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Cryptic bracts exposed: insights into the regulation of leaf expansion
David A Baum1, Christopher D Day
1Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, WI 53706, USA.
Abstract:
Arabidopsis is unusual in producing flowers that are not subtended by specialized leaves, called floral bracts. Writing in Development, Dinneny et al. and Ohno et al. show that gain-of-function mutations of the JAGGED transcription factor produce bracts, and provide evidence that this gene plays a key role in a developmental program that regulates the size and shape of all leaves and leaf-homologs.
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