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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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Figure 1: ABA catabolism.


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Correspondence to Sean R. Cutler.

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Lozano-Juste, J., Cutler, S. Hormone signalling: ABA has a breakdown. Nature Plants 2, 16137 (2016).

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