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

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 hi...

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Bibliographic Details
Published in:	The EMBO journal Vol. 21; no. 19; pp. 5036 - 5046
Main Authors:	Schellmann, S., Schnittger, A., Kirik, V., Wada, T., Okada, K., Beermann, A., Thumfahrt, J., Jürgens, G., Hülskamp, M.
Format:	Journal Article
Language:	English
Published:	Chichester, UK John Wiley & Sons, Ltd 01-10-2002 Blackwell Publishing Ltd Oxford University Press
Subjects:	Arabidopsis - growth & development Arabidopsis - physiology Arabidopsis Proteins - metabolism Epidermis MYB pattern formation Plant Proteins - metabolism Plant Roots - physiology Proto-Oncogene Proteins c-myb - metabolism Rhizome - physiology root hairs trichomes TRIPTYCHON
Online Access:	Get full text
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Summary:	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.
Bibliography:	istex:076DD886D106F6A376277E082F566F9F4BA134FC ArticleID:EMBJ7594740 ark:/67375/WNG-LL5CNJBC-5 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	0261-4189 1460-2075
DOI:	10.1093/emboj/cdf524