QUICK SEARCH:   [advanced] Author: Keyword(s):
Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents

First published online May 28, 2004

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Related articles in Development Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Search for Related Content Social Bookmarking                         What's this?

Fig leaf or blade of grass?

In plants, recruitment of leaf founder cells from the shoot apical meristem (SAM) coincides with development and differentiation along the three axes - mediolateral, proximodistal and dorsoventral - of the leaf primordium. How these axes form remains unclear but on p. 2827 Nardmann et al. report that a homeobox gene function, which is conserved between monocots and dicots, initiates meristematic cells to become founder cells in a specific lateral domain of the SAM. The researchers identify this homeobox gene function in the monocot maize, where it is encoded by narrow sheath1 and narrow sheath2 (ns1 and ns2), through the homology of these genes to PRESSED FLOWER (PRS), a homeobox gene involved in flower development in Arabidopsis, a dicot plant. Their observation that Arabidopsis leaves lacking PRS function have a previously unreported subtle abnormality contrasts with the obvious narrow sheath phenotype of maize mutants, and these divergent roles provide new insights into the evolution of leaf morphology

CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?

Related articles in Development:

The maize duplicate genes narrow sheath1 and narrow sheath2 encode a conserved homeobox gene function in a lateral domain of shoot apical meristems

Judith Nardmann, Jiabing Ji, Wolfgang Werr, and Michael J. Scanlon
Development 2004 131: 2827-2839. [Abstract] [Full Text]  

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Related articles in Development Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Search for Related Content Social Bookmarking                         What's this?