Why Grass Cereals Are More Drought-tolerant Than Other PlantsMay 2, 2018
Scientists from Julius-Maximilians-Universität Würzburg (JMU) in Bavaria, Germany answered the puzzling question of why cereals are more drought tolerant than other plants. Their answers, published in Current Biology, could help develop crops with better drought resistance.
JMU plant researchers, Professor Rainer Hedrich, Professor Dietmar Geiger, and Dr. Peter Ache found the answers through the mechanisms and components of cereal plants' guard cells. According to them, grass cereals boast two dumbbell-shaped guard cells that form and regulate the pore. Additionally, they are flanked by two subsidiary cells, which absorb and store the potassium and chloride from the guard cells when the pore closes. When the stoma opens, they pass the ions back to the guard cells.
"Our cereals use the subsidiary cells as a dynamic reservoir for osmotically active ions. This ion shuttle service between guard cell and subsidiary cell allows the plant to regulate the pores particularly efficiently and quickly," Prof. Geiger said.
Furthermore, they also found that aside from using abscisic acid (ABA) to measure water availability, grass cereals also use nitrate to assess photosynthetic performance. "By combining the two, the barley is better able than other plants to negotiate between the extremes of 'dying of hunger' and 'dying of thirst' when facing water scarcity," Prof. Hedrich said.
Read the original article in German from JMU.
The Crop Biotech Update is a weekly newsletter of ISAAA, a non-for-profit organization. The CBU is distributed for free to over 23,000 subscribers worldwide to inform them about the key developments in biosciences, especially in agricultural biotechnology. Your support will help us in our mission to feed the world with knowledge. You can help by donating as little as $10.
See more articles:
News from Around the World
- Borlaug Global Rust Initiative Honors Women in Wheat Research
- WEMA Maize Shows Promising Resistance to Fall Armyworm in Mozambique
- Researchers Move Toward Better Understanding of Deadly Citrus Disease
- Cotton Research Goes to Space
- Research Unlocks Rice Gene Diversity for Food Security
- Plant Scientists Boost Malaria Drug Yield in Plant
- Why Grass Cereals Are More Drought-tolerant Than Other Plants
- Europe's Current Approach to Food, Agriculture, and the Environment Not Sustainable, say European National Science Academies
- SlAGL6 Gene is Key to Parthenocarpy in Tomato
- PcWRKY33 Gene from Japanese Knotweed Reduces Salt Tolerance in Transgenic Arabidopsis
- Gene from Wild Peanut Enhances Biotic and Abiotic Resistance in Tobacco
Plant Breeding Innovations
- Wageningen University & Research Releases Booklet on New Plant Breeding Techniques
- CRISPR-Knockout of OsFAD2-1 Gene Improves Rice Bran Oil Health Benefits
- Japanese Researchers Establish New Cas9 Variant
- Early Leaf Senecence and Salt Stress Response Gene Found in Rice
Beyond Crop Biotech
- The Effect of Single Metal Nanoparticles on Transformation Efficiency of Soybean
- FDA Approves Application for AquaBounty Salmon Facility in Indiana, USA
- World Biotechnology Conference
Subscribe to CBU: