A plant virus mediates interspecific competition between its insect vectors inCapsicuum annuum

文献类型： 外文期刊

第一作者： Chen, Yong

作者： Chen, Yong;Wei, Hui;Zheng, Xue;Chen, Yong-Dui;Zheng, Kuan-Yu;Zhao, Li-Hua;Zhang, Jie;Mu, Ye;Zhao, Xing-Yue;Gao, Yu-Lin;Zheng, Li-Min

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关键词： Tomato zonate spot virus; Frankliniella occidentalis; Thrips palmi; Interspecific competition; Reproductive competition

期刊名称：JOURNAL OF PEST SCIENCE （ 影响因子：5.918； 五年影响因子：5.955 ）

ISSN： 1612-4758

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收录情况： SCI

摘要： Plant viruses can modify the performance and behavior of insect vectors to maximize their transmission rates. Whether viruses can evolve to mediate their insect vectors' interspecific competition is poorly understood. Here, we used two vectors of tomato zonate spot virus (TZSV), one native species (Thrips palmi) and one exotic species (Frankliniella occidentalis), to investigate this in laboratory and field experiments. TZSV infection increased the population growth of its insect vectors when the thrips species were isolated from one another. When both species coexisted,F. occidentalisdisplacedT. palmion both TZSV-infected and uninfected plants. However, on TZSV-infected plant,F. occidentaliscompletely displacedT. palmimore rapidly (within 14 days) than on uninfected plants. Our results also revealed that reproductive interference occurred between the two thrips species, whereas TZSV-infected pepper significantly decreased the reproductive interference ofT. palmitoF. occidentalis. WhenF. occidentalisandT. palmico-occurred in Jinning County, Yunnan Province, we found a rising trend of natural proportions ofF. occidentalisin the TZSV-infected pepper fields, suggesting that TZSV-infected pepper enhanced the competitive advantage ofF. occidentalisoverT. palmiin the field. Together, our findings demonstrate a plant virus that plays an important role in the competitive displacement of its insect vectors.

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