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Trends Plant Sci. 2001 Sep;6(9):420-5.

Roles and activities of Aux/IAA proteins in Arabidopsis.

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Dept Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3280, USA.


Auxin induces various distinct developmental responses, partly by regulating gene expression. The Aux/IAA genes are a large gene family, many of which are induced by auxin. Work on Arabidopsis Aux/IAA genes has begun to reveal that they can regulate development and auxin-induced gene expression. Furthermore, auxin responses require Aux/IAA protein turnover. Finally, recent evidence suggests that Aux/IAA proteins can mediate light responses. Work in the near future should test whether Aux/IAA proteins are antennae that connect auxin and light signals to endogenous developmental responses.

[Indexed for MEDLINE]

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