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Article

High humidity induces abscisic acid 8'-hydroxylase in stomata and vasculature to regulate local and systemic abscisic acid responses in Arabidopsis.

Plant physiology - 1 Feb 2009

Okamoto Masanori, Tanaka Yoko, Abrams Suzanne R, Kamiya Yuji, Seki Motoaki, Nambara Eiji

Abstract excerpt

Levels of endogenous abscisic acid (ABA) are changed dynamically in response to environmental conditions. The ABA 8'-hydroxylase is a key enzyme in ABA catabolism and is encoded by CYP707A genes. In this study, we examined physiological roles of Arabidopsis (Arabidopsis thaliana) CYP707As in the plant's response to changes in humidity. The cyp707a1 and cyp707a3 mutants displayed lower stomatal conductance under...

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Identifiers

PMID: 19036833
DOI: 10.1104/pp.108.130823
PMCID: PMC2633821

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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