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Hormone signalling: ABA has a breakdown

Abscisic acid (ABA) dynamically balances plant water use and availability. It is synthesized during water deficit and quickly catabolized into breakdown products previously thought to be largely inactive. New work demonstrates that phaseic acid, a major ABA catabolite, is a weak ABA receptor agonist with its own auxiliary role in water relations.

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Author information

Affiliations

  1. Sean R. Cutler is in the Department of Botany and Plant Sciences and at the Center for Plant Cell Biology, University of California, Riverside, California 92521, USA.

    • Sean R. Cutler
  2. Jorge Lozano-Juste is in the Instituto de Biologia Molecular y Celular de Plantas, UPV-CSIC, Valencia 46022, Spain.

    • Jorge Lozano-Juste

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Corresponding author

Correspondence to Sean R. Cutler.