菌毛在生防细菌定殖植物病原线虫中功能的研究进展

Research progress on the functions of fimbria in the colonization of phytopathogenic nematodes by biological control bacteria

植物病原线虫对林业生产危害严重,缺乏有效的防控措施,已造成巨大的经济损失。生防细菌已被用于林木病原线虫的绿色防控,并已取得良好的防治效果。然而,生防细菌防控林木线虫病害的作用机制尚不明确,严重阻碍了防线虫微生物制剂的研发与高效应用。目前,已有大量的研究结果证实,生防细菌在线虫上的定殖能力与其杀线防病效果密切相关,且细菌菌毛在生防细菌于线虫宿主的定殖过程中发挥着重要功能。本文综述了革兰氏阴性细菌菌毛的种类以及菌毛在生防细菌定殖线虫中的功能,讨论了生防细菌菌毛对运动性、黏附性、生物膜形成等定殖相关生物学性状的影响,并对菌毛在细菌防控林木线虫病害中功能的研究与应用进行了展望。

Plant pathogenic nematodes do serious harm to forestry production and lack of effective prevention and control measures,which has caused huge economic losses.Biocontrol bacteria have been used for green control of forest pathogenic nematodes,and good control results have been achieved.However,the mechanism of biocontrol bacteria in the prevention and control of forest nematode diseases is not clear,which seriously hinders the research and development and efficient application of nematode control microbial agents.At present,a large number of research results have confirmed that the colonization ability of biocontrol bacteria on nematodes is closely related to their efficacy of killing nematodes and preventing diseases,and bacterial fimbriae play an important role in the colonization of biocontrol bacteria to nematode hosts.In this paper,the types of Gram-negative bacterial fimbriae and their functions in biological control of bacterial colonization nematodes were reviewed,and the effects of biocontrol bacterial fimbriae on colonization-related biological characters such as movement,adhesion and biofilm formation were discussed.The research and application of fimbriae in the prevention and control of forest nematode diseases were prospected.