Morphological and phylogenetic studies of Pleopunctum gen. nov. (Phaeoseptaceae, Pleosporales) from China

IF 10 1区生物学 Q1 MYCOLOGY

Mycosphere Pub Date : 2019-01-01 DOI:10.5943/mycosphere/10/1/17

N. Liu

引用次数: 14

Abstract

A new hyphomycete genus, Pleopunctum, is introduced to accommodate two new species, P. ellipsoideum sp. nov. (type species) and P. pseudoellipsoideum sp. nov., collected from decaying wood in Guizhou Province, China. The genus is characterized by macronematous, mononematous conidiophores, monoblastic conidiogenous cells and muriform, oval to ellipsoidal conidia often with a hyaline, elliptical to globose basal cell. Phylogenetic analyses of combined LSU, SSU, ITS and TEF1α sequence data of 55 taxa were carried out to infer their phylogenetic relationships. The new taxa formed a well-supported subclade in the family Phaeoseptaceae and basal to Lignosphaeria and Thyridaria macrostomoides. Divergence time estimation based on LSU, SSU and TEF1α sequence data was performed to provide additional evidence for the establishment of Phaeoseptaceae, which diverged approximately 88 MYA.

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中国Pleopunctum gen. 11 . (phaeoseptacae, Pleosporales)的形态与系统发育研究

本文介绍了一种新菌丝菌属Pleopunctum，以适应两种新种:P. ellipsoideum sp. nov(模式种)和P. pseudoellipsoideum sp. nov。该属的特点是:大孢子、单孢子分生孢子、单孢子分生细胞和多形的、卵形到椭球形的分生孢子，通常有一个透明的、椭圆形到球形的基细胞。对55个分类群的LSU、SSU、ITS和TEF1α组合序列数据进行系统发育分析，推测其系统发育关系。该新分类群在phaeoseptacae科中形成了一个支持良好的亚支系，位于Lignosphaeria和Thyridaria macrostomoides的基础上。基于LSU、SSU和TEF1α序列数据进行分化时间估计，为phaeoseptacae的建立提供了额外的证据，该科的分化时间约为88 MYA。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Mycosphere MYCOLOGY-

CiteScore

30.00

自引率

8.20%

发文量

审稿时长

4 weeks

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