Hypochnicium sensu lato (Polyporales, Basidiomycota) from Japan, with descriptions of a new genus and three new species.

IF 1.5 4区生物学 Q4 MYCOLOGY

Mycoscience Pub Date : 2023-01-31 eCollection Date: 2023-01-01 DOI:10.47371/mycosci.2022.10.001

Nitaro Maekawa, Ryo Sugawara, Hiroki Kogi, Shungo Norikura, Kozue Sotome, Naoki Endo, Akira Nakagiri, Shuji Ushijima

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Abstract

Species of Hypochnicium (Polyporales, Basidiomycota) collected from Japan were studied on their taxonomy by morphological and phylogenetic approaches. Phylogenetic analyses based on a nrDNA LSU and ITS dataset including the Japanese specimens and other publicly available ones show that Hypochnicium is polyphyletic. Since the clade containing the type species H. bombycinum was well-supported, we defined this clade as Hypochnicium s. str., and emended Hypochnicium to include restricted taxa with only smooth basidiospores. The new genus Neohypochnicium is proposed to accommodate the remaining taxa excluded from the genus Hypochnicium s. str., which includes both species with smooth basidiospores and ornamented ones. Three new species, Gyrophanopsis japonica, N. asiaticum and N. perlongicystidiosum are described and illustrated based on morphological and phylogenetic analyses using an ITS region dataset. In addition, the following 15 new combinations are proposed: N. albostramineum, N. aotearoae, N. capitulateum, N. cremicolor, N. cystidiatum, N. geogenium, N. guineense, N. huinayense, N. michelii, N. microsporum, N. patagonicum, N. pini, N. punctulatum, N. subrigescens and N. wakefieldiae. An identification key to Japanese species of Bulbillomyces, Gyrophanopsis, Hypochnicium and Neohypochnicium is provided.

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来自日本的 Hypochnicium sensu lato（多孔菌目，担子菌科），并描述了一个新属和三个新种。

通过形态学和系统发生学方法研究了从日本采集的Hypochnicium（多孔菌目，担子菌科）物种的分类。基于 nrDNA LSU 和 ITS 数据集（包括日本标本和其他公开发表的标本）的系统发生学分析表明，Hypochnicium 具有多型性。由于包含模式种 H. bombycinum 的支系得到了很好的支持，我们将该支系定义为 Hypochnicium s. str.新属 Neohypochnicium 的提出是为了容纳从 Hypochnicium s. str. 属中排除的其余类群，其中包括具有光滑基生孢子和装饰性基生孢子的物种。基于形态学和使用 ITS 区域数据集的系统发生学分析，描述并说明了三个新种：Gyrophanopsis japonica、N. asiaticum 和 N. perlongicystidiosum。此外，还提出了以下 15 个新组合：N. albostramineum、N. aotearoae、N. capitulateum、N. cremicolor、N. cystidiatum、N. geogenium、N. guineense、N. huinayense、N. michelii、N. microsporum、N. patagonicum、N. pini、N. punctulatum、N. subrigescens 和 N. wakefieldiae。提供了日本球茎酵母菌、石膏酵母菌、Hypochnicium 和 Neohypochnicium 的识别要点。

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来源期刊

Mycoscience MYCOLOGY-

CiteScore

3.00

自引率

7.10%

发文量

审稿时长

3 months

期刊介绍： Mycoscience is the official English-language journal of the Mycological Society of Japan and is issued bimonthly. Mycoscience publishes original research articles and reviews on various topics related to fungi including yeasts and other organisms that have traditionally been studied by mycologists. The research areas covered by Mycoscience extend from such purely scientific fields as systematics, evolution, phylogeny, morphology, ecology, physiology, biochemistry, genetics, and molecular biology, to agricultural, medical, and industrial applications. New and improved applications of well-established mycological techniques and methods are also covered.