Tomato Chlorosis Virus Infection Facilitates Bemisia tabaci MED Reproduction by Elevating Vitellogenin Expression
文献类型： 外文期刊
作者： Huang, Liping 1 ; Shi, Xiaobin 1 ; Shi, Jizhe 3 ; Zhang, Zhuo 2 ; Fang, Yong 4 ; Zhang, Zhanhong 5 ; Pan, Qiuyi 6 ; Zheng 1 ;
作者机构： 1.Hunan Univ, Longping Branch, Grad Sch, Changsha 410125, Peoples R China
2.Hunan Acad Agr Sci, Inst Plant Protect, Changsha 410125, Peoples R China
3.Univ Kentucky, Dept Entomol, Lexington, KY 40546 USA
4.Hunan Acad Agr Sci, Inst Biotechnol, Changsha 410125, Peoples R China
5.Hunan Acad Agr Sci, Inst Vegetable, Changsha 410125, Peoples R China
6.Plant Protect & Plant Inspect Stn, Changde 415000, Peoples R China
关键词： Bemisia tabaci; fecundity; ovarian development; gene expression; RNA interference; vitellogenin
期刊名称：INSECTS （ 影响因子：2.769； 五年影响因子：3.046 ）
ISSN：
年卷期： 2021 年 12 卷 2 期
页码：
收录情况： SCI
摘要： Simple Summary The sweet potato whitefly, Bemisia tabaci, is a polyphagous, global invasive insect pest. It can damage vegetables and crops directly by feeding and indirectly by transmitting plant viruses. Previously, we showed that virus infection of host plants can promote B. tabaci MED (Q biotype) reproduction. Here, using a whitefly-tomato chlorosis virus (ToCV)-tomato system, we investigated how ToCV modulates B. tabaci reproduction to facilitate its spread. ToCV infection significantly increased whitefly fecundity and the relative expression of vitellogenin gene (Vg). Both ovarian development and fecundity of whitefly were suppressed when Vg expression was silenced with or without ToCV infection. These combined results reveal that ToCV infection increases B. tabaci MED fecundity via elevated vitellogenin gene expression. Transmission of plant pathogenic viruses mostly relies on insect vectors. Plant virus could enhance its transmission by modulating the vector. Previously, we showed that feeding on virus infected plants can promote the reproduction of the sweet potato whitefly, Bemisia tabaci MED (Q biotype). In this study, using a whitefly-Tomato chlorosis virus (ToCV)-tomato system, we investigated how ToCV modulates B. tabaci MED reproduction to facilitate its spread. Here, we hypothesized that ToCV-infected tomato plants would increase B. tabaci MED fecundity via elevated vitellogenin (Vg) gene expression. As a result, fecundity and the relative expression of B. tabaci MED Vg was measured on ToCV-infected and uninfected tomato plants on days 4, 8, 12, 16, 20 and 24. The role of Vg on B. tabaci MED reproduction was examined in the presence and absence of ToCV using dietary RNAi. ToCV infection significantly increased B. tabaci MED fecundity on days 12, 16 and 20, and elevated Vg expression on days 8, 12 and 16. Both ovarian development and fecundity of B. tabaci MED were suppressed when Vg was silenced with or without ToCV infection. These combined results suggest that ToCV infection increases B. tabaci MED fecundity via elevated Vg expression.
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