水分胁迫下钙对大豆膜脂过氧化保护酶系统的影响

艇控制营养钙量的方法培养大豆幼苗,得到３种钙水平的大豆幼苗作材料,对水分胁迫下（０．５ＭＰａ－ＰＥＧ－６０００）,不同钙水平大豆叶片饱和持水,超氧化物歧化酶、过氧化物酶、过氧化氢酶及其同工酶进行了研究,以期从膜脂过氧化的角度探讨钙在植被物抗旱中的作用。

Effect of Calcium on Anti-Oxidant Enzymes of Lipid Peroxidation of Soybean Leaves Under Water Stress

In order to probe the roles of calcium in drought resistance of plants, the soybean seedlinggrown in the solntion with different calcium conentration (0, 5, 14 mmol.L-1)were used to study theeffects of water stress (- 0.5 Mpa, PEG 600) on the activities of SOD, POD and CAT and theirisozymes in the leaves of differen calcium. The results showed that under water stress, the SOD activityincreased, the CAT activity deceased. Similar tendency of POD activity was found among the leaves ofthree Ca2+ treatments, it was "increased Becreased." The PAGE analysis showed that under waterstress condition, there were 10 bands of SOD, 3 bands of CAT in the leaves of different Ca2+ treatmnts.There were changes in bands of POD under both conditions.