Effects of Glutathione on the Tolerance of Water Stress and Antioxidative Enzyme Activity in Cut Rose
Application of GSH and its biosynthetical inhibitor BSO on the tolerance to water stress and antioxidative enzyme in petals of cut rose Samantha were studied. Vase life of cut rose pre treated with water for 12h followed by 24h water stress decreased 53％ compared with non-stress. 2 mM GSH pretreatment prolonged vase life significantly, increased markedly water potential during recovery, decreased dramatically MDA content all through the treatment. Contrary results were obtained in 2mM BSO pretreated flowers. The antioxidative enzyme activities of stress control increased with the beginning of stress and decreased with the severity of stress. After water recovery, the activities of antioxidative enzyme increased again and reduced with senescence. GSH pretreatment promoted the activities of GR, GPX, SOD and APX during stress and vasing, while decreased the content of MDA. The activities of GR, GPX, SOD were decreased by BSO pretreatment during stress. Activities of GR, GPX, SOD, POD, CAT and APX were lowered compared with stress control during water recovery. The results suggest that the effect of enhancement of GSH on tolerance to water deficit stress is related to the promotion of the antioxidant enzyme activities and the decrease in membrane lipid peroxidation.
cut rose antioxidant enzyme water stress glutathione
Wang Zihua Gao Junping
Pan YuxiaCollege of Horticultural Science andTechnology, Hebei Normal University ofScience & Technol Department of Ornamental Horticultureand Landscape Architecture, ChinaAgricultural University
国际会议
The 2nd Conference on Horticulture Science and Technology(第二届园艺科学与技术学术会议 CHST 2010)
北京
英文
138-142
2010-12-18（万方平台首次上网日期，不代表论文的发表时间）