抗坏血酸和谷胱甘肽在小麦幼苗冷激诱导抗冷性中的变化  

Changes of Ascorbate and Glutathione in Cold-shock-induced Chilling Resistance in Wheat Seedlings

作　　者：郭丽红[1] 王定康[1] 王德斌[1] 陈雪[1] 程威[1] 陈善娜[2] 

机构地区：[1]昆明师范高等专科学校生物系,云南昆明650031 [2]云南大学生命科学学院,云南昆明650091

出　　处：《昆明师范高等专科学校学报》2007年第4期66-68,共3页Journal of Kunming Teachers College

基　　金：云南省教育厅自然科学基金资助项目(04Y670B);"211工程"二期建设费及植物学博士点经费资助项目;昆明师范高等专科学校重点学科建设基金资助项目(Z-002)

摘　　要：以小麦幼苗为实验材料,研究冷激及冷胁迫处理过程中的抗坏血酸和谷胱甘肽含量变化,结果显示冷激处理小麦幼苗可导致还原型抗坏血酸和还原型谷胱甘肽的含量比对照组高,而脱氢抗坏血酸和氧化型谷胱甘肽的含量比对照组低.表明冷激处理可以使小麦幼苗细胞内抗坏血酸库和谷胱甘肽库中还原状态的抗坏血酸和谷胱甘肽含量明显增加,以有效地清除低温胁迫产生的活性氧的危害,从而提高小麦幼苗的抗冷性.说明抗坏血酸和谷胱甘肽参与冷激诱导抗冷性的过程中起重要作用.Measurement of content changes of antioxidant AsA, DHA, GSH, GSSG showed that the wheat seedlings with cold pretreatment, which induced chilling Resistance, could retain relatively higher content of AsA and GSH and lower content of DHA and GSSG under chilling stress as compared with the control seedlings without cold-shock pretreatment, indicating that cold-shock-induced chilling Resistance is related to the enhancement of AsA and GSH in wheat seedlings to chilling stress, implying that ascorbate and glutathione could play an important role in the formation of. cold-shock-induced chilling Resistance.

关 键 词：小麦幼苗 冷激 抗冷性 抗坏血酸 谷胱甘肽 

分 类 号：Q946.1[生物学—植物学]