Isolation and characterization of class A4 heat shock transcription factor from alfalfa

Copyright © 2006 Elsevier Ireland Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant science : an international journal of experimental plant biology. - 1985. - 171(2006), 3 vom: 01. Sept., Seite 332-44
1. Verfasser: Friedberg, Jeremy N (VerfasserIn)
Weitere Verfasser: Bowley, Stephen R, McKersie, Bryan D, Gurley, William B, Czarnecka-Verner, Eva
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2006
Zugriff auf das übergeordnete Werk:Plant science : an international journal of experimental plant biology
Schlagworte:Journal Article
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245 1 0 |a Isolation and characterization of class A4 heat shock transcription factor from alfalfa 
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520 |a Plant heat shock transcription factors (HSFs) regulate transcription of heat shock (HS) genes. In Arabidopsis thaliana, 21 HSFs have been classified into groups A-C. Members of class A act as typical transcriptional activators, whereas B HSFs function as coactivators or repressors depending on promoter context. The function of class C HSFs is still unclear. Here, we present the isolation and characterization of the first HSF from alfalfa (Medicago sativa L.) and designate it MsHSFA4 based on amino acid sequence analysis. The MsHSFA4 gene was determined to be single copy and was detected at two separate genetic loci in the tetraploid Medicago sativa. Overexpression of MsHSFA4 in tobacco mesophyll protoplasts resulted in weak transcriptional activity, similar to that exhibited by Arabidopsis AtHSFA4a. The MsHSFA4 proximal promoter contains three putative HSE elements, and the gene itself is activated both by heat and cold stress 
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700 1 |a Bowley, Stephen R  |e verfasserin  |4 aut 
700 1 |a McKersie, Bryan D  |e verfasserin  |4 aut 
700 1 |a Gurley, William B  |e verfasserin  |4 aut 
700 1 |a Czarnecka-Verner, Eva  |e verfasserin  |4 aut 
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