植物次生代谢物质对烟粉虱的生物活性及作用机理研究

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中图分类号：S433 文献标识码：A文章编号：2097-1354（2025）06-0013-09

Abstract： The control of Bemisia tabaci is challenging due to its strong reproductive ability， wide host range，and propensity to develop resistance. In production，chemical pesticides are commonly used to control whiteflies，but their widespread use has led to issues such as resistance，resurgence，and residue，which in turn negatively impact human health and the environment，becoming a global challenge that urgently needs to be addressed. Plant-derived secondary metabolites have emerged as an important strategy for green control of B . tabaci due to their novel targets and safety to non-target organisms. This paper reviews the biological characteristics of B.tabaci，analyzes the challenges of chemical pesticide control，and explores the insecticidal activity and mechanisms of plant-derived secondary metabolites. The research finds that coumarin compounds exhibit significant toxicity by regulating calcium ion channel activity and inhibiting acetylcholinesterase activity. Alkaloids mainly interfere with acetylcholine receptors and detoxifying enzymes，thus inhibiting the physiological functions of B. tabaci. The development of plant-derived pesticides faces challenges such as low yield and poor stability. Through continuous progress in areas such as compound development，mechanism research， functional group modification and formulation optimization， plant secondary metabolites are expected to provide green，safe，and effective solutions for control of B.tabaci.

Key words：Bemisia tabaci； plant secondary metabolites; insecticidal mechanisms

1烟粉虱的生物学特征及防治难点

烟粉虱（Bemisia tabaciGennadius）属于半翅目（Hemiptera）粉虱科（Aleyrodidae）[1]。（剩余13130字）