| 植物螯合肽的转运与功能研究进展 |
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| 引用本文： | 张中春,邱保胜.植物螯合肽的转运与功能研究进展[J].植物生理学通讯,2012(5):425-428. |
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| 作者姓名： | 张中春 邱保胜 |
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| 作者单位： | 华中师范大学生命科学学院,湖北省遗传调控与整合生物学重点实验室,武汉430079 |
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| 基金项目： | 教育部新世纪优秀人才计划项目（NCET-08-0786）. |
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| 摘 要： | 植物螯合肽（phytochelatins，PCs）是由植物螯合肽合酶催化谷胱甘肽合成的一类生物小分子，结构式为（γ-Glu-Cys）n-Gly（n=2-11），在真菌和高等植物耐受重金属胁迫机制中具有重要作用。近年来，人们在Pc介导重金属脱毒害的分子机理研究上取得了重要进展，发JLSpHMT1和SpABC2是PC在裂殖酵母中介导重金属液泡区室化的主要转运蛋白，鉴定了拟南芥液泡膜PC转运蛋AtABCC1和AtABCC2。此外，PCs也可能在超积累植物细胞内对重金属脱毒害具有重要功能。
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| 关 键 词： | 超积累植物 植物螯合肽 重金属 转运蛋白 |
Research Advances of Phytochelatin Transport and Its Function |
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| ZHANG Zhong-Chun,QIU Bao-Sheng.Research Advances of Phytochelatin Transport and Its Function[J].Plant Physiology Communications,2012(5):425-428. |
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| Authors: | ZHANG Zhong-Chun QIU Bao-Sheng |
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| Institution: | Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan 430079, China |
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| Abstract: | Phytochelatins （PCs） are synthesized by PC synthases from glutathione with the general structure of （γ-Glu-Cys）n-Gly （n=2-11）. They are necessary for heavy metal tolerance in fungi and higher plants. Recent studies have shown that both SpHMT1 and SpABC2 play an important role in PC-mediating heavy metal se- questration in the vacuole of Schizosaccharomycespombe, while AtABCCI and AtABCC2 are the major transporters for removing PC-heavy metal complexes from cytosol into the vacuole ofArabidopsis thaliana. In addition, several studies have suggested that PCs might detoxify heavy metal inside the cells ofhyperaccumulator. |
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| Keywords: | hyperaccumulator phytochelatin heavy metal transporter |
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