In vitro reconstitution of an abscisic acid signalling pathway

Hiroaki Fujii, Viswanathan Chinnusamy, Americo Rodrigues, Silvia Rubio, Regina Antoni, Sang-Youl Park, Sean R. Cutler, Jen Sheen, Pedro L. Rodriguez and Jian-Kang Zhu ()
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Hiroaki Fujii: University of California at Riverside, Riverside, California 92521, USA
Viswanathan Chinnusamy: University of California at Riverside, Riverside, California 92521, USA
Americo Rodrigues: Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-UPV, ES-46022 Valencia, Spain
Silvia Rubio: Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-UPV, ES-46022 Valencia, Spain
Regina Antoni: Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-UPV, ES-46022 Valencia, Spain
Sang-Youl Park: University of California at Riverside, Riverside, California 92521, USA
Sean R. Cutler: University of California at Riverside, Riverside, California 92521, USA
Jen Sheen: Massachusetts General Hospital, Boston, Massachusetts 02114, USA
Pedro L. Rodriguez: Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-UPV, ES-46022 Valencia, Spain
Jian-Kang Zhu: University of California at Riverside, Riverside, California 92521, USA

Nature, 2009, vol. 462, issue 7273, 660-664

Abstract: Abscisic acid signalling reconstituted in vitro The phytohormone abscisic acid (ABA) plays an important role in several physiological responses such as stomatal conductance and seed dormancy and also in protecting plants against stress conditions such as drought and cold. Recently a family of proteins known as PYR/PYL/RCAR were identified as ABA receptors, but details of the signalling pathway downstream of ABA binding remained unclear. In this paper, Zhu and colleagues reconstitute the ABA-mediated signalling in vitro and test key observations in vivo. This is the first reported reconstitution of a plant hormone signalling pathway.

Date: 2009
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DOI: 10.1038/nature08599

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