limited.

Sugarcane buckAt the biological level, cell wall recalcitrance in plants is thought to be due to the wall’ ability to protect against herbivores and the penetration of pathogens. At the molecular level, the cell wall of sugarcane presents three domains of polysaccharides that interact through non-covalent linkages: the pectic domain, the hemicellulosic domain and the cellulosic domain. The cellulosic domain is embedded within the hemicellulosic domain and both are embedded in the pectin domain. Thus, the basic unit of the cell wall of sugarcane consists of a core with macrofibrils (agglomerated of microfibrils) of cellulose strongly linked to structurally complex hemicelluloses that display a glycomic code, the complex branching pattern of these compounds (2). In addition, this core of polysaccharides is surrounded by an agglomerate of polymers that interact with themselves. Phenolic compounds are also thought to interlock the three polysaccharide domains so that the covalent linkages are protected, effectively sealing the whole unit and creating a structure that is extremely resistant to mechanical, chemical and biochemical degradation.

Several publications produced by the research labs of the National Institute of Science and Technology of Bioethanol (INCT-Bioetanol – www.inctdobioetanol.com.br) have demonstrated that it is possible to disassemble the cell wall using chemical reagents (4). The procedure consists of initially attacking the phenolic compounds and eliminating them from the wall. This makes subsequent separation of the wall polysaccharides possible via treatment with a series of alkali solutions of increasing concentration (6).

A procedure called pretreatment (chemical and physical treatments with hot water, ammonia, acids and/alkali), eliminates the porosity barrier so that all polymers become accessible to attack by hydrolases. However, the branching nature of hemicelluloses still acts as a barrier and prevents further enzyme attack of the polymer chains. This highlights the necessity of using specific enzymatic complexes in order to produce free sugars that can be utilized for fermentation (1-7). As branched hemicelluloses alter the way polysaccharides are recognized by enzymes, their branching pattern (glycomic code) can alter the interaction between enzyme and substrate, affecting enzyme kinetics and cell wall degradation efficiency. The available data shows that the cell wall of sugarcane displays at least 18 glycosidic linkages, and suggests that approximately the same number of enzymes will be necessary to degrade the cell wall completely (5,6). Nevertheless, this chemical process is extremely complicated, laborious and expensive, and this is therefore not a viable strategy for industry.

The collection of enzymes characterized during the first phase of the INCT-Bioetanol contains practically all the catalytic capabilities needed for complete sugarcane cell wall hydrolysis. For this reason, the Institute has reached a point of prioritizing experiments focused on combining enzymes, forming consortia capable of dealing with each of the limiting factors related to recalcitrance. The possible combinations of enzymes have been proposed (1,6) and during the next phase of the project, these strategies will be put into practice by an integrated group of researchers in a series of experiments that will test this hypothesis.

At the same time, it will be necessary to understand the variability in the structure of the sugarcane cell wall in order to find Brazilian sugarcane varieties possessing structures and architectures that are more amenable to hydrolysis. Although the variation in cell wall composition is relatively limited among sugarcane tissues, one may expect to find considerable variation among the great number of extant varieties. This has been recently observed for Miscanthus and maize, two grass species that are genetically related to sugarcane and with very similar cell walls. Several research groups have concentrated efforts on understanding the role of lignin in recalcitrance and have concluded that this interference is somewhat limited. The reduction in lignin content leads in general to an increase in saccharification in a non-linear fashion depending on the pre-treatment, morphological distribution and the level of lignin aggregation (9), suggesting that other cell wall domains make equally important contributions to the recalcitrance of biomass. Research groups of the INCT-Bioetanol have already obtained transformed sugarcane in which the gene encoding one of the enzymes of lignin biosynthesis (COMT) has been silenced. These transgenic plants have cell walls that are modified, and saccharification tests are currently in progress. During the second phase of the INCT we intend to verify whether such genetic variability also exists in sugarcane and to use this information to obtain varieties in which differences among cell wall composition lead to lower recalcitrance to hydrolysis.

 

Marcos S. Buckeridge

msbuck@usp.br

Laboratory of Plant Physiological Ecology, Depatment of Botany, Institute of Biosciences, University of São Paulo (www.lafieco.com.br)

Director of the National Institute of Science and Technology of Bioethanol (www.inctdobioetanol.com.br)

 

REFEFENCES

  1. Buckeridge, M.S., Dos Santos,W.D., Tiné, M.A.S., De Souza, A.P. (2015) Compendium of Bioenergy Crops: Sugarcane edited by Eric Lam. CRC Press, Taylor and Francis (in press)
  2. Buckeridge, M.S. & De Souza, A.P. (2014) Breaking the “glycomic code” of cell wall polysaccharides may improve second generation bioenergy production from biomass. Bioenergy Research DOI 10.1007/s12155-014-9460-6
  3. Buckeridge, M.S.; Souza, A.P.; Arundale, R.A.; Anderson-Teixeira, K.J.; DeLucia, E. (2012) Ethanol from sugarcane in Brazil: a “midway” strategy for increasing ethanol production while maximizing environmental benefits. GCB Bioenergy, 4:119-126.
  4. Buckeridge, M. S. (Org.) ; Goldman, G. H. (Org.) . Routes to cellulosic ethanol. 1. ed. Nova Iorque: Springer, 2011. v. 1. 263p.
  5. De Souza, A. P. ; Grandis, A. ; Leite, D. C. C. ; Buckeridge, M.S. (2014) Sugarcane as a Bioenergy Source: History, Performance, and Perspectives for Second-Generation Bioethanol. Bioenerg Res, 7:24-35.
  6. De Souza, A. P., Leite, D. C. C., Pattathil, S. ; Hahn, M. G. ; Buckeridge, M. S. (2013) Composition and Structure of Sugarcane Cell Wall Polysaccharides: Implications for Second-Generation Bioethanol Production. Bioenergy Research, 6: 564-579.
  7. Mccann, M. ; Buckeridge, M. S. ; Carpita, N.C. . Plants and Bioenergy. 1. ed. New York: Springer, 2013. v. 1. 300p.
  8. Magrin, G.O., J.A. Marengo, J.-P. Boulanger, M.S. Buckeridge, E. Castellanos, G. Poveda, F.R. Scarano, and S. Vicuña, 2014: Central and South America. In: Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part B: Regional Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Barros, V.R., C.B. Field, D.J. Dokken, M.D. Mastrandrea, K.J. Mach, T.E. Bilir, M. Chatterjee,K.L. Ebi, Y.O. Estrada, R.C. Genova, B. Girma, E.S. Kissel, A.N. Levy, S. MacCracken, P.R. Mastrandrea, and L.L. White (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. XXX-YYY
  9. Rezende, C.A.; Lima, M.; Maziero, P.; Azevedo, E.; Garcia, W.; Polikarpov, I. (2011) Chemical and morphological characterization of sugarcane bagasse submitted to a delignification process for enhanced enzymatic digestibility. Biotechnology for Biofuels. 4: 54

Why nutrition-smart agriculture matters

By | Blog, Future Directions, Global Change

Orange Sweet PotatoThe focus of agricultural policy should be to increase productivity, provide employment and reduce poverty.

How often have you read or heard statements like this?

I am an economist, and I understand this thinking. It has its place. But I will argue that the reason global food systems are failing is because they have neglected the most fundamental purpose of agricultural systems — to nourish people.

Today, more than 2 billion people are suffering from hidden hunger — most will get enough calories, which has been the metric for food systems thus far, but not enough vitamins and minerals. We know too well the global costs of this hidden hunger. We see it in women as they risk death during childbirth. We see it in a stunted child with a diminished IQ. And we see it in men and women too weakened by illness and poor immunity to be able to work at an optimal level.

We need to re-envision agriculture as the primary source of sound nutrition through the food people harvest and eat. This is a radical concept in the true sense of the word — returning to the root or fundamental purpose of agriculture.

To read the rest of this blog post that was originally posted on Devex as part of the Feeding Development campaign, please click here.

This blog was written by Howdy Bouis who holds a joint appointment at the International Food Policy Research Institute in Washington, D.C. and the International Centre for Tropical Agriculture in Cali, Colombia.

“Children in Uganda share a plate of orange sweet potato” Photo used in this blog is by: A. Ball / HarvestPlus / CC BY-NC