| 植物Cu,Zn-SOD分子调控机理研究进展 |
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| 引用本文： | 姚婕,赵艳玲. 植物Cu,Zn-SOD分子调控机理研究进展[J]. 热带农业科学, 2014, 0(3): 55-61 |
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| 作者姓名： | 姚婕 赵艳玲 |
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| 作者单位： | 华侨大学化工学院,福建厦门361021 |
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| 基金项目： | 国家自然科学基金项目（No.31300497）;华侨大学高层次人才科研启动基金项目. |
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| 摘 要： | 铜/锌超氧化物歧化酶(Cu,Zn-SOD)能清除植物体内有害的活性氧(ROS),参与植株遭受逆境胁迫时的应激反应等过程。铜分子伴侣(CCS)可以传递铜离子到Cu,Zn-SOD当中,并将其激活生成有活性的酶分子,依赖CCS协助是Cu,Zn-SOD主要的激活途径。植物在铜缺乏的环境下会诱导启动子结合蛋白(SPL7)和小RNA398(miR398)的表达,miR398通过降解编码Cu,Zn-SOD的mRNA抑制Cu,Zn-SOD的生成,从而调控植物体内铜平衡。本文主要对植物Cu,Zn-SOD激活和调控途径进行综述。
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| 关 键 词： | Cu Zn—SOD CCS miR398 SPL7 调控途径 |
Molecular Regulation Mechanism Research Progress on Plant Cu,Zn-SOD |
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| YAO die ZHAO Yanling. Molecular Regulation Mechanism Research Progress on Plant Cu,Zn-SOD[J]. Chinese Journal of Tropical Agriculture, 2014, 0(3): 55-61 |
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| Authors: | YAO die ZHAO Yanling |
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| Affiliation: | YAO die ZHAO Yanling (College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021) |
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| Abstract: | Superoxide dismutases （Cu,Zn-SODs） are important antioxidant enzymes that catalyze the disproportionation of superoxide anion to oxygen and hydrogen peroxide to guard cells against superoxide toxicity. The major pathway for activation of copper/zinc SOD （CSD） requiring the CCS copper chaperone to insert copper and activate SOD1 through oxidation of an intramolecular disulfide. Expression of miR398 and SPL7 （for SQUAMOSA promoter binding protein-like7） are induced in response to copper deficiency and miR398 is involved in the degradation of mRNAs encoding copper/zinc superoxide dismutase. This paper reviewed on plant Cu, Zn-SOD activation and regulatory pathways. |
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| Keywords: | Cu,Zn-SOD CCS miR398 SPL7 regulatory pathways |
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