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New VARI findings next step to growing drought-resistant plants
Date:9/28/2010

Grand Rapids, Mich. (September 28, 2010) New findings from Van Andel Research Institute (VARI) scientists could lead to environmentally-friendly sprays that help plants survive drought and other stresses in harsh environments to combat global food shortages. The study is a follow-up to findings published in Nature last year that were named among the top breakthroughs of 2009 by Science magazine.

"I think that the work established the methodologies and feasibilities of finding cheap and environmentally benign chemicals for agricultural application to improve the water use efficiency and drought tolerance of crops," said Jian-Kang Zhu, Professor of Botany and Presidential Chair of Botany & Plant Sciences at the University of California, Riverside. "The work also provides a better understanding of ABA receptor function, which will help efforts in the genetic engineering of hardier crops."

In a 2009 study published in Nature, VARI scientists determined precisely how the plant hormone abscisic acid (ABA) works at the molecular level to help plants respond to environmental stresses such as drought and cold. These findings could help engineer crops that thrive in harsh environments.

One of ABA's effects is to cause plant pores to close when plants are stressed so that they can retain water. In the new study, researchers identified several synthetic compounds that fit well with ABA's many receptors, or cellular "docking stations," to have the same effect. By finding compounds that can close these pores, researchers' findings could lead to sprays that use a plant's natural defenses to help it survive harsh environmental conditions.

"Sprays would allow plants to be much more adaptable than if we genetically engineered them," said Karsten Melcher, Ph.D., one of the lead authors of the study and research scientist in the VARI Laboratory of Structural Biology led by Distinguished Scientific Investigator H. Eri
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Contact: Tim Hawkins
tim.hawkins@vai.org
Van Andel Research Institute
Source:Eurekalert

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