胞质3-磷酸甘油醛脱氢酶在ABA与H2O2介导的氧化应激中的潜在作用  

Role of Cytoplasmic 3-Phosphate Glyceraldehyde Dehydrogenase in Oxidative Stress Mediated by ABA and H2O2

作　　者：罗娅[1] 杨敏 葛聪 LUO Ya;YANG Min;GE Cong(College of Horticulture,Sichuan Agricultural University,Chengdu 611130,China;College of Business,Business School of Chengdu College of Electronic Science and Technology,Chengdu 611731,China)

机构地区：[1]四川农业大学园艺学院,成都611130 [2]电子科技大学成都学院商学院,成都611731

出　　处：《四川农业大学学报》2022年第6期805-811,861,共8页Journal of Sichuan Agricultural University

基　　金：国家自然科学基金项目(3180817);厅市共建甘薯及特色豆科作物种质资源创新与利用四川省重点实验室项目(2021CGIHL05);四川天府新区乡村振兴研究院“揭榜挂帅”项目(XZY1-08);四川农业大学专业建设支持计划(040-2121997770)。

摘　　要：【目的】研究胞质3-磷酸甘油醛脱氢酶(cytosolic glyceraldehyde-3-phosphate dehydrogenase,GAPC)在植物脱落酸(abscisic acid,ABA)和过氧化氢(hydrogen peroxide,HO)介导的氧化应激中的潜在作用。【方法】通过目前的研究结果对ABA和HO信号转导过程及GAPC的多功能性进行总结。【结果】ABA是响应植物非生物胁迫和气孔关闭的重要激素,HO是ABA介导应激反应的关键信号分子,GAPC因半胱氨酸残基上存在易被氧化修饰的巯基分子,所以在本身的催化功能之外还具有信号转导功能。在氧化胁迫下,GAPC参与了植物HO依赖性信号转导的过程,并作为修饰蛋白发挥其多功能性。【结论】GAPC通过“兼职”或调控初生代谢的转变来响应氧化胁迫。【Objective】 To investigate the role of cytosolic glyceraldehyde-3-phosphate dehydrogenase(GAPC)in abscisic(ABA)and hydrogen peroxide(HO)-mediated oxidative in plants. 【Method】The results of the present studies were used to summarize theABA and HOsignal transduction process and the multifunctionality of GAPC.【Result】ABA is an important hormone in response to abiotic stress and stomatal closure in plants,and HOis a key signaling molecule for ABA-mediated stress responses.Due to GAPC in cysteine residues possesses sulfhydryl molecules that are susceptible to be oxidation,GAPC has signal transduction function besides catalytic function. Under oxidative stress,GAPC participates in the process of plant HO-dependent signal transduction,and plays multifunctional roles as a modified proteins.【Conclusion】GAPC responds to oxidative stress by moonlighting or the regulation of primary metabolism transformation.

关 键 词：胞质3-磷酸甘油醛脱氢酶 氧化胁迫 过氧化氢 脱落酸 

分 类 号：Q945.78[生物学—植物学]