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一种对松材线虫具有强感染性的内生真菌,esteyavermicola

DOI: 10.3969/j.jssn.1000-2006.2010.05.039, PP. 169-169

Keywords: 松材线虫,内寄生真菌,esteyavermicola,丝孢菌

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Abstract:

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cnu120806)。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esteyavermicola,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.vermicolacbs115803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。

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