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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2009.09.003
|2 doi
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|a pubmed25n0639.xml
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|a (DE-627)NLM191628484
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|a (NLM)19783066
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Arce, Débora Pamela
|e verfasserin
|4 aut
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|a The analysis of an Arabidopsis triple knock-down mutant reveals functions for MBF1 genes under oxidative stress conditions
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|c 2010
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 27.04.2010
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|a Date Revised 10.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Published by Elsevier GmbH.
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|a Transcriptional co-activators of the multiprotein bridging factor 1 (MBF1) type belong to a small multigenic family that controls gene expression by connecting transcription factors and the basal transcription machinery. In this report, a triple knock-down mutant (abc-) for the Arabidopsis thaliana MBF1 genes AtMBF1a, AtMBF1b and AtMBF1c was generated. The phenotypic characterization using oxidative agents such as hydrogen peroxide and methyl viologen revealed that the abc- mutant was more sensitive to oxidative stress. The triple knock-down mutant, abc- was also sensitive to osmotic stress mediated by high concentrations of sorbitol. Furthermore, the abc- phenotype was partially or completely rescued by AtMBF1c cDNA over-expression (abc- +c) depending on physiological and developmental conditions. AtMBF1s regulate the expression of ABR1, which is a member of the ethylene-response factor family and acts as ABA repressor. Thus, we conclude that AtMBF1 gene family may function as a regulatory component of the cross-talk node between ethylene, ABA and stress signal pathways. Furthermore, higher levels of a HSP70 mRNA and an immunoreactive HSP70 protein were detected in the abc- mutant. The participation of MBF1c as a possible negative regulator of HSP genes was discussed
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Arabidopsis Proteins
|2 NLM
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|a Heat-Shock Proteins
|2 NLM
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|a MBF1 protein, Arabidopsis
|2 NLM
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|a RNA, Plant
|2 NLM
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|a Trans-Activators
|2 NLM
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|a Water
|2 NLM
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| 650 |
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|a 059QF0KO0R
|2 NLM
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| 700 |
1 |
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|a Godoy, Andrea Verónica
|e verfasserin
|4 aut
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1 |
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|a Tsuda, Kenichi
|e verfasserin
|4 aut
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| 700 |
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|a Yamazaki, Ken-Ichi
|e verfasserin
|4 aut
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| 700 |
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|a Valle, Estela Marta
|e verfasserin
|4 aut
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| 700 |
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|a Iglesias, María José
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Di Mauro, María Florencia
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Casalongué, Claudia Anahí
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 167(2010), 3 vom: 15. Feb., Seite 194-200
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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| 773 |
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|g volume:167
|g year:2010
|g number:3
|g day:15
|g month:02
|g pages:194-200
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|u http://dx.doi.org/10.1016/j.jplph.2009.09.003
|3 Volltext
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|d 167
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|h 194-200
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