低温胁迫下线粒体氧化酶活化能的适应性变化  

The Adaptive Changes of Activation Energy of Mitochondria Oxidase Accompanied with the Temperature Decrease

作　　者：梁莉[1] 谈锋[2] 

机构地区：[1]温州师范学院生物与环境科学系,浙江温州325003 [2]西南师范大学生命科学系,重庆400715

出　　处：《温州师范学院学报》2000年第6期50-52,共3页Journal of Wenzhou Teachers College(Philosophy and Social Science Edition)

摘　　要：本文以自然生长条件下的大头茶为材料 ,测定了随气温下降 ,叶片线粒体α 酮戊二酸氧化酶活力　　及膜脂脂肪酸组分的变化 ,并据酶活力变化绘Arrhenius图 .结果表明 ,随气温下降 ,膜脂脂肪酸不饱和度增加 .线　　粒体膜结合的α 酮戊二酸氧化酶活化能折点温度下降 。Using the field grown G.acuminata ,the authors investigated the change of fatty acid composition and α ketoglutaric oxidase activity of leaf mitochondria,and drew Arrthenius plots according to the change of the oxidase activity.The results indicated that accompanied with the temperature decrease,the IUFA raised and the broken point temperature of activation energy of membrane bound α detoglutaric oxidase of motochondria decreased.That is helpful to protect the membrane from chilling stress.

关 键 词：活化能折点温度 大头茶 α-酮戊二酸氧化酶 低温胁迫 线粒体 酶活力 膜结合酶 适应机理 膜脂脂肪酸 

分 类 号：S571.101[农业科学—茶叶生产加工] Q945.78[农业科学—作物学]