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| Web URL(s): | http://www.plantphysiol.org/cgi/content/full/130/2/639
Last checked: 5/2004
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Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Haake, Volker;
Cook, Daniel;
Riechmann, José Luis;
Pineda, Omaira;
Thomashow, Michael;
Zhang, James Z. |
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| Author Affiliation: | Haake, Riechmann, Pineda, Zhang: Mendel Biotechnology, Hayward, California; Cook and Thomashow: Department of Energy Plant Reseach Lab, Michigan State University; and Thomashow: Department of Crop and Soil Sciences, Michigan State University, East Lansing, Michigan |
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| Title: | Transcription factor CBF4 is a regulator of drought adaptation in Arabidopsis |
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| Source: | Plant Physiology. Vol. 130, October 2002, p. 639-648. |
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| Publishing Information: | Rockville, MD: American Society of Plant Physiologists |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Temperatures; Genes; Cold acclimation; Adaptation; Drought resistance
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| Abstract/Contents: | "In plants, low temperature and dehydration activate a set of genes containing C-repeat/dehydration-responsive elements in their promoter. It has been shown previously that the Arabidopsis CBF/DREB1 transcription activators are critical regulators of gene expression in the signal transduction of cold acclimation. Here, we report the isolation of an apparent homolog of the CBF/DREB1 proteins (CBF4) that plays the equivalent role during drought adaptation. In contrast to the three already identified CBF/DREB1 homologs, which are induced under cold stress, CBF4 gene expression is up-regulated by drought stress, but not by low temperature. Overexpression of CBF4 in transgenic Arabidopsis plants results in the activation of C-repeat/dehydration-responsive element containing downstream genes that are involved in cold acclimation and drought adaptation. As a result, the transgenic plants are more tolerant to freezing and drought stress. Because of the physiological similarity between freezing and drought stress, and the sequence and structural similarity of the CBF/DREB1 and the CBF4 proteins, we propose that the plant's response to cold and drought evolved from a common CBF-like transcription factor, first through gene duplication and then through promoter evolution." |
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| Language: | English |
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| References: | 49 |
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| See Also: | Other items relating to: Disasters - Drought |
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| Note: | Pictures, b/w
Tables
Figures
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Haake, V., D. Cook, J. L. Riechmann, O. Pineda, M. Thomashow, and J. Z Zhang. 2002. Transcription factor CBF4 is a regulator of drought adaptation in Arabidopsis. Plant Physiol. 130:p. 639-648. |
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| Web URL(s):
http://www.plantphysiol.org/cgi/content/full/130/2/639
Last checked: 5/2004
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: QK 1 .P68 |
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