A rice transcription factor OsbHLH1 is involved in cold stress response

A rice transcription factor OsbHLH1 is involved in cold stress response Cold stress adversely affects plant growth and crop production. Some plants express a series of cold-responsive genes during cold acclimation to reduce the damage of cold stress. Among them, transcription factors play important roles in enhancing plant cold tolerance. A bHLH-type gene OsbHLH1 was isolated from rice. The predicted OsbHLH1 protein has a putative nuclear-localization signal and a putative DNA binding-domain bHLH-ZIP. The genomic sequence of the OsbHLH1 gene is unique in rice genome and has four introns. The transcription of the OsbHLH1 gene was specifically induced in roots of rice seedlings by cold but not by NaCl, PEG and ABA treatments. The OsbHLH1 protein was located in the nucleus of plant cells and had the ability to activate the transcription of the reporter gene in yeast. In addition, OsbHLH1 had the ability to dimerize. These results indicate that the OsbHLH1 may function as a transcription factor in a cold signal-transduction pathway. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png TAG Theoretical and Applied Genetics Springer Journals

A rice transcription factor OsbHLH1 is involved in cold stress response

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Publisher
Springer Journals
Copyright
Copyright © 2003 by Springer-Verlag
Subject
LifeSciences
ISSN
0040-5752
eISSN
1432-2242
D.O.I.
10.1007/s00122-003-1378-x
Publisher site
See Article on Publisher Site

Abstract

Cold stress adversely affects plant growth and crop production. Some plants express a series of cold-responsive genes during cold acclimation to reduce the damage of cold stress. Among them, transcription factors play important roles in enhancing plant cold tolerance. A bHLH-type gene OsbHLH1 was isolated from rice. The predicted OsbHLH1 protein has a putative nuclear-localization signal and a putative DNA binding-domain bHLH-ZIP. The genomic sequence of the OsbHLH1 gene is unique in rice genome and has four introns. The transcription of the OsbHLH1 gene was specifically induced in roots of rice seedlings by cold but not by NaCl, PEG and ABA treatments. The OsbHLH1 protein was located in the nucleus of plant cells and had the ability to activate the transcription of the reporter gene in yeast. In addition, OsbHLH1 had the ability to dimerize. These results indicate that the OsbHLH1 may function as a transcription factor in a cold signal-transduction pathway.

Journal

TAG Theoretical and Applied GeneticsSpringer Journals

Published: Nov 1, 2003

References

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