Põldmaa Kadri, Bills Gerald, Lewis David P, Tamm Heidi
Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, Lai 40, EE-51005 Tartu, Estonia.
Texas Therapeutics Institute, The Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, 1881 East Road, 3SCR6.4676, Houston, TX 77054, USA.
Mycol Prog. 2019 Feb;18(1-2):77-89. doi: 10.1007/s11557-018-01468-w. Epub 2019 Jan 23.
Three new species, closely related to , are described from the USA and India. These species form septate conidia from simple conidiophores with individual branches terminating in a single phialide and chlamydospores. Teleomorphs, known for and , are characterised by hairy perithecia and fusiform, apiculate, and conspicuously warted ascospores. This combination of characters distinguishes the -group from other members of that all form gliocladium-type anamorphs and mostly grow on basidiomata of spp. Like in other species of the genus, the majority of hosts of the species described in this paper belong to wood-inhabiting taxa of Russulales. had been recorded from a few regions in Europe and exclusively on Herein, it is reported also from in many other localities and on s.l. at the foothills of the Himalayas. Its sister species, found in the same region in northern India on another member of Russulales (, is described as The two species described from North America colonize polypores from various taxa. Whereas occurs in eastern USA, with among its hosts, is so far known only from two locations in eastern Texas, growing on (Polyporales). Despite their great similarity in morphology and ITS rDNA, TEF1 sequences clearly distinguish these two North-American species. Moreover, the two strains of appeared metabolically distinct as their organic extracts strongly inhibited the growth of human pathogenic microbes grown in vitro. Phylogenetic analysis of rDNA sequences supports monophyly of the genus and the included -group, established here.
从美国和印度描述了三个与……密切相关的新物种。这些物种从具有单个分支且末端为单个瓶梗的简单分生孢子梗形成分隔的分生孢子和厚垣孢子。已知……的有性型，其特征是具毛的子囊壳以及梭形、具细尖且明显具疣的子囊孢子。这种特征组合将……类群与……的其他成员区分开来，后者均形成粘帚霉型无性型，且大多生长在……属物种的担子果上。与该属的其他物种一样，本文描述的物种的大多数寄主属于红菇目的木生类群。……已在欧洲的一些地区被记录到，且仅生长在……上。在此，它也在许多其他地区的……以及喜马拉雅山山麓的广义……上被报道。它的姊妹种，在印度北部同一地区的红菇目另一成员（……）上被发现，被描述为……。从北美描述的这两个物种定殖于来自不同类群的多孔菌上。其中……出现在美国东部，其寄主中有……，而……目前仅在得克萨斯州东部的两个地点被发现，生长在……（多孔菌目）上。尽管它们在形态和ITS rDNA上非常相似，但TEF1序列清楚地区分了这两个北美物种。此外，……的两个菌株在代谢上表现出差异，因为它们的有机提取物强烈抑制体外培养的人类致病微生物的生长。rDNA序列的系统发育分析支持……属以及在此确立的包含……的类群的单系性。
