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烟粉虱(Bemisia tabaci)及其传播的双生病毒是全球性重大入侵生物,给农业生产造成了严重损失。媒介昆虫—病毒—植物互作是决定病害流行和昆虫种群动态的重要因子,但其在生物入侵中所起的作用一直未受到关注。入侵烟粉虱与双生病毒通过寄主植物所形成的间接互惠共生关系可能是其广泛入侵并取代土著近缘生物的一个重要生态机制。现已从植物生理变化、昆虫共生细菌生理功能和昆虫生理反应三个方面综合探讨这种互惠共生关系的生理机制及分子机制,以期深入揭示媒介昆虫与病毒互作在生物入侵中的作用,为发展高效的预警和治理技术体系提供理论基础。
Bemisia tabaci and its transmitted geminiviruses are global major invasive organisms, causing serious losses to agricultural production. Insect-virus-plant interaction is an important factor that determines the prevalence of disease and the dynamics of insect populations. However, its role in biological invasion has not been noticed. Indirect and reciprocal symbiotic relationships between invasive whitefly and geminiviruses via host plants may be an important ecological mechanism for their widespread invasion and replacement for indigenous relatives. The physiological mechanism and molecular mechanism of this reciprocal symbiotic relationship have been comprehensively explored from three aspects of plant physiological changes, the physiological functions of insect symbiotic bacteria and insect physiological responses. The purpose is to reveal the role of vector insects and viruses in biological invasion in depth. Provide a theoretical basis for developing efficient early warning and governance technology system.