BADH在植物响应非生物胁迫中的作用  

The role of BADH in the response to abiotic stress in plants

作　　者：韩悦欣 伍国强[1] 魏明 王北辰 HAN Yuexin;WU Guoqiang;WEI Ming;WANG Beichen(School of Life Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学生命科学与工程学院,兰州730050

出　　处：《植物生理学报》2022年第2期254-264,共11页Plant Physiology Journal

基　　金：国家自然科学基金(31860404和32160466);兰州市科技计划项目(2021-1-165)。

摘　　要：非生物胁迫(如高盐、干旱、高温和寒冷等)是制约植物生长和发育的主要环境因素。甜菜碱作为一种有效的小分子渗透调节物质,在植物体内大量积累不仅无危害,而且还可有效地提高植物的抗逆性。甜菜碱醛脱氢酶(betaine aldehyde dehydrogenase,BADH)是甜菜碱合成通路中的关键酶,在植物抗逆性中发挥着极其重要的作用。本文对BADH的结构、分类、生物学功能及其在植物响应非生物胁迫中的作用等方面的研究进展加以综述,并对其未来研究方向进行展望,为其在农作物抗逆性遗传改良中的应用提供一定依据。Abiotic stresses,i.e.,high salt,drought,high temperature and cold,are the major environmental factors that restrict plant growth and development.As an effective small molecule osmotic regulator,betaine not only can be accumulated in a large amount in plants without any harm,but also is able to effectively improve the resistance of plants to adverse environments.Betaine aldehyde dehydrogenase(BADH)is a key enzyme in the pathway of betaine biosynthesis,and plays an extremely important role in plant resistance to abiotic stresses.Here,the progresses on the structure,classification,and biological functions of BADH,and its roles in the response of plants to abiotic stress were summarized.The future research direction on the BADH family was also prospected.This work would provide some references for improving crops stress resistance.

关 键 词：甜菜碱 甜菜碱醛脱氢酶 结构 非生物胁迫 抗逆性 

分 类 号：Q945.78[生物学—植物学]