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松材线虫是重要的外来有害生物,造成松树大量死亡,带来严重的经济损失和生态破坏.松材线虫与伴生微生物存在密切的生态关系.本文综述了松材线虫伴生微生物的种类及其在松材线虫繁殖和致病过程中的重要生态作用,从微生态系统角度对松材线虫病进行探讨.伴生真菌能为松材线虫提供食物,维持松材线虫次生侵染循环,提高分散型第三龄幼虫在种群中的比例,利于松材线虫侵染扩散;伴生细菌能够提高松材线虫致病性,促进其繁殖,并有助于松材线虫降解松萜类物质,从而提高松材线虫的适应性.
Bursaphelenchus xylophilus is an important alien pest, causing a large number of pine trees to die, causing serious economic losses and ecological damage. Pine wood nematode and associated microorganisms have close ecological relationship.This paper reviews the species of pine wood nematode associated microorganisms and their Pine wood nematode reproduction and pathogenic process of the important ecological role from the microecological point of view of pine wilt disease concomitant fungi can provide food for the pine wood nematode to maintain the pine wood nematode secondary infection cycle to improve the dispersion Third instar larvae in the proportion of the population, which is conducive to the spread of Bursaphelenchus xylophilus; Associated bacteria can improve the pathogenicity of Bursaphelenchus xylophilus, and promote its reproduction, and help pine wood nematode degradation of pine terpenoids, thereby improving the pine Adaptability of nematodes.