一氧化氮对拟南芥抗灰葡萄孢菌分泌的大分子毒素毒性的影响  

Effects of Nitric Oxide on Resistance of Arabidopsis to Macromolecular Toxins from Botrytis cinerea

作　　者：杨红玉[1] 夏绍嫘[2] 吴嘉[3] 杨黎江[1] 侯思名[1] 

机构地区：[1]昆明学院生命科学与生物技术系,云南昆明650118 [2]云南师范大学生命科学学院,云南昆明650092 [3]昆明医科大学基础医学院,云南昆明650500

出　　处：《西南农业学报》2013年第4期1503-1506,共4页Southwest China Journal of Agricultural Sciences

基　　金：国家自然科学基金(30860121)

摘　　要：以拟南芥为材料,研究外源一氧化氮供体硝普钠(SNP)对经灰葡萄孢菌分泌的大分子毒素处理后植物幼苗的生长,以及叶片中过氧化物酶(POD)、超氧化物歧化酶(SOD)活性和丙二醛(MDA)含量的影响。结果表明,SNP能缓解大分子毒素对拟南芥幼苗的毒性作用,促进毒素处理后幼苗的生长。同时,SNP能显著提高拟南芥叶片中POD活性,而对SOD活性则影响不明显,且显著降低MDA的含量。说明SNP可能通过增强POD活性,降低MDA含量来增强植物的抗毒性。Arabidopsis is used to study the effects d nitric oxide（NO） donor sodium nitmpmsside （SNP） on seedlings development, the activ- ities of peroxldase （POD） and superoxide dismutase （SOD）, and the contents of malonaldehydic acid （MDA） during treatment with macro- molecular toxins secreted by Botryt/s dnerea. The results showed that SNP could relive the damage of toxin on the seedlings. And SNP could improve the growth of plants during macromolecular toxin treatment. It was also observed in this test that SNP could increase significantly POD activities of leaves. But the activities of SOD kept unchanged. The contents of MDA were significantly reduced. These results implied that SNP may enhance the resistance of the plant through the biochemstrical mechanisms of increasing activity of enzyme POD and reduce the content of MDA.

关 键 词：大分子毒素 一氧化氮 灰葡萄孢菌 拟南芥 

分 类 号：S436[农业科学—农业昆虫与害虫防治]