温度对叶片延迟发光的影响  

Effect of Temperature on Delayed Luminescence of Leaf

作　　者：李光[1] 杨海莲[1] 陈静伟[1] 曹晓兵[1] 廖祥儒[1] 杨景发[1] 

机构地区：[1]河北大学物理科学与技术学院,河北保定071002

出　　处：《河北大学学报（自然科学版）》2005年第1期24-28,103,共6页Journal of Hebei University(Natural Science Edition)

基　　金：河北大学博士基金资助项目(2002y01)

摘　　要：以绿宝石喜林芋叶片为材料研究了不同温度对叶片延迟发光和超氧物歧化酶(SOD)、脂氧合酶(LOX)活性的影响.结果表明:随温度的升高,延迟发光的衰减系数先增加后减小,在15℃时有一最大值;延迟发光的最大强度也会随温度的不同而发生改变,当温度达到50℃时,叶片基本上不再具有延迟发光的特性;SOD,LOX活性与延迟发光之间存在极为密切的关系.The influence of different temperatures on delayed luminescence(DL)and the activity of superoxiditive dismutase(SOD) and lipoxygenase(LOX) have been investigated in green emerald leaf. The results show that with temperature increasing,the attenuation coefficient gradually increase firstly and then decrease,and at 15℃ the attenuation coefficient reaches the highest point; following the different temperature,the maximal intensity of delayed luminescence also changes,and that when the temperature reaches 50℃,the leaf has basically no characteristic of delayed luminescence;there is a close relation bewteen the DL and the activity of SOD and LOX.

关 键 词：温度 叶片 延迟发光 超氧物歧化酶 脂氧合酶 

分 类 号：Q632[生物学—生物物理学]