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Abstract Detail

Plant Resilience to Climate Challenges

Cutler, Sean [1].

Chemical Control of Plant Water Consumption.

Rising temperatures and lessening water supplies are threatening agricultural productivity and have motivated efforts to improve plant water use and drought tolerance. During water deficit, plants produce elevated levels of abscisic acid (ABA), which improves water consumption and stress tolerance by controlling guard cell aperture and other protective responses. My laboratory is interested in understanding the molecular mechanisms of ABA perception and utilizing this knowledge to design both new small molecule agonists and genetic constructs that can be used to manipulate crop water use and drought tolerance. For example, we have developed a potent ABA receptor agonist called quinabactin [1] that can be used to control water consumption in Soybean and other crop species. As a complementary strategy we have recently explored orthogonal ABA receptors that we engineered to respond to an existing agrochemical [2]. This latter strategy enables chemical control of water consumption using a molecule in current agricultural use, this bypassing the need for new chemistry. We anticipate that this strategy can be applied to other plant receptors and opens new doors for crop improvement. 1. Okamoto, M., Peterson, F. C., Defries, A., Park, S.-Y., Endo, A., Nambara, E., Volkman, B. F., and Cutler, S. R. “Activation of Dimeric ABA Receptors Elicits Guard Cell Closure, ABA-Regulated Gene Expression, and Drought Tolerance” Proceedings of the National Academy of Sciences of the United States of America 110, no. 29 (2013): 12132–12137. 2. Park, S.-Y., Peterson, F. C., Mosquna, A., Yao, J., Volkman, B. F., and Cutler, S. R. “Agrochemical Control of Plant Water Use Using Engineered Abscisic Acid Receptors” Nature 520: (2015): 545-548

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1 - University of California, Riverside, Institute for Integrative Genomce Biology and Department of Botany and Plant Sciences, Riverside, CA, 92521, USA

none specified

Presentation Type: Symposium Presentation
Session: SY18
Location: Hall A/The Shaw Conference Centre
Date: Wednesday, July 29th, 2015
Time: 4:45 PM
Number: SY18008
Abstract ID:1848
Candidate for Awards:None

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