膜脂组成与植物抗冷性的关系及其分子生物学研究进展  

Relationship Between Plant Chilling Tolerance and Membrane Lipidscomposition and Its Advances in Researches on Molecular Biology

作　　者：陈娜[1] 郭尚敬[1] 孟庆伟[1] 

机构地区：[1]山东农业大学生命科学学院,泰安271018

出　　处：《生物技术通报》2005年第2期6-9,共4页Biotechnology Bulletin

基　　金：国家自然科学基金资助(30471053)资助

摘　　要：植物的抗冷性与膜脂的组分和结构密切相关,与质膜中脂肪酸的不饱和度关系更为密切。膜脂不饱和脂肪酸含量越高,膜脂相变温度越低,植物的抗冷性提高。植物体内存在一些降低膜脂脂肪酸饱和程度的酶,如甘油3磷酸酰基转移酶,ω3脂肪酸去饱和酶等,它们能够催化膜中脂肪酸的去饱和反应,生成不饱和脂肪酸,从而提高植物的抗冷性。本文就低温对膜脂的影响、膜脂组成与植物抗寒性的关系及其分子生物学研究进展作一简单综述。Chilling tolerance of higher plants is known to closely correlate with the composition and instruction of the membrane lipids, especially with the saturation of the membrane fatty acids. Usually, chilling resistant plants contain a large proportion of cis unsaturated fatty acids. There are some desaturases in plants which can catalyze the conversion of saturated fatty acids to unsaturated fatty acids, such as Glycerol 3 phosphateacyl transferase (GPAT), ω 3 fatty acids desaturase and so on. In this review, we briefly give an overview of the relationship between membrane lipid composition and plant chilling resistance and the advances of its molecular biological investigation.

关 键 词：分子生物学 研究进展 膜脂组成 植物抗冷性 脂肪酸去饱和酶 不饱和脂肪酸 脂肪酸含量 膜脂脂肪酸 酰基转移酶 植物抗寒性 不饱和度 相变温度 饱和程度 饱和反应 植物体 ω-3 催化膜 

分 类 号：Q943[生物学—植物学]