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AtMYB14 Regulates Cold Tolerance in Arabidopsis

AtMYB14 Regulates Cold Tolerance in Arabidopsis Low temperature affects plant growth and crop productivity. The CBF genes are a class of transcription factors that play important roles in cold response. Here we report that AtMYB14 participates in freezing tolerance in Arabidopsis by affecting expression of CBF genes. The AtMYB14 gene was down-regulated by cold treatment. AtMYB14 encodes a nuclear protein that functions as an R2R3-MYB transcription activator. Knock-down of AtMYB14 by artificial microRNA increased the tolerance to freezing stress. Both the CBF genes and the downstream genes were induced to a much higher level in AtMYB14 knock-down plants than in wild type under cold treatment. Our results suggest that AtMYB14 plays an important role in the plant response to cold stress. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Reporter Springer Journals

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References (41)

Publisher
Springer Journals
Copyright
Copyright © 2012 by The Author(s)
Subject
Life Sciences; Plant Sciences; Plant Breeding/Biotechnology; Proteomics; Metabolomics; Bioinformatics
ISSN
0735-9640
eISSN
1572-9818
DOI
10.1007/s11105-012-0481-z
Publisher site
See Article on Publisher Site

Abstract

Low temperature affects plant growth and crop productivity. The CBF genes are a class of transcription factors that play important roles in cold response. Here we report that AtMYB14 participates in freezing tolerance in Arabidopsis by affecting expression of CBF genes. The AtMYB14 gene was down-regulated by cold treatment. AtMYB14 encodes a nuclear protein that functions as an R2R3-MYB transcription activator. Knock-down of AtMYB14 by artificial microRNA increased the tolerance to freezing stress. Both the CBF genes and the downstream genes were induced to a much higher level in AtMYB14 knock-down plants than in wild type under cold treatment. Our results suggest that AtMYB14 plays an important role in the plant response to cold stress.

Journal

Plant Molecular Biology ReporterSpringer Journals

Published: Jun 22, 2012

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