Transcriptional repression of BODENLOS by HD-ZIP transcription factor HB5 in Arabidopsis thaliana.

I. De Smet; S. Lau; J.S. Ehrismann; I. Axiotis; M. Kolb; M. Kientz; D. Weijers; G. Jürgens

doi:10.1093/jxb/ert137

Transcriptional repression of BODENLOS by HD-ZIP transcription factor HB5 in Arabidopsis thaliana.

I. De Smet, S. Lau, J.S. Ehrismann, I. Axiotis, M. Kolb, M. Kientz, D. Weijers, G. Jürgens

Biochemistry

Research output: Contribution to journal › Article › Academic › peer-review

37 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	3009-3019
Journal	Journal of Experimental Botany
Volume	64
Issue number	10
DOIs	https://doi.org/10.1093/jxb/ert137
Publication status	Published - 2013

Keywords

regulated gene-expression
of-function mutation
plant development
auxin response
homeobox gene
class-i
shade avoidance
root initiation
homeodomain
protein

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10.1093/jxb/ert137

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title = "Transcriptional repression of BODENLOS by HD-ZIP transcription factor HB5 in Arabidopsis thaliana.",

abstract = "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.",

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year = "2013",

doi = "10.1093/jxb/ert137",

language = "English",

volume = "64",

pages = "3009--3019",

journal = "Journal of Experimental Botany",

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T1 - Transcriptional repression of BODENLOS by HD-ZIP transcription factor HB5 in Arabidopsis thaliana.

AU - De Smet, I.

AU - Lau, S.

AU - Ehrismann, J.S.

AU - Axiotis, I.

AU - Kolb, M.

AU - Kientz, M.

AU - Weijers, D.

AU - Jürgens, G.

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

KW - regulated gene-expression

KW - of-function mutation

KW - plant development

KW - auxin response

KW - homeobox gene

KW - class-i

KW - shade avoidance

KW - root initiation

KW - homeodomain

KW - protein

U2 - 10.1093/jxb/ert137

DO - 10.1093/jxb/ert137

M3 - Article

SN - 0022-0957

VL - 64

SP - 3009

EP - 3019

JO - Journal of Experimental Botany

JF - Journal of Experimental Botany

IS - 10

ER -

Transcriptional repression of BODENLOS by HD-ZIP transcription factor HB5 in Arabidopsis thaliana.

Abstract

Keywords

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