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2006年在韩国松林土壤中分离出来一种稀有的丝孢菌(分离物CNU 120806)。该菌具有两种孢子,但是仅月型孢子能黏附于线虫虫体上,并感染线虫。该菌消耗线虫营养并生长出线虫虫体,形成新孢子,然后进行新的感染循环。基于形态和分子生物学特征,该菌被鉴定为Esteya vermicola,它是已经被报道过的首例松材线虫的内寄生菌。由于其高度侵染性,有希望成为防控毁灭性的松萎蔫病害的生防菌。生测表明,E.vermicola CBS115803在4～5d内就能感染致死几乎全部松材线虫,这是由于其产生了较多的月型孢子。研究还表明,应用该菌的配方具有防控松萎蔫病的生防商业化前景。
A rare hyphomycete isolated from Korean pine forests in 2006 (isolate CNU 120806). The fungus has two spores, but only the spore-shaped spores can adhere to the nematode worm and infect nematodes. The fungus consumes the nematode to nourish and grow nematode worms, form new spores, and then undergo a new infection cycle. Based on morphological and molecular biological features, the strain was identified as Esteya vermicola, the first parasitic endophyte of Pine wood nematode that has been reported. Due to its high infectivity, it is hoped that it will become a biocontrol agent against the devastating wilt disease. Bioassays showed that E.vermicola CBS115803 could infect almost all of the pine wood nematodes in 4 to 5 days, due to the production of more moon-shaped spores. The study also shows that the application of the bacteria formula has the prevention and control of pine wilt disease prevention commercial prospects.