Institute of Microbiology of the ASCR, v. v. i., Vídeňská 1083, 142 20, Prague 4, Czech Republic,
Microb Ecol. 2013 Oct;66(3):682-700. doi: 10.1007/s00248-013-0228-x. Epub 2013 Apr 27.
Fungi from the genus Geosmithia (Ascomycota: Hypocreales) are associated with bark beetles (Coleoptera: Scolytinae), though little is known about ecology, diversity, and distribution of these fungi across beetle and its host tree species. This study surveyed the diversity, distribution and vector affinity of Geosmithia isolated from subcortical insects that colonized trees from the family Pinaceae in Central and Northeastern Europe. Twelve Geosmithia species were isolated from 85 plant samples associated with 23 subcortical insect species (including 14 bark beetle species). Geosmithia community composition was similar across different localities and vector species; although the fungal communities associated with insects that colonized Pinus differed from that colonizing other tree species (Abies, Larix, and Picea). Ten Geosmithia species from four independent phylogenetic lineages were not reported previously from vectors feeding on other plant families and seem to be restricted to the vectors from Pinaceae only. We conclude that presence of such substrate specificity suggests a long and stable association between Geosmithia and bark beetles.
地衣孢属真菌（子囊菌门：Hypocreales）与树皮甲虫（鞘翅目：小蠹科）有关，尽管人们对这些真菌在甲虫及其宿主树种中的生态、多样性和分布知之甚少。本研究调查了从中欧和东欧针叶树科树木中定殖的皮层下昆虫中分离出的地衣孢属真菌的多样性、分布和媒介亲和力。从 85 个与 23 种皮层下昆虫（包括 14 种树皮甲虫）相关的植物样本中分离出 12 种地衣孢属真菌。不同地点和媒介物种的地衣孢属群落组成相似；尽管与定殖于松树的昆虫相关的真菌群落与定殖于其他树种（云杉、落叶松和冷杉）的昆虫不同。来自四个独立系统发育谱系的 10 种地衣孢属真菌以前从未从其他植物科的取食媒介中报道过，似乎仅局限于松科的媒介。我们得出的结论是，这种底物特异性的存在表明地衣孢属真菌与树皮甲虫之间存在长期而稳定的联系。
