The Maize Rough Sheath2 Gene and Leaf Development Programs in Monocot and Dicot Plants

Overview

Journal Science

Specialty Science

Date 1999 Apr 2

PMID 10102817

Citations 104

Authors

M Tsiantis

R Schneeberger

J F Golz

M Freeling

J A Langdale

Affiliations

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Abstract

Leaves of higher plants develop in a sequential manner from the shoot apical meristem. Previously it was determined that perturbed leaf development in maize rough sheath2 (rs2) mutant plants results from ectopic expression of knotted1-like (knox) homeobox genes. Here, the rs2 gene sequence was found to be similar to the Antirrhinum PHANTASTICA (PHAN) gene sequence, which encodes a Myb-like transcription factor. RS2 and PHAN are both required to prevent the accumulation of knox gene products in maize and Antirrhinum leaves, respectively. However, rs2 and phan mutant phenotypes differ, highlighting fundamental differences in monocot and dicot leaf development programs.

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