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          Institute: MPI für Entwicklungsbiologie     Collection: Abteilung 6 - Molecular Biology (D. Weigel)     Display Documents



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ID: 636059.0, MPI für Entwicklungsbiologie / Abteilung 6 - Molecular Biology (D. Weigel)
Genome-wide binding-site analysis of REVOLUTA reveals a link between leaf patterning and light-mediated growth responses
Authors:Brandt, R.; Salla-Martret, M.; Bou-Torrent, J.; Musielak, T.; Stahl, M.; Lanz, C.; Ott, F.; Schmid, M.; Greb, T.; Schwarz, M.; Choi, S. B.; Barton, M. K.; Reinhart, B. J.; Liu, T.; Quint, M.; Palauqui, J. C.; Martínez-Garcia, J. F.; Wenkel, S.
Date of Publication (YYYY-MM-DD):2012-10
Title of Journal:Plant J
Volume:72
Issue / Number:1
Start Page:31
End Page:42
Review Status:not specified
Audience:Not Specified
Abstract / Description:Unlike the situation in animals, the final morphology of the plant body is highly modulated by the environment. During Arabidopsis development, intrinsic factors provide the framework for basic patterning processes. CLASS III HOMEODOMAIN LEUCINE ZIPPER (HD-ZIPIII) transcription factors are involved in embryo, shoot and root patterning. During vegetative growth HD-ZIPIII proteins control several polarity set-up processes such as in leaves and the vascular system. We have identified several direct target genes of the HD-ZIPIII transcription factor REVOLUTA (REV) using a chromatin immunoprecipitation/DNA sequencing (ChIP-Seq) approach. This analysis revealed that REV acts upstream of auxin biosynthesis and affects directly the expression of several class II HD-ZIP transcription factors that have been shown to act in the shade-avoidance response pathway. We show that, as well as involvement in basic patterning, HD-ZIPIII transcription factors have a critical role in the control of the elongation growth that is induced when plants experience shade. Leaf polarity is established by the opposed actions of HD-ZIPIII and KANADI transcription factors. Finally, our study reveals that the module that consists of HD-ZIPIII/KANADI transcription factors controls shade growth antagonistically and that this antagonism is manifested in the opposed regulation of shared target genes.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Entwicklungsbiologie/Abteilung 6 - Molekulare Biologie (Detlef Weigel)
External Affiliations:%G eng
Identifiers:ISSN:1365-313X (Electronic) 0960-7412 (Linking) %R 10.1... [ID No:1]
URL:http://www.ncbi.nlm.nih.gov/pubmed/22578006 [ID No:2]
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