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The SUR2 gene of Arabidopsis thaliana encodes the cytochrome P450 CYP83B1, a modulator of auxin homeostasis.
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2000 (English)In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 97, no 26Article in journal (Refereed) Published
Abstract [en]

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

Place, publisher, year, edition, pages
2000. Vol. 97, no 26
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Natural Sciences
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URN: urn:nbn:se:umu:diva-114166DOI: 10.1073/pnas.260502697PubMedID: 11114200OAI: oai:DiVA.org:umu-114166DiVA: diva2:914296
Available from: 2016-03-23 Created: 2016-01-15 Last updated: 2016-03-23

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Bellini, C
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