02 Jul 2013:
Drought Tolerance in Plants
Boosted by New Synthetic Chemical
Scientists have identified a chemical that helps plants better tolerate drought conditions
, a discovery
Click to enlarge
Cutler Lab/UC Riverside
Soybean plant, right, treated with quinabactin
they say could help boost crop production as extreme weather conditions become more common. After testing thousands of different molecules, researchers at the University of California, Riverside found and named a chemical, quinabactin, that caused the pores, or stomata, in Arabidopsis plants to close firmly, thus preventing water loss. The action is similar to the way a naturally occurring stress hormone, known as abscisic acid (ABA), performs in drought-tolerant plant varieties. While it was previously known that ABA triggers the closing of stomata pores during dry periods, the hormone is far too expensive to apply in agricultural fields, scientists say. Writing in the Proceedings of the National Academy of Sciences
, the researchers report that the synthetic chemical mimics the effects of ABA but is much simpler chemically and easier and cheaper to produce. “If you can control the receptors the way ABA does, then you have a way to control water loss and drought-tolerance,” said Sean Cutler, a plant cell biologist and lead author of the study.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
e360 on Facebook
Donate to e360
View mobile site
Subscribe to our newsletter
Subscribe to our feed:
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.
is now available for mobile devices at e360.yale.edu/mobile
The Warriors of Qiugang
, a Yale Environment 360
video, chronicles a Chinese village’s fight against a polluting chemical plant. It was nominated for a 2011 Academy Award for Best Documentary Short.
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
, winner of the Yale Environment 360 Video Contest, documents the work of African researchers monitoring wildlife in Uganda's remote Bwindi Impenetrable National Park. Watch the video.