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外源一氧化氮对梨叶片感染轮纹病菌后膜脂过氧化的影响

刘招龙1,2;张绍铃1;孙益林1   

  1. 1南京农业大学园艺学院, 南京 210095; 2宁德师范高等专科学校生物系, 福建宁德 352100
  • 收稿日期:2006-07-19 修回日期:1900-01-01 出版日期:2007-07-16 发布日期:2007-07-16

Effects of exogenous nitric oxide donor on lipid peroxidation of pear leaves infected by Physalosproa pirico Nose.

LIU Zhao-long1,2; ZHANG Shao-ling1; SUEN Yi-lin1   

  1. 1College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China;2Department of Biology, Ningde Teachers College, Ningde 352100, Fujian, China
  • Received:2006-07-19 Revised:1900-01-01 Online:2007-07-16 Published:2007-07-16

摘要: 研究了0.3 mmol·L-1一氧化氮供体硝普钠(SNP)对梨叶片感染轮纹病菌(Physalospora piricola Nose)后抗氧化酶及活性氧的影响.结果表明,经0.3 mmo1·L-1SNP处理后,梨叶片过氧化物酶(POD)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、多酚氧化酶(PPO)活性及抗坏血酸(ASA)、还原型谷胱甘肽(GSH)和脯氨酸(Pro)含量分别比接种对照组(喷清水接种处理,CK1)提高了39.41%、21.11%、41.61%、13.04%、44.45%、48.32%和33.80%;丙二醛(MDA)、过氧化氢(H2O2)含量及超氧阴离子(O2-)产生速率分别比CK1组降低了20.45%、6.93%和6.27%.表明较低浓度的SNP可缓解轮纹病菌对梨叶片的伤害作用.

关键词: 小麦, 补灌时期, 光合特性, 干物质积累与分配, 水分利用效率

Abstract: This paper studied the effects of 0.3 mmol·L-1 SNP on the antioxidant enzymes and reactive oxygen in pear leaves infected by Physalosproa piricola Nose. The results showed that compared with CK1 (spraying leaves with water and infecting with P. piricola Nose), 0.3 mmol·L-1 SNP could increase the activities of leaf POD, SOD, CAT and PPO and the contents of leaf ASA, GSH and proline by 39.41%, 21.11%, 41.61%, 13.04%, 44.45%, 48.32% and 33.80%, while decrease the contents of leaf MDA and H2O2 and the generating rate of O2- by 20.45%, 6.93% and 6.27%, respectively, indicating that lower concentration SNP could reduce the damage of P. piricola Nose to pear leaves.

Key words: wheat, supplemental irrigation period, photosynthetic characteristics, dry matter accumulation and allocation, water use efficiency