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          Institute: MPI für Entwicklungsbiologie     Collection: Abteilung 5 - Cell Biology (G. Jürgens)     Display Documents



ID: 708891.0, MPI für Entwicklungsbiologie / Abteilung 5 - Cell Biology (G. Jürgens)
Transcriptional repression of BODENLOS by HD-ZIP transcription factor HB5 in Arabidopsis thaliana
Authors:De Smet, I.; Lau, S.; Ehrismann, J. S.; Axiotis, I.; Kolb, M.; Kientz, M.; Weijers, D.; Jurgens, G.
Date of Publication (YYYY-MM-DD):2013-07
Journal Abbrev.:J Exp Bot
Volume:64
Issue / Number:10
Start Page:3009
End Page:3019
Audience:Not Specified
Abstract / Description:In Arabidopsis thaliana, the phytohormone auxin is an important patterning agent during embryogenesis and post-embryonic development, exerting effects through transcriptional regulation. The main determinants of the transcriptional auxin response machinery are AUXIN RESPONSE FACTOR (ARF) transcription factors and AUXIN/INDOLE-3-ACETIC ACID (AUX/IAA) inhibitors. Although members of these two protein families are major developmental regulators, the transcriptional regulation of the genes encoding them has not been well explored. For example, apart from auxin-linked regulatory inputs, factors regulating the expression of the AUX/IAA BODENLOS (BDL)/IAA12 are not known. Here, it was shown that the HOMEODOMAIN-LEUCINE ZIPPER (HD-ZIP) transcription factor HOMEOBOX PROTEIN 5 (HB5) negatively regulates BDL expression, which may contribute to the spatial control of BDL expression. As such, HB5 and probably other class I HD-ZIP proteins, appear to modulate BDL-dependent auxin response.
Free Keywords:Arabidopsis/chemistry/genetics/*metabolism; Arabidopsis Proteins/chemistry/*genetics/*metabolism; *Down-Regulation; *Gene Expression Regulation, Plant; Homeodomain Proteins/chemistry/genetics/*metabolism; Indoleacetic Acids/metabolism; Leucine Zippers; Plant Growth Regulators/metabolism; Repressor Proteins/*genetics/metabolism; Transcription Factors/chemistry/genetics/*metabolism
External Publication Status:published
Document Type:Article
Communicated by:edocabt5
Affiliations:MPI für Entwicklungsbiologie/Abteilung 5 - Zellbiologie (Gerd Jürgens)/
Identifiers:ISSN:1460-2431 (Electronic) 0022-0957 (Linking) %R 10.1093/jxb/ert137
URL:http://www.ncbi.nlm.nih.gov/pubmed/23682118
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