高等植物硬脂酰-ACP脱饱和酶基因表达模式及在响应温度胁迫中的作用  

Expression Pattern of Stearoyl-ACP Desaturase Gene and Its Repsonse to High Temperature in Higher Plants

作　　者：赵丰兰[1] 张晗 段永波[1] 薛建平[1] Zhao Fenglan;Zhang Han;Duan Yongbo;Xue Jianping(Anhui Key Laboratory of Resources and Plant Biology,College of Life Sciences,Huaibei Normal University,Huaibei,23500)

机构地区：[1]淮北师范大学生命科学学院资源植物生物学安徽省重点实验室,淮北235000

出　　处：《分子植物育种》2018年第22期7350-7361,共12页Molecular Plant Breeding

基　　金：国家自然科学基金(31501368;81573518);安徽省自然科学基金(1608085MC52;1408085MC58);安徽高校科研平台创新团队项目(No.KJ2015TD001)共同资助

摘　　要：细胞膜为植物细胞响应温度胁迫的原初位点,其通过调节脂肪酸饱和程度适应温度变化。而硬脂酰-ACP脱饱和酶(SAD)是催化硬脂酸引进第一个不饱和键的关键酶,在调控膜饱和与不饱和脂肪酸比例中承担着重要功能。通过NCBI数据库获得42种高等植物SAD基因信息,本研究对其中内含子和UTR分布以及表达模式进行总结,分析不同来源SAD基因的功能及亲缘关系。同时回顾了SAD基因在植物响应低温和高温方面的研究进展,并对其在调控植物对温度响应的深入研究及遗传改良进行了展望。Cell membrane is the primary site of plant cells responding to temperature stress, which adapts to temperature changes by regulating the saturation of fatty acids. Stearoyl-ACP desaturase is the key enzyme to catalyze the stearic acid to introduce the first unsaturated bond, which plays an important role in regulating membrane saturation and unsaturated fatty acid ratio. In this review, the SAD genes from 42 higher plant species were retrieved from NCBI database. This study summarized the distribution and expression patterns of introns and UTR, and analyzed the function and genetic relationship of SAD genes from different sources. At the same time, the research advance of SAD gene in response to low and high temperature were reviewed, and the application potential of SAD genes in plant in response to temperature stress and its genetic engineering were prospected.

关 键 词：高等植物 硬脂酰-ACP脱饱和酶 温度逆境 研究进展 

分 类 号：Q943.2[生物学—植物学]