【摘要】 昆虫体外共生菌是指能在体外与宿主发生互利共生关系的微生物。体外共生菌虽然不如肠道微生物那样普遍存在于昆虫中,但也在宿主生长发育过程中扮演着重要的角色。昆虫体外共生菌一般寄生于昆虫体表或体内特异器官(如储菌器),在特定时期转移到植物组织中。体外共生菌产生的挥发物能作为宿主定位寄主植物的信号物质,能为宿主提供生长发育所需的营养物质,还参与了宿主体外免疫。对昆虫体外共生菌的研究,不仅能进一步揭示昆虫与微生物之间的互作关系,丰富昆虫共生菌的研究,还能从共生菌的角度探索害虫引诱剂和昆虫免疫豁免机制。本文对昆虫体外共生菌寄生方式、传播途径、对宿主的影响等研究成果进行了综述,旨在为害虫综合防控提供新思路。更多还原

【Abstract】 Entomic ectosymbiotic microorganisms refer to the microorganisms that interact with host mutually in vitro. Although ectosymbiotic microorganisms are not as popular as gut microbes in insects, they also play important roles in the growth and development of their hosts. Commonly, entomic ectosymbiotic microorganisms are carried by host via the surface of skin or other organs like mycangi, and move into plant tissues in the specific developmental stage of host. Ectosymbiotic microorganisms emit volatile organic compounds to indicate the location of plants and provide nutrients for their symbiotic host, and even affect in vitro immunity of host insects. The studies on entomic ectosymbiotic microorganisms will advance the knowledge on the interactions between insects and microorganisms, diversify the research of insect symbionts, and uncover the mechanisms of ectosymbiotic microorganisms-mediated immune privilege in insects. In this article, we reviewed the studies of parasitic modes and transmission routes of ectosymbiotic microorganisms and their effects on insect hosts, aiming to provide new insights for integrated pest management.更多还原