Climate warming exacerbates plant disease through enhancing commensal interaction of co-infested insect vectors

文献类型： 外文期刊

第一作者： Zhu, Liang

作者： Zhu, Liang;Xue, Qi;Ma, Gang;Ma, Chun-Sen;Ma, Chun-Sen

作者机构：

关键词： Climate change; Commensalism; Pathogen transmission; Drosophila melanogaster; Drosophila suzukii; Grape sour rot

期刊名称：JOURNAL OF PEST SCIENCE （ 影响因子：5.742； 五年影响因子：5.562 ）

ISSN： 1612-4758

年卷期：

页码：

收录情况： SCI

摘要： Pathosystems often involve two or more insect vector species; their positive or negative interactions may play key roles in plant pathogen transmission. Although climate warming likely causes changes in interactions among insect vectors by altering their demographics and behaviors, the mechanistic links between climate warming, insect vectors' interactions, and epidemic dynamics remain largely unknown. To determine these links, we conducted a factorial experiment to determine how climate warming impacts the interactions between two coexisting insect vectors [Drosophila melanogaster (common) and Drosophila suzukii (invasive)] in relation to the development of the economically important grape sour rot disease by testing their demographic performance and pathogen transmission efficacy. To determine underlying mechanisms, we hypothesized that the wound-making behavior of D. suzukii, which breaks the skin of grapes when ovipositing (zigzag movement), is a temperature-dependent process and can be improved under warming. We found that D. suzukii promoted population growth of D. melanogaster but not vice versa, showing a commensal interaction. The co-occurrence of the two vector species accelerated pathogen transmission. Under warmer temperatures, D. suzukii made more wounds in grapes, resulting in more oviposition sites for D. melanogaster, which increased population density of D. melanogaster, and a more extensive occurrence of the plant disease. Our findings highlight a novel impact of climate warming on a pathosystem, wherein stimulation of the behavior of the invasive species facilitated the vectoring capacity of the common species, which exacerbated the occurrence of the native plant disease. This novel climate-driven process in agroecosystem provides guidance for future pest and disease prediction.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序