Laboratory for Conservation and Utilization of Bio-resources, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan University, Kunming, Yunnan 650091, PR China.
Mycologia. 2011 Jan-Feb;103(1):164-73. doi: 10.3852/10-102. Epub 2010 Aug 3.
A new anamorphic fungus is described based on four isolates from ascospores of Orbilia aff. luteorubella. This fungus differs from previously known Orbilia anamorphs in producing inversely pyramidal, unicellular conidia with several protuberances at their distal end. Conidia produce 1-7 prominent denticles that emerge from a node at the conidiophore apex. Conidiogenesis is holoblastic. Because phylogenetic analysis indicated greater than 90% ITS sequence similarities among the four isolates they are treated here as a single species. In the sequence analysis of the internal transcribed spacer region (ITS) these isolates and other sequences identified as O. aff. luteorubella were nested within Orbilia and formed a clade with 99% bootstrap support. This clade is separated from nematode-trapping species of Orbilia. Based on both morphological and molecular analyses, we propose a new genus, Pseudotripoconidium.
本文基于来自 Orbilia aff. luteorubella 子囊孢子的四个分离物描述了一种新的变形真菌。该真菌与先前已知的 Orbilia 无性型在产生倒金字塔形、单细胞分生孢子方面存在差异，分生孢子的末端有几个突起。分生孢子产生 1-7 个明显的齿突，从分生孢子梗顶端的节点突出。分生孢子发生是全壁的。由于系统发育分析表明四个分离物之间的 ITS 序列相似度大于 90%，因此在这里将它们视为一个单一的种。在内部转录间隔区（ITS）的序列分析中，这些分离物和其他鉴定为 Orbilia aff. luteorubella 的序列嵌套在 Orbilia 内，并与 99%的自举支持形成一个分支。该分支与线虫诱捕的 Orbilia 种分离。基于形态和分子分析，我们提出了一个新属，拟毛壳菌属。
