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Radial patterning of Arabidopsis shoots by class III HD-ZIP and KANADI genes.
John F Emery
1 ,
Sandra K Floyd ,
John Alvarez ,
Yuval Eshed ,
Nathaniel P Hawker ,
Anat Izhaki ,
Stuart F Baum ,
John L Bowman
Oct 14 2003
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Abstract
Shoots of all land plants have a radial pattern that can be considered to have an adaxial (central)-abaxial (peripheral) polarity. In Arabidopsis, gain-of-function alleles of PHAVOLUTA and PHABULOSA, members of the class III HD-ZIP gene family, result in adaxialization of lateral organs. Conversely, loss-of-function alleles of the KANADI genes cause an adaxialization of lateral organs. Thus, the class III HD-ZIP and KANADI genes comprise a genetic system that patterns abaxial-adaxial polarity in lateral organs produced from the apical meristem.