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Curr Opin Plant Biol. 2000 Feb;3(1):17-22.

The YABBY gene family and abaxial cell fate.

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Section of Plant Biology, University of California Davis, Davis, 95616, CA, USA.


The establishment of abaxial-adaxial polarity in lateral organs involves factors intrinsic to the primordia and interactions with the apical meristem from which they are derived. Recently, a small plant-specific family of genes, the YABBY gene family, has been proposed to specify abaxial cell fate. Each asymmetric above-ground lateral organ expresses at least one member of the family in a polar manner, and loss- and gain-of-function studies indicate that they are sufficient to specify abaxial cell fate and that they act in both distinct and redundant manners.

[Indexed for MEDLINE]

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