Effects of Pyriproxyfen Exposure on Reproduction and Gene Expressions in Silkworm,Bombyx mori

文献类型: 外文期刊

第一作者: Qian, He-Ying

作者: Qian, He-Ying;Zhang, Xiao;Zhao, Guo-Dong;Guo, Hui-Min;Li, Gang;Xu, An-Ying;Qian, He-Ying;Zhao, Guo-Dong;Li, Gang;Xu, An-Ying

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关键词: Bombyx mori; gene expression; hormone regulation; ovary development; reproduction

期刊名称:INSECTS ( 影响因子:2.769; 五年影响因子:3.046 )

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年卷期: 2020 年 11 卷 8 期

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收录情况: SCI

摘要: The silkworm,Bombyx moriLinnaeus, is an important economic insect and a representative model organism of Lepidoptera, which has been widely used in the study of reproduction and development. The development of the silkworm's reproductive gland is easily affected by many external factors, such as chemical insecticides. After the silkworm larvae were treated with different concentrations of pyriproxyfen, the results showed that the number of eggs and hatching rate of eggs in the silkworm can be reduced by pyriproxyfen, and the concentration effects were displayed. Pyriproxyfen exposure could affect the normal development of the ovary tissue by reducing the number of oocytes and oogonia in the ovaries of silkworm fed with pyriproxyfen. We employed qRT-PCR, to detect the expressions of genes related to ovary development (Vg,Ovo, Otu,Sxl-SandSxl-L) and hormone regulation (EcRandJHBP2) in silkworm. Our study showed that the transcription levels ofVg,Ovo, Otu,Sxl-SandSxl-Lin the treatment group were lower than those in the control group (6.08%, 61.99%, 83.51%, 99.31% and 71.95%, respectively). The transcription level ofECRwas 70.22% for the control group, while that ofJHBP2was upregulated by 3.92-fold. Changes of transcription levels of these genes caused by pyriproxyfen exposure ultimately affect the absorption of nutrients, energy metabolism, ovary development and egg formation of the silkworm, thus leading to reproductive disorders of the silkworm. In general, our study revealed the response of silkworm reproduction to pyriproxyfen exposure and provided a certain reference value for the metabolism of the silkworm to pyriproxyfen.

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