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The impact of co-infection by a nucleopolyhedrovirus and the endoparasitoid Microplitis pallidipes Szepligeti on the protective enzymes in hemolymph of Spodoptera exigua

文献类型： 外文期刊

作者： Wan, Nian-Feng 1 ; Ji, Xiang-Yun 1 ; Yin, Yang-Yi 1 ; Zhang, Hao 1 ; Jiang, Jie-Xian 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai Key Lab Protected Hort Technol, Shanghai, Peoples R China

关键词： Catalase;Microplitis pallidipes;nucleopolyhedrovirus;peroxidase;Spodoptera exigua;superoxide dismutase

期刊名称：INTERNATIONAL JOURNAL OF PEST MANAGEMENT （ 影响因子：1.907； 五年影响因子：1.849 ）

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收录情况： SCI

摘要： We determined the effects of parasitism by Microplitis pallidipes and/or nucleopolyhedrovirus (NPV) infection on protective enzymes in the hemolymph of Spodoptera exigua larvae. We found that concentrations of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) were constantly higher within the five observation days after treatment in parasitized/virus-infected than healthy (control) larvae. In parasitized + infected larvae, enzyme levels reduced from day 1 compared to parasitized larvae. Compared to enzyme levels in virus-infected larvae, in parasitized + infected larvae, CAT concentrations were generally lower, while SOD concentrations were significantly lower in the first two days and POD concentrations were lower in the first two days, but higher in following three days. We concluded that joint and separate parasitism and NPV infection promoted the activities of protective enzymes. Our findings also revealed that NPV infection inhibited the activities of protective enzymes induced by parasitism of M. pallidipes and that the parasitism inhibited the CAT activity induced by NPV infection.

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