文献类型： 外文期刊
作者： Xu, Jing 1 ; Tian, Yong-Sheng 2 ; Peng, Ri-He 2 ; Xiong, Ai-Sheng 2 ; Zhu, Bo 2 ; Hou, Xi-Lin 1 ; Yao, Quan-Hong 2 ;
作者机构： 1.Nanjing Agr Univ, Coll Hort, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China
2.Shanghai Acad Agr Sci, Biotechnol Res Inst, Shanghai 201106, Peoples R China
关键词： Toxicology;Molecular Genetics: Biochemistry and Molecular Biophysics;Chemical Coordination and Homeostasis
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： Zinc is essential but toxic in excess. A bacterial metallothionein, SmtA from Synechococcus PCC 7942, has high affinity for Znpo and the intracellular exclusively handling of Znpo. In this study, we report a functional analysis of SmtA in Arabidopsis thaliana and its response to zinc stress. After high zinc stress, the transgenic plants over-expressing SmtA showed higher survival rate than the wild type. We also found that over-expression of SmtA in Arabidopsis increased the activities of SOD and POD, and enhanced the tolerance to zinc stress. Together, our results indicate that SmtA may play an important role in the response to zinc stress in Arabidopsis.
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