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The change of POD,SOD and CAT activity associated with black rot infection in resistant and susceptible sweet potato

机译:抗病易感甘薯黑腐病相关POD,SOD和CAT活性的变化

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In order to reveal the physiological and biochemical mechanism of black rot resistance,the activity of POD,SOD and CAT in resistant and susceptible sweetpotato cultivars treated with the black rot pathogen was tested. The results showed that inoculation of black rot significantly enhanced the activity of SOD and POD in a black rot resistant cultivar,NanJing-92,and a susceptible cultivar, Yan252. Both SOD and POD activities in NanJing-92 treated with black rot were significantly higher than those in treated Yan-252. The activities of SOD and POD peaked on the 4~th day post inoculation,at 536U/min ? mg and 856U/gFw in Nan Jing-92,and 348U/min ? mg and 568U/gFw in Yan-252,respectively. The CAT activity was reduced after inoculation to 73.17% in NanJing-92 and 63.63% in Yan-252. Our results suggest that the changes of POD, SOD and CAT activity induced by inoculation of black rot may be connected to the black rot resistance of sweetpotato.
机译:为了揭示黑腐病抗性的生理生化机制,对POD,SOD和CAT在黑腐病菌处理的抗性和易感甘薯品种中的活性进行了测试。结果表明,接种黑腐病可以显着提高抗黑腐病品种南京92和感病品种Yan252的SOD和POD活性。黑腐病处理的南京92号的SOD和POD活性均显着高于Yan-252处理的SOD和POD活性。接种后第4天SOD和POD的活性达到峰值,为536U / min。南京92号的mg和856U / gFw,348U / min?分别在Yan-252中的mg和568U / gFw。接种后的CAT活性在南京92降低到73.17%,在盐252降低到63.63%。我们的研究结果表明,接种黑腐病引起的POD,SOD和CAT活性的变化可能与甘薯的黑腐病抗性有关。

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