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An alternative, zeaxanthin epoxidase-independent abscisic acid biosynthetic pathway in plants.

Molecular plant - 3 Jan 2022

Jia Kun-Peng, Mi Jianing, Ali Shawkat, Ohyanagi Hajime, Moreno Juan C, Ablazov Abdugaffor, Balakrishna Aparna, Berqdar Lamis, Fiore Alessia, Diretto Gianfranco, Martínez Claudio, de Lera Angel R, Gojobori Takashi, Al-Babili Salim

Abstract excerpt

Abscisic acid (ABA) is an important carotenoid-derived phytohormone that plays essential roles in plant response to biotic and abiotic stresses as well as in various physiological and developmental processes. In Arabidopsis, ABA biosynthesis starts with the epoxidation of zeaxanthin by the ABA DEFICIENT 1 (ABA1) enzyme, leading to epoxycarotenoids; e.g., violaxanthin. The oxidative cleavage of...

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PMID: 34547513
DOI: 10.1016/j.molp.2021.09.008

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