VDE基因在植物抗逆响应中的功能  

Functions of VDE in plant response to stresses

作　　者：宋兴舜[1] 孙丽娜[1] 张秋艳[1] 王瑞芳[1] 

机构地区：[1]东北林业大学生命科学学院,哈尔滨150040

出　　处：《东北农业大学学报》2016年第9期85-90,99,共7页Journal of Northeast Agricultural University

基　　金：国家自然科学基金项目(30800876;31170569);中央高校基本科研业务费专项资金项目(2572015DA02;2572014EA04)

摘　　要：叶黄素循环存在于高等植物和绿色藻类,是保护植物光合机构免受过剩光能破坏的重要机制。作为叶黄素循环关键酶,紫黄质脱环氧化酶(VDE)可催化双脱氧紫黄质(V)脱环氧化成单环氧玉米黄质(A)进而生成玉米黄质(Z),保护光合器官免受过剩光能破坏。VDE活性受多种因素调节,在非生物胁迫下,植物多种叶绿素荧光等指标均受影响,近期利用过表达、突变体与野生型植株对比研究进一步揭示VDE基因在植物生长中的重要作用。文章综述近年来有关VDE在植物抗逆生理中的功能研究进展。The xanthophyll cycle exists in higher plants and green algae, which is considered to function as protecting plant photosynthetic apparatus from the damage of excessive light. Violaxanthin de-epoxidase （VDE）, a key enzyme in xanthophyll cycle, could catalyze the conversion of violaxanthin （V） via antheraxanthin （A） and then to zeaxalnthin （Z）, protecting photosynthesis apparatus from photo damage. VDE activity was regulated by a variety of factors. It had been suggested that some factors, such as cholophyll fluorescence, were influenced by abiotic stresses. The recent investigations revealed the important role of VDE in plant growth by overexpression, mutations of genes as well as wild type plants. In this review, we reviewed the recent research progress on functions of VDE in plant response to stresses.

关 键 词：VDE 紫黄质脱环氧化酶 非生物胁迫 光合参数 荧光参数 

分 类 号：Q943.2[生物学—植物学]