Tropical forests are disappearing at an alarming rate through deforestation, but they also have the potential to regrow naturally on abandoned lands. This has been shown by an international study led by scientists from Wageningen University. How a forest recovers, depends on the amount of rainfall, the age of the forest, and the functional characteristics of the tree species.
A new study uses novel single-cell profiling techniques to reveal how plants add new cell layers that help them resist climate stressors like drought or flooding. The research focuses on corn—a critically important crop around the world—in an effort to create a cell-by-cell map of the plant’s root system, which mediates drought stress and absorbs nutrients and fertilizer from the soil.
A research team has discovered how a pathogenic fungus can bypass the immune system of plants. By releasing an ‘effector’ molecule, it avoids elimination at a critical stage in its reproduction cycle.
For plant breeding, it is important to create as many combinations as possible of genetic variants within a short time to select the most suitable candidates between plants with many different characteristics. A working group has now developed a method for using natural variations to identify what are referred to as ‘highly recombinogenic individuals’.
A brown blotch on a plant leaf may be a sign that the plant’s defenses are hard at work: When a plant is infected by a virus, fungus or bacterium, its immune response keeps the disease from spreading by killing the infected cell, as well as a few surrounding ones. A new study points to the evolutionary origins of this plant immune mechanism. The study may help explain how major plant defenses work and how they may one day be strengthened to increase resilience against plant diseases that each year cause billions of dollars of crop losses worldwide.
Iron (Fe) is an indispensable microelement for plant growth and development, but Fe excess can be toxic to plants. To maintain Fe homeostasis, plants must sense the environmental Fe concentration and fine-tune the expression of Fe uptake-associated genes accordingly. Previous studies have shown that bHLH11 is a negative transcription factor that regulates Fe homeostasis. However, the underlying molecular mechanism remains elusive.
Scientists are a step closer to breeding plants with genes from only one parent. New research shows the underlying mechanism behind eliminating half the genome and could make for easier and more rapid breeding of crop plants with desirable traits such as disease resistance.
Photosystem II is a protein in plants, algae and cyanobacteria that uses sunlight to break water down into its atomic components, unlocking hydrogen and oxygen. A longstanding question about this process is how water molecules are funneled into the center of Photosystem II, where water is split to produce the oxygen we breathe. A better understanding of this process could inform the next generation of artificial photosynthetic systems that produce clean and renewable energy from sunlight and water.
Years ago, the African Union decided on an ambitious program: degraded ecosystems in parts of the Sahel are to be successively restored in order to secure food for the people living there and to protect the soil against further degradation. At the same time, the African Great Green Wall is an important contribution to combating climate change. A study now shows that it also makes economic sense – although not everywhere in the Sahel. The analysis also shows how much violent conflicts threaten the success of the program.
With commitments to restore more than 47.5 million hectares of degraded land and forests by 2030, the Philippines, Indonesia, Malaysia and India hope to become exemplar land custodians. While commitments ending deforestation are critical to obtaining that image—Indonesia is one of the world’s poster children for forest loss—even a full halt to natural landscape destruction is only part of the battle to fight climate change and restore myriad ecosystem services, which the United Nations Food and Agriculture Organization simply states, “make human life possible.”
