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Type: Article
Published: 2014-08-20
Page range: 213–218
Abstract views: 15
PDF downloaded: 10

A new species of Microthyrium from Yunnan, China 

International Fungal Research and Development Centre, Key Laboratory of Resource Insect Cultivation & Utilization State Forestry Administration The Research Institute of Resource Insects, Chinese Academy of Forestry Kunming 650224, PR China
International Fungal Research and Development Centre, Key Laboratory of Resource Insect Cultivation & Utilization State Forestry Administration The Research Institute of Resource Insects, Chinese Academy of Forestry Kunming 650224, PR China
School of Science, Mae Fah Luang University Tasud, Muang, Chiang Rai 57100, Thailand
School of Science, Mae Fah Luang University Tasud, Muang, Chiang Rai 57100, Thailand
International Fungal Research and Development Centre, Key Laboratory of Resource Insect Cultivation & Utilization State Forestry Administration The Research Institute of Resource Insects, Chinese Academy of Forestry Kunming 650224, PR China
International Fungal Research and Development Centre, Key Laboratory of Resource Insect Cultivation & Utilization State Forestry Administration The Research Institute of Resource Insects, Chinese Academy of Forestry Kunming 650224, PR China School of Science, Mae Fah Luang University Tasud, Muang, Chiang Rai 57100, Thailand Botany and Microbiology Department, College of Science, King Saud University, Riyadh 11442, Saudi Arabia
Microthyriaceae phylogeny taxonomy

Abstract

A new species, Microthyrium propagulensis, collected in Yunnan Province, southwestern China is introduced. The species is typical of Microthyriaceae (Microthyriales) in having superficial thyriothecia with a poorly developed basal layer and a prominent darker central ostiole, bitunicate asci and 1-septate ascospores. It is similar to the generic type, M. microscopicum, but differs in having relatively small ascospores, with two apical cilia, which lie downloads from the ascospore apex at a 45° angle. Phylogenetic analysis based on combined LSU and SSU gene sequence data clearly place this species in Microthyrium, but distinguishes it from Microthyrium microscopicum. This second sequence from a Microthyrium species indicates that the putative sequence of the type of this genus is CBS has been correctly named and supports the distinctiveness of Microthyriales and Microthyriaceae.