Chinchu Harris

Fan Wu

Fernanda Campos Mastrotti Pereira

Jinshan Ella Lin

Joshua J. Blakeslee

Jun Zhang

Wendy Ann Peer

Significance
          
            Although auxin oxidation has long been known to be the primary mechanism of auxin catabolism and
            Arabidopsis
            seedlings have 10–100 more 2-oxindole 3-acetic acid compared with other auxin catabolic products, the enzymes that constitutively catalyze this process remained unknown. This work fills the gap by identifying and characterizing the
            Arabidopsis
            proteins DIOXYGENASE FOR AUXIN OXIDATION 1 (DAO1) and DAO2, which catalyze auxin oxidation under normal growth conditions and shows that this activity has a physiological function in planta. The protein localization and phenotypes of the loss/gain of function mutants support that DAO1 is the primary constitutive mechanism of auxin catabolism in
            Arabidopsis
            and that the temporal- and tissue-specific oxidative inactivation of auxin by DAO adjusts indole-3-acetic acid levels throughout the life of the plant to optimize growth and development.
          </jats:p

Crossref

Proceedings of the National Academy of Sciences

DAO1 catalyzes temporal and tissue-specific oxidative inactivation of auxin in
            <i>Arabidopsis thaliana</i>

DAO1 catalyzes temporal and tissue-specific oxidative inactivation of auxin in
                    Arabidopsis thaliana

DAO1 catalyzes temporal and tissue-specific oxidative inactivation of auxin in Arabidopsis thaliana

Abstract

Similar works

Full text

Available Versions

Crossref