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Over-expression of ThpI from Choristoneura fumiferana enhances tolerance to cold in Arabidopsis

文献类型： 外文期刊

作者： Zhu, Bo 1 ; Xiong, Ai-Sheng 1 ; Peng, Ri-He 1 ; Xu, Jing 3 ; Jin, Xiao-Fen 1 ; Meng, Xiu-Rong 4 ; Yao, Quan-Hong 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Biotechnol Res Inst, Agrobiotechnol Res Ctr, Shanghai 201106, Peoples R China

2.Shanghai Jiao Tong Univ, Coll Agr & Biol, Shanghai 200240, Peoples R China

3.Nanjing Agr Univ, Coll Hort, Nanjing 210095, Peoples R China

4.Yangzhou Univ, Coll Biosci & Biotechnol, Yangzhou 225009, Peoples R China

关键词： plant growth;cold tolerance;electrolyte leakage activity

期刊名称：MOLECULAR BIOLOGY REPORTS （ 影响因子：2.316； 五年影响因子：2.357 ）

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收录情况： SCI

摘要： Thermal hysteresis proteins (Thps) known as antifreeze proteins for their antifreeze activity, depress the freezing point of water below the melting point in many polar marine fishes, terrestrial arthropods and plants. For the purpose of breeding cold-resistant plants, we designed to introduce the Thp gene into the plants. The physiological and biochemical effect of high-lever expression of the modified Choristoneura fumiferana Thp (ThpI) in Arabidopsis thaliana plants was analyzed. Under low temperature stress, the ThpI transgenic plants exhibited stronger growth than wild-type plants. The elevated cold tolerance of the ThpI over-expressing plants was confirmed by the changes of electrolyte leakage activity, malonyldialdehyde and proline contents. These results preliminarily showed that the Thp possibly be used to enhance the low temperature-tolerant ability of plants.

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