Identification and characterization of Prx5 and Prx6 in Chilo suppressalis in response to environmental stress

文献类型： 外文期刊

第一作者： Mo, Wujia

作者： Mo, Wujia;Wang, Shuping;Mo, Wujia;Li, Qiang;Lu, Zhongxian;Xu, Hongxing;Zheng, Xusong;Guo, Jiawen;Lu, Yanhui;He, Xiaochan;Wang, Shuping;Lu, Yanhui;Wang, Shuping

作者机构：

关键词： Chilo suppressalis; environmental stress; gene expression; peroxiredoxin

期刊名称：ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：2.2； 五年影响因子：2.1 ）

ISSN： 0739-4462

年卷期： 2023 年

页码：

收录情况： SCI

摘要： The antioxidant proteins, peroxiredoxins (Prxs), function to protect insects from reactive oxygen species-induced toxicity. In this study, two Prx genes, CsPrx5, and CsPrx6, were cloned and characterized from the paddy field pest, Chilo suppressalis, containing open reading frames of 570 and 672 bp encoding 189 and 223 amino acid polypeptides, respectively. Then, we investigated the influence of various stresses on their expression levels using quantitative real-time PCR (qRT-PCR). The results showed expression of CsPrx5 and CsPrx6 in all developmental stages, with eggs having the highest level. CsPrx5 and CsPrx6 showed higher expression in the epidermis and fat body, and CsPrx6 also showed higher expression in midgut, fat body, and epidermis. Increasing concentrations of insecticides (chlorantraniliprole and spinetoram) and hydrogen peroxide (H2O2) increased the expression levels of CsPrx5 and CsPrx6. In addition, the expression levels of CsPrx5 and CsPrx6 were almost markedly upregulated in larvae under temperature stress or fed by vetiver. Thus, CsPrx5 and CsPrx6 upregulation might increase the C. suppressalis defense response by reducing the impact of environmental stress, providing a better understanding of the relationship between environmental stresses and insect defense systems.

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