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[Role of the transcription factors CBF in plant cold tolerance]
Ke-Ya Zhong1, Miao-Shui Ye, Xin-Wen Hu
1Chinese Academy of Tropical Agricultural Sciences, Institute of Tropical Bioscience and Biotechnology, State Key Laboratory of Tropical Crops Biotechnology, Haikou 571101, China, syjzky@163.com
Abstract:
In response to the low temperature, plants induce relevant gene expression to increase the cold tolerance. This response is called cold acclimation. The molecular mechanism for cold acclimation has been studied, suggesting that the CBF transcription activators are critical in the signal transduction of cold acclimation. The signal pathway could be summarized as: CBF transcription factors -->CRT/DRE motif domain -->the expression of COR gene--> plant cold tolerance. Understanding the mechanism of CBF in cold tolerance will provide a new strategy for improvement of plant cold tolerance and breeding of cold-tolerant plant.
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Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
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