Pathogens are an important driving force for the rapid spread of symbionts in an insect host
文献类型： 外文期刊
作者： Zhao, Dongxiao 1 ; Zhang, Zhichun 1 ; Niu, Hongtao 1 ; Guo, Huifang 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing, Peoples R China
期刊名称：NATURE ECOLOGY & EVOLUTION （ 影响因子：16.8； 五年影响因子：16.9 ）
ISSN： 2397-334X
年卷期： 2023 年
页码：
收录情况： SCI
摘要： A combination of field and experimental work suggests that fungal pathogen pressure can selectively drive the symbiont Ricksettia to fixation in its whitefly host, through Ricksettia-conferred suppression of the pathogen. One of the biggest challenges for pathogens invading hosts is microbial symbionts but the role of pathogens in symbionts in nature is unknown. By tracking the dynamics of the entomopathogenic fungal Cordyceps javanica and symbionts in natural populations of the whitefly Bemisia tabaci from 2016 to 2021 across China, we reveal that Rickettsia, a newly invaded symbiont, is positively correlated with the pathogen in both frequency and density. We confirm that applying pathogen pressure can selectively drive Rickettsia to sudden fixation in whiteflies both in the laboratory and in the field. Furthermore, the driving force is elucidated by the Rickettsia-conferred suppression of pathogen infection quantity, proliferation and sporulation, acting as a potential barrier of onward transmission of the pathogen. These results show that pathogens are an important driving force for rapid shifts in host symbionts in the natural niche.
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