Drought Resistance Hormone Discovered in Plants

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Drought affects two-thirds of Sub-Saharan Africa and over 65% of its population (© Pexels)

Researchers at the RIKEN Centre of Sustainable Resource Science (CSRS) in Japan have discovered a hormone linked to the stimulation of drought-resistant characteristics in plants.

Published in the journal Nature earlier this month, the study shows how the peptide CLE25 is synthesised in the roots of plants when under stress due to a lack of water in the soil, resulting in the closing of pores (stomata) in the leaf surfaces.

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The Model Plant

Arabidopsis thaliana
Arabidopsis thaliana is a model organism for plant science research

Charis Cook works for GARNet, a BBSRC-sponsored network that supports plant scientists in the UK by, among other things, linking researchers to each other and to the research councils, and providing an information hub for plant scientists. GARNet also has its own blog. Before working for GARNet, Charis was at Royal Holloway, University of London, as a post-grad student and then a post-doctoral researcher.

Arabidopsis thaliana, an unassuming Brassicaceae species with a short life cycle and tiny white flowers, was the subject of nearly 4000 peer-reviewed journal articles in 2011. A. thaliana is also the starting point of much of the research featured on the Plantwise blog, as plant molecular biology depends heavily on resources built on research on this small plant. Continue reading