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

This paper studied the effects of 0.3 mmol x 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 x 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.