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TRIPTYCHON and CAPRICE mediate lateral inhibition during trichome and root hair patterning in Arabidopsis

TRIPTYCHON and CAPRICE mediate lateral inhibition during trichome and root hair patterning in... Trichome patterning in Arabidopsis is a model for the generation of a spacing pattern from initially equivalent cells. We show that the TRIPTYCHON gene that functions in lateral inhibition encodes a single‐repeat MYB‐related transcription factor that lacks a recognizable activation domain. It has high sequence simi larity to the root hair patterning gene CAPRICE. Both genes are expressed in trichomes and act together during lateral inhibition. We further show that TRIPTYCHON and CAPRICE act redundantly in the position‐dependent cell fate determination in the root epidermis. Thus, the same lateral inhibition mechanism seems to be involved in both de novo patterning and position‐dependent cell determination. We propose a model explaining trichome and root hair patterning by a common mechanism. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The EMBO Journal Wiley

TRIPTYCHON and CAPRICE mediate lateral inhibition during trichome and root hair patterning in Arabidopsis

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References (42)

Publisher
Wiley
Copyright
Copyright © 2013 Wiley Periodicals, Inc
ISSN
0261-4189
eISSN
1460-2075
DOI
10.1093/emboj/cdf524
Publisher site
See Article on Publisher Site

Abstract

Trichome patterning in Arabidopsis is a model for the generation of a spacing pattern from initially equivalent cells. We show that the TRIPTYCHON gene that functions in lateral inhibition encodes a single‐repeat MYB‐related transcription factor that lacks a recognizable activation domain. It has high sequence simi larity to the root hair patterning gene CAPRICE. Both genes are expressed in trichomes and act together during lateral inhibition. We further show that TRIPTYCHON and CAPRICE act redundantly in the position‐dependent cell fate determination in the root epidermis. Thus, the same lateral inhibition mechanism seems to be involved in both de novo patterning and position‐dependent cell determination. We propose a model explaining trichome and root hair patterning by a common mechanism.

Journal

The EMBO JournalWiley

Published: Jan 1, 2002

Keywords: ; ; ; ;

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