低温驯化对部分丛生竹种叶片膜脂脂肪酸的影响  

Changes in Membrane Lipid Fatty Acids of Some Sympodial Bamboos in Response to Low Temperature Exposure

作　　者：张玮[1] 谢锦忠[1] 吴继林 林海青 

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江富阳311400 [2]福建省永安市林业局,福建永安366000

出　　处：《林业科学研究》2009年第1期139-143,共5页Forest Research

基　　金：福建省林业厅林业科技项目“优良耐寒丛生竹种选育及其组培快繁技术研究”闽林科(2006)函3号

摘　　要：The effect of low temperature on membrane lipid fatty acid composition in the leaves of some sympodial bamboo species was studied.The results showed that the two major lipid fatty acids were palmitic acid and linolenic acid.The ratio of unsaturated fatty acid and the Index of unsaturated fatty acid(IUFA) of tested sympodial bamboos increased under low temperature treatment,and the ratio of membrane unsaturated fatty acid composition of cold-resistant sympodial bamboos was higher than that of cold-sensitive sympodial bamboos.The results indicated that the content of unsaturated fatty acid of sympodial bamboos had a close relationship with its cold sensitivity after acclimation in winter.Under low temperature stress,the content of membrane unsaturated fatty acid increased significantly to maintain membrane fluidity.The effect of low temperature on membrane lipid fatty acid composition in the leaves of some sympodial bamboo species was studied. The results showed that the two major lipid fatty acids were palmitic acid and linolenic acid. The ratio of unsaturated fatty acid and the Index of unsaturated fatty acid （IUFA） of tested sympodial bamboos increased under low temperature treatment, and the ratio of membrane unsaturated fatty acid composition of coldresistant sympodial bamboos was higher than that of cold-sensitive sympedial bamboos. The results indicated that the content of unsaturated fatty acid of sympodial bamboos had a close relationship with its cold sensitivity after acclimation in winter. Under low temperature stress, the content of membrane unsaturated fatty acid increased significantly to maintain membrane fluidity.

关 键 词：丛生竹种 膜脂脂肪酸 低温 

分 类 号：S795.5[农业科学—林木遗传育种]