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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Asymmetric leaf development and blade expansion in Arabidopsis are mediated by KANADI and YABBY activities.

Asymmetric development of plant lateral organs is initiated by a partitioning of organ primordia into distinct domains along their adaxial/abaxial axis. Two primary determinants of abaxial cell fate are members of the KANADI and YABBY gene families. Progressive loss of KANADI activity in loss-of-function mutants results in progressive transformation of abaxial cell types into adaxial ones and a correlated loss of lamina formation. Novel, localized planes of blade expansion occur in some kanadi loss-of- function genotypes and these ectopic lamina outgrowths are YABBY dependent. We propose that the initial asymmetric leaf development is regulated primarily by mutual antagonism between KANADI and PHB-like genes, which is translated into polar YABBY expression. Subsequently, polar YABBY expression contributes both to abaxial cell fate and to abaxial/adaxial juxtaposition-mediated lamina expansion.[1]

References

  1. Asymmetric leaf development and blade expansion in Arabidopsis are mediated by KANADI and YABBY activities. Eshed, Y., Izhaki, A., Baum, S.F., Floyd, S.K., Bowman, J.L. Development (2004) [Pubmed]
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