Effect of Damping-off Infection on Protective Enzyme Systems in Dry Raising of Rice Seedlings

doi:10.3321/j.issn:1000-7091.2002.z1.002

Abstract

Abstract: When damping off infection occurred,the activity of the protective enzyme systems in the rice seedling changed significantly.The activities of SOD and POD in the seedling roots were significantly lower than that of the health seedling,but their activities in the shoot showed higher than that of the healthy ones.The changes of CAT were reverse to SOD and POD.Infected seedling's had higher PAL and PPO activities in the shoots and higher PPO activities in the roots than that of the healthy ones.MDA content in the roots of the infected seedlings was higher than that of the uninfected ones,while infected shoots had lower MDA content than healthy ones.The pattern of PAGE of isoperoxidase showed that there was one band in infected rice seedlings more than healthy seedlings.

Key words: Rice, Damping off, SOD, POD, CAT, PAL, PPO, MDA, Isoperoxidase

CLC Number:

S435.11

LIU Feng, ZHANG Wen-ji, DING Xiu-ying, ZHANG Jun. Effect of Damping-off Infection on Protective Enzyme Systems in Dry Raising of Rice Seedlings[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2002, 17(S1): 6-11. doi: 10.3321/j.issn:1000-7091.2002.z1.002.

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