The<i>SUR2</i>gene of<i>Arabidopsis thaliana</i>encodes the cytochrome P450 CYP83B1, a modulator of auxin homeostasis

DOI Web Site 被引用文献13件
  • Isabelle Barlier
    Laboratoire de Biologie Cellulaire, Route de St. Cyr, F-78026 Versailles Cedex, France; Department of Forest Genetics and Plant Physiology, The Swedish University of Agricultural Science, S-901 83 Umeå, Sweden; and School of Biosciences, University Park, University of Nottingham, Nottingham NG7 2RD, United Kingdom
  • Mariusz Kowalczyk
    Laboratoire de Biologie Cellulaire, Route de St. Cyr, F-78026 Versailles Cedex, France; Department of Forest Genetics and Plant Physiology, The Swedish University of Agricultural Science, S-901 83 Umeå, Sweden; and School of Biosciences, University Park, University of Nottingham, Nottingham NG7 2RD, United Kingdom
  • Alan Marchant
    Laboratoire de Biologie Cellulaire, Route de St. Cyr, F-78026 Versailles Cedex, France; Department of Forest Genetics and Plant Physiology, The Swedish University of Agricultural Science, S-901 83 Umeå, Sweden; and School of Biosciences, University Park, University of Nottingham, Nottingham NG7 2RD, United Kingdom
  • Karin Ljung
    Laboratoire de Biologie Cellulaire, Route de St. Cyr, F-78026 Versailles Cedex, France; Department of Forest Genetics and Plant Physiology, The Swedish University of Agricultural Science, S-901 83 Umeå, Sweden; and School of Biosciences, University Park, University of Nottingham, Nottingham NG7 2RD, United Kingdom
  • Rishikesh Bhalerao
    Laboratoire de Biologie Cellulaire, Route de St. Cyr, F-78026 Versailles Cedex, France; Department of Forest Genetics and Plant Physiology, The Swedish University of Agricultural Science, S-901 83 Umeå, Sweden; and School of Biosciences, University Park, University of Nottingham, Nottingham NG7 2RD, United Kingdom
  • Malcolm Bennett
    Laboratoire de Biologie Cellulaire, Route de St. Cyr, F-78026 Versailles Cedex, France; Department of Forest Genetics and Plant Physiology, The Swedish University of Agricultural Science, S-901 83 Umeå, Sweden; and School of Biosciences, University Park, University of Nottingham, Nottingham NG7 2RD, United Kingdom
  • Goeran Sandberg
    Laboratoire de Biologie Cellulaire, Route de St. Cyr, F-78026 Versailles Cedex, France; Department of Forest Genetics and Plant Physiology, The Swedish University of Agricultural Science, S-901 83 Umeå, Sweden; and School of Biosciences, University Park, University of Nottingham, Nottingham NG7 2RD, United Kingdom
  • Catherine Bellini
    Laboratoire de Biologie Cellulaire, Route de St. Cyr, F-78026 Versailles Cedex, France; Department of Forest Genetics and Plant Physiology, The Swedish University of Agricultural Science, S-901 83 Umeå, Sweden; and School of Biosciences, University Park, University of Nottingham, Nottingham NG7 2RD, United Kingdom

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<jats:p>Genetic screens have been performed to identify mutants with altered auxin homeostasis in<jats:italic>Arabidopsis</jats:italic>. A tagged allele of the auxin-overproducing mutant<jats:italic>sur2</jats:italic>was identified within a transposon mutagenized population. The<jats:italic>SUR2</jats:italic>gene was cloned and shown to encode the CYP83B1 protein, which belongs to the large family of the P450-dependent monooxygenases.<jats:italic>SUR2</jats:italic>expression is up-regulated in<jats:italic>sur1</jats:italic>mutants and induced by exogenous auxin in the wild type. Analysis of indole-3-acetic acid (IAA) synthesis and metabolism in<jats:italic>sur2</jats:italic>plants indicates that the mutation causes a conditional increase in the pool size of IAA through up-regulation of IAA synthesis.</jats:p>

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