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Vitellogenin And Its Receptor Play E.ssential Roles In The D evelopment And Reproduction Of The Brown Citrus Aphid, Aphis (Toxoptera) Citricidus

文献类型：外文期刊

作者： Shang, F.;Niu, J. -Z.;Ye, C.;Zhang, Q.;Shang, F.;Ding, B. -Y.;Niu, J. -Z.;Ding, B. -Y.;Ye, C.;Wang, J. -J.;Smagghe, G.;Smagghe, G.;Smagghe, G.;Wang, Jin -Jun;Zhang, Q.;Zhang, W.;Zhang, W.

作者机构：

关键词： vitellogenin; vitellogenin receptor; brown citrus aphid; development; reproduction; RNAi

期刊名称： INSECT MOLECULAR BIOLOGY

ISSN： 0962-1075

年卷期： 2018 年 27 卷 2 期

页码：

摘要： Vitellogenin (Vg) and its receptor (VgR) play a key role in the reproductive process and development of insects. Aphids are a group of high-fecundity insect species with pseudoplacental viviparity, but the roles of their Vg and VgR genes have not been investigated yet. The brown citrus aphid, Aphis (Toxoptera) citricidus, is a major insect pest of citrus and the main vector of Citrus tristeza closterovirus. In this study, we identified and characterized these two genes, designated as AcVg and AcVgR, from the brown citrus aphid. We found that AcVg has lost the DUF1943 domain that is present in other insect Vgs. Silencing of AcVg and AcVgR led to a delay in the nymph-adult transition, a prolonged prereproductive period, and a shortened reproductive period, which in turn resulted in slower embryonic development and fewer new-born nymphs. Interestingly, silencing of AcVg decreased the transcript level of AcVgR, but silencing of AcVgR resulted in increased transcript levels of AcVg. In addition, silencing of Vg/VgR had similar phenotypes between alate and apterous morphs, suggesting that the functions of these two genes are the same in the two wing morphs of the aphid. Our results demonstrate that Vg and VgR are involved in various aspects of aphid development and reproduction. Further studies on the synthesis of Vg could help to elucidate the reproductive mechanism and provide information that will be useful for developing new pest control strategies.

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Vitellogenin And Its Receptor Play E.ssential Roles In The D evelopment And Reproduction Of The Brown Citrus Aphid, Aphis (Toxoptera) Citricidus

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