高温胁迫对鳞叶藓失水量与可溶性糖含量变化的影响  

The effect of heat stress on water - loss and total sugar content of Taxiphyttum taxiramenum (Mitt. ) Fleisch

作　　者：罗在柒[1] 张显强[1] 唐金刚[1] 卢文芸[1] 乙引[1] 

机构地区：[1]贵州师范大学生物技术与工程学院,贵州贵阳550001

出　　处：《贵州师范大学学报（自然科学版）》2003年第4期63-65,共3页Journal of Guizhou Normal University：Natural Sciences

基　　金：贵州省自然科学基金(973098)

摘　　要：通过测定高温胁迫过程中鳞叶藓(Taxiphyllum taxiramenum(Mitt.)Fleisch)失水量与可溶性糖含量的变化。结果表明,失水量随胁迫时间的进程呈饱和曲线,相关性分析得出高温胁迫过程中鳞叶藓失水量与蔗糖含量的变化呈正相关(r=0.545);其中在胁迫过程中的0.5～4.0h阶段相关性极显著(r=0.996)。根据热激响应理论推理得到高温胁迫过程中石生苔藓水分亏缺能激活蔗糖关键酶,使其获得特定阶段的抗热性。This article studies the evaporating water and total sugar content during the course of heat stress on moss grown on stone. The results show that there is a positive correlation between evaporating water and sucrose ( r = 0. 545 ) , which can be apparent to it at the stage of 0. 5 h - 4h ( r = 0. 996 ). According to the theory of heat stress,we can draw a conclusion that the deficiency water,as HSF,can regulate and activate the secondary message to adapt the heat stress.

关 键 词：鳞叶藓 失水量 可溶性糖含量 高温胁迫 热激响应理论 抗热性 苔藓植物 

分 类 号：Q949.352[生物学—植物学] Q945.78