{"title":"<i>Hypochnicium</i> sensu lato (<i>Polyporales</i>, <i>Basidiomycota</i>) from Japan, with descriptions of a new genus and three new species.","authors":"Nitaro Maekawa, Ryo Sugawara, Hiroki Kogi, Shungo Norikura, Kozue Sotome, Naoki Endo, Akira Nakagiri, Shuji Ushijima","doi":"10.47371/mycosci.2022.10.001","DOIUrl":null,"url":null,"abstract":"<p><p>Species of <i>Hypochnicium</i> (<i>Polyporales</i>, <i>Basidiomycota</i>) 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 <i>Hypochnicium</i> is polyphyletic. Since the clade containing the type species <i>H. bombycinum</i> was well-supported, we defined this clade as <i>Hypochnicium</i> s. str., and emended <i>Hypochnicium</i> to include restricted taxa with only smooth basidiospores. The new genus <i>Neohypochnicium</i> is proposed to accommodate the remaining taxa excluded from the genus <i>Hypochnicium</i> s. str., which includes both species with smooth basidiospores and ornamented ones. Three new species, <i>Gyrophanopsis japonica</i>, <i>N. asiaticum</i> and <i>N. perlongicystidiosum</i> are described and illustrated based on morphological and phylogenetic analyses using an ITS region dataset. In addition, the following 15 new combinations are proposed: <i>N. albostramineum</i>, <i>N. aotearoae</i>, <i>N. capitulateum</i>, <i>N. cremicolor</i>, <i>N. cystidiatum</i>, <i>N. geogenium</i>, <i>N. guineense</i>, <i>N. huinayense</i>, <i>N. michelii</i>, <i>N. microsporum</i>, <i>N. patagonicum</i>, <i>N. pini</i>, <i>N. punctulatum</i>, <i>N. subrigescens</i> and <i>N. wakefieldiae</i>. An identification key to Japanese species of <i>Bulbillomyces</i>, <i>Gyrophanopsis</i>, <i>Hypochnicium</i> and <i>Neohypochnicium</i> is provided.</p>","PeriodicalId":18780,"journal":{"name":"Mycoscience","volume":"64 1","pages":"19-34"},"PeriodicalIF":1.5000,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/c1/3f/MYC-64-019.PMC10042306.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mycoscience","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.47371/mycosci.2022.10.001","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2023/1/1 0:00:00","PubModel":"eCollection","JCR":"Q4","JCRName":"MYCOLOGY","Score":null,"Total":0}
引用次数: 0
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.
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.