Gilgado Fèlix, Gené Josepa, Cano Josep, Guarro Josep
Unitat de Microbiologia, Facultat de Medicina i Cièncias de la Salut, Universitat Rovira i Virgili, 43201 Reus, Tarragona, Spain.
Int J Syst Evol Microbiol. 2007 Sep;57(Pt 9):2171-2178. doi: 10.1099/ijs.0.64958-0.
During a biodiversity survey of Argentinian soil fungi, we recovered a rare Scedosporium-like fungus which was proven to be genetically and morphologically different from known species of Scedosporium (anamorph of Pseudallescheria) and relatives and is proposed here as representing a new genus. This genus is mainly characterized by producing sympodial conidia from denticulate conidiogenous cells. This isolate was morphologically identical to Graphium tectonae and thus the new combination Parascedosporium tectonae gen. nov., comb. nov. is proposed. Sequence analysis of four regions of three genes, i.e. beta-tubulin (two loci), calmodulin and the internal transcribed spacer region of the 5.8S rRNA, confirmed our proposal. Both the phylogenetic analysis and morphological studies excluded Pseudallescheria africana and Pseudallescheria fimeti from the genus Pseudallescheria. The former is proposed as a member of the new genus Petriellopsis, and the latter has been accommodated in Lophotrichus. The type strains of Parascedosporium tectonae gen. nov., comb. nov., Petriellopsis africana gen. nov., comb. nov. and Lophotrichus fimeti comb. nov. are respectively CBS 127.84(T), CBS 311.72(T) and CBS 129.78(T).
在对阿根廷土壤真菌进行生物多样性调查期间,我们发现了一种罕见的拟帚霉属真菌,经证实其在基因和形态上与帚霉属(拟阿利什霉的无性型)的已知物种及其近缘种不同,在此提议将其归为一个新属。该属的主要特征是从具细齿的产孢细胞产生合轴分生孢子。该分离株在形态上与柚木色串孢相同,因此提议建立新组合Parascedosporium tectonae gen. nov., comb. nov.。对三个基因的四个区域进行序列分析,即β-微管蛋白(两个位点)、钙调蛋白和5.8S rRNA的内转录间隔区,证实了我们的提议。系统发育分析和形态学研究均将非洲拟阿利什霉和粪拟阿利什霉排除在拟阿利什霉属之外。前者被提议作为新属Petriellopsis的成员,后者已被归入多枝孢属。新组合Parascedosporium tectonae gen. nov., comb. nov.、新组合Petriellopsis africana gen. nov., comb. nov.和新组合Lophotrichus fimeti的模式菌株分别为CBS 127.84(T)、CBS 311.72(T)和CBS 129.78(T)。