A genetic framework for floral patterning

François Parcy, Ove Nilsson, Maximilian A. Busch, Ilha Lee and Detlef Weigel ()
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François Parcy: The Salk Institute for Biological Studies
Ove Nilsson: The Salk Institute for Biological Studies
Maximilian A. Busch: The Salk Institute for Biological Studies
Ilha Lee: The Salk Institute for Biological Studies
Detlef Weigel: The Salk Institute for Biological Studies

Nature, 1998, vol. 395, issue 6702, 561-566

Abstract: Abstract The initial steps of flower development involve two classes of consecutively acting regulatory genes. Meristem-identity genes, which act early to control the initiation of flowers, are expressed throughout the incipient floral primordium. Homeotic genes, which act later to specify the identity of individual floral organs, are expressed in distinct domains within the flower. The link between the two classes of genes has remained unknown so far. Here we show that the meristem-identity gene LEAFY has a role in controlling homeotic genes that is separable from its role in specifying floral fate. On the basis of our observation that LEAFY activates different homeotic genes through distinct mechanisms, we propose a genetic framework for the control of floral patterning.

Date: 1998
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DOI: 10.1038/26903

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