植物抗逆性与光呼吸作用之间的关系  

RELATIONSHIP BETWEEN PLANT STRESS RESISTANCE AND PHOTORESPIRATION

作　　者：杨礼锐[1] 陈木楚 

机构地区：[1]华南农业大学农业生物系,广州510642

出　　处：《植物学通报》1991年第1期43-47,共5页Chinese Bulletin of Botany

摘　　要：用Na_2SO_3溶液浸泡,可以影响菠菜叶片中超氧物歧化酶的活性。较低浓度(0.1、1、10ppm)的该溶液使酶活性增加,而100ppm的该溶液则降低此酶的活性。同时发现叶片中光呼吸关键酶,即乙醇酸氧化酶活性也随着发生正相关的变化。讨论植物受SO_3^(2-)胁迫后,乙醇酸氧化酶的活性变化与植物抗逆性的产生可能存在密切的关系。Immersing-treatment of Na_2SO_3 solution on spinach leaves affected the activity of superoxide dismutase in the leaves, lower concentrations (0.1, 1, 10 PPm) of the solution increased the activity and 100 PPm decreased the activity. The activity of glycolate oxidase, a key enzyme of photo-restpiration showed similar results. The relationship between activity changes of glycolate oxidase and the resistance of plants treated by SO_3 is dicussed.

关 键 词：植物抗逆性 光呼吸 生物自由基 

分 类 号：Q945[生物学—植物学]