The native guava is one of the first Australian plants to be pushed to the brink of extinction by a fungal plant disease which has spread rapidly across the globe, according to a new study.
Some plants, like soybean, are known to possess an innate defense machinery that helps them develop resistance against insects trying to feed on them. However, exactly how these plants recognize signals from insects has been unknown until now. In a new study, scientists have uncovered the cellular pathway that helps these plants to sense danger signals and elicit a response, opening doors to a myriad of agricultural applications.
Plants produce the hormone jasmonic acid as a defence response when challenged. This is how they ensure that their predators no longer like the taste of their leaves. Biologists want to find out whether biological precursors and other variants of jasmonic acid lead to similar or different effects. But such derivatives of the hormone have so far been too expensive for experiments and difficult to come by. Researchers have now found a method that might make the production of a biologically significant precursor of jasmonic acid more efficient and cheaper.
A new generation of gene-silencing “RNAi pesticides” are making their way through the regulatory system and will soon be available for agricultural use. However, until recently, there was no method to measure the amount of the pesticide present in the dynamic environment of agricultural soil.
Wheat is one of the most common cereal crops. Scientists all over the world are looking for ways to increase yields. In particular, attempts are being made to make wheat less susceptible to all kinds of diseases caused by adverse weather conditions – excess or lack of moisture, too high or low temperature, etc.
Diseases that devastate African communities are the focus of a brand new short animated film launched by The CONNECTED Virus Network. The network’s focus is bringing together world-class researchers to find ways of tackling crop diseases, caused by plant viruses, which devastate food crops in Sub-Saharan Africa.
Grown around the world, sweet potatoes are an important source of nutrition particularly in sub-Saharan African and Asian diets. Sweet potatoes are especially significant to sub-Saharan Africa as a source of Vitamin A, a nutrient commonly deficient in the region. While China currently produces the most sweet potatoes by country, sub-Saharan Africa has more land devoted to sweetpotatoes and continues to expand production. Farmers elsewhere are also increasingly growing sweetpotatoes.
New research finds that ash dieback is far less severe in the isolated conditions ash is often found in, such as forests with low ash density or in open canopies like hedges, suggesting the long term impact of the disease on Europe’s ash trees will be more limited than previously thought.
A research team has successfully quantified and visualised the impact of Hong Kong air pollution especially ozone pollutant on plants and the environment. Although the experiment took place in a rural area and in Spring, which would usually have a lower average ozone concentration, the pollutant level still reached high enough to do significant damage.
Staying on top of these collections is time-consuming during the best of times, and this task becomes even more complex in the age of social distancing. Yet thousands of scientists across the globe are doing just that, maintaining everything from crickets, to tissue cultures, mice, powdery mildews, nematodes, psyllids, zebrafish and even rust fungi.