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

Identifieur interne : 000264 ( Main/Exploration ); précédent : 000263; suivant : 000265

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

Auteurs : Jun Zhang ; Jinshan Ella Lin ; Chinchu Harris ; Fernanda Campos Mastrotti Pereira [Brésil] ; Fan Wu ; Joshua J. Blakeslee ; Wendy Ann Peer

Source :

Proceedings of the National Academy of Sciences of the United States of America [ 0027-8424 ] ; 2016.

RBID : PMC:5047167

Abstract

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.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5047167

DOI: 10.1073/pnas.1604769113
PubMed: 27651492
PubMed Central: 5047167

Affiliations:

Brésil

Le document en format XML

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<author><name sortKey="Zhang, Jun" sort="Zhang, Jun" uniqKey="Zhang J" first="Jun" last="Zhang">Jun Zhang</name>
<affiliation><nlm:aff id="aff1">Department of Plant Science and Landscape Architecture,<institution>University of Maryland</institution>
, College Park,<addr-line>MD</addr-line>
 20742;</nlm:aff>
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<author><name sortKey="Lin, Jinshan Ella" sort="Lin, Jinshan Ella" uniqKey="Lin J" first="Jinshan Ella" last="Lin">Jinshan Ella Lin</name>
<affiliation><nlm:aff id="aff2">Department of Horticulture and Crop Science, Ohio Agricultural Research and Development Center,<institution>The Ohio State University</institution>
, Wooster,<addr-line>OH</addr-line>
 44691;</nlm:aff>
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<affiliation><nlm:aff id="aff3">Ohio Agricultural Research and Development Center Metabolite Analysis Cluster, Ohio Agricultural Research and Development Center,<institution>The Ohio State University</institution>
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 44691;</nlm:aff>
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<author><name sortKey="Harris, Chinchu" sort="Harris, Chinchu" uniqKey="Harris C" first="Chinchu" last="Harris">Chinchu Harris</name>
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 20742;</nlm:aff>
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<author><name sortKey="Campos Mastrotti Pereira, Fernanda" sort="Campos Mastrotti Pereira, Fernanda" uniqKey="Campos Mastrotti Pereira F" first="Fernanda" last="Campos Mastrotti Pereira">Fernanda Campos Mastrotti Pereira</name>
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 44691;</nlm:aff>
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, Wooster,<addr-line>OH</addr-line>
 44691;</nlm:aff>
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<affiliation><nlm:aff id="aff1">Department of Plant Science and Landscape Architecture,<institution>University of Maryland</institution>
, College Park,<addr-line>MD</addr-line>
 20742;</nlm:aff>
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, Wooster,<addr-line>OH</addr-line>
 44691;</nlm:aff>
</affiliation>
<affiliation><nlm:aff id="aff3">Ohio Agricultural Research and Development Center Metabolite Analysis Cluster, Ohio Agricultural Research and Development Center,<institution>The Ohio State University</institution>
, Wooster,<addr-line>OH</addr-line>
 44691;</nlm:aff>
</affiliation>
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<affiliation><nlm:aff id="aff1">Department of Plant Science and Landscape Architecture,<institution>University of Maryland</institution>
, College Park,<addr-line>MD</addr-line>
 20742;</nlm:aff>
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<affiliation><nlm:aff id="aff4">Department of Environmental Science and Technology,<institution>University of Maryland</institution>
, College Park,<addr-line>MD</addr-line>
 20742;</nlm:aff>
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, College Park,<addr-line>MD</addr-line>
 20742;</nlm:aff>
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, Wooster,<addr-line>OH</addr-line>
 44691;</nlm:aff>
</affiliation>
<affiliation><nlm:aff id="aff3">Ohio Agricultural Research and Development Center Metabolite Analysis Cluster, Ohio Agricultural Research and Development Center,<institution>The Ohio State University</institution>
, Wooster,<addr-line>OH</addr-line>
 44691;</nlm:aff>
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 20742;</nlm:aff>
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<affiliation><nlm:aff id="aff4">Department of Environmental Science and Technology,<institution>University of Maryland</institution>
, College Park,<addr-line>MD</addr-line>
 20742;</nlm:aff>
</affiliation>
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<front><div type="abstract" xml:lang="en"><title>Significance</title>
<p>Although auxin oxidation has long been known to be the primary mechanism of auxin catabolism and <italic>Arabidopsis</italic>
 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 <italic>Arabidopsis</italic>
 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 <italic>Arabidopsis</italic>
 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.</p>
</div>
</front>
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<name sortKey="Lin, Jinshan Ella" sort="Lin, Jinshan Ella" uniqKey="Lin J" first="Jinshan Ella" last="Lin">Jinshan Ella Lin</name>
<name sortKey="Peer, Wendy Ann" sort="Peer, Wendy Ann" uniqKey="Peer W" first="Wendy Ann" last="Peer">Wendy Ann Peer</name>
<name sortKey="Wu, Fan" sort="Wu, Fan" uniqKey="Wu F" first="Fan" last="Wu">Fan Wu</name>
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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

Source :

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

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