{"title":"Families and genera of diaporthalean fungi associated with canker and dieback of tree hosts.","authors":"X L Fan, J D P Bezerra, C M Tian, P W Crous","doi":"10.3767/persoonia.2018.40.05","DOIUrl":null,"url":null,"abstract":"<p><p>In this study we accept 25 families in <i>Diaporthales</i> based on phylogenetic analyses using partial ITS, LSU, <i>rpb2</i> and <i>tef1-α</i> gene sequences. Four different families associated with canker and dieback of tree hosts are morphologically treated and phylogenetically compared. These include three new families (<i>Diaporthostomataceae</i>, <i>Pseudomelanconidaceae</i>, <i>Synnemasporellaceae</i>), and one new genus, <i>Dendrostoma</i> (<i>Erythrogloeaceae</i>). <i>Dendrostoma</i> is newly described from <i>Malus spectabilis</i>, <i>Osmanthus</i> <i>fragrans</i> and <i>Quercus</i> <i>acutissima</i> having fusoid to cylindrical, bicellular ascospores, with three new species namely <i>D. mali</i>, <i>D. osmanthi</i> and <i>D. quercinum</i>. <i>Diaporthostomataceae</i> is characterised by conical and discrete perithecia with bicellular, fusoid ascospores on branches of <i>Machilus leptophylla</i>. <i>Pseudomelanconidaceae</i> is defined by conidiogenous cells with apical collarets and discreet annellations, and the inconspicuous hyaline conidial sheath when mature on <i>Carya cathayensis</i>, compared to morphologically similar families <i>Melanconidaceae</i> and <i>Juglanconidaceae</i>. <i>Synnemasporellaceae</i> is proposed to accommodate fungi with synnematous conidiomata, with descriptions of <i>S. toxicodendri</i> on <i>Toxicodendron sylvestre</i> and <i>S. aculeans</i> on <i>Rhus copallina</i>.</p>","PeriodicalId":20014,"journal":{"name":"Persoonia","volume":null,"pages":null},"PeriodicalIF":9.5000,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3767/persoonia.2018.40.05","citationCount":"56","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Persoonia","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.3767/persoonia.2018.40.05","RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2018/2/6 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MYCOLOGY","Score":null,"Total":0}
引用次数: 56
Abstract
In this study we accept 25 families in Diaporthales based on phylogenetic analyses using partial ITS, LSU, rpb2 and tef1-α gene sequences. Four different families associated with canker and dieback of tree hosts are morphologically treated and phylogenetically compared. These include three new families (Diaporthostomataceae, Pseudomelanconidaceae, Synnemasporellaceae), and one new genus, Dendrostoma (Erythrogloeaceae). Dendrostoma is newly described from Malus spectabilis, Osmanthusfragrans and Quercusacutissima having fusoid to cylindrical, bicellular ascospores, with three new species namely D. mali, D. osmanthi and D. quercinum. Diaporthostomataceae is characterised by conical and discrete perithecia with bicellular, fusoid ascospores on branches of Machilus leptophylla. Pseudomelanconidaceae is defined by conidiogenous cells with apical collarets and discreet annellations, and the inconspicuous hyaline conidial sheath when mature on Carya cathayensis, compared to morphologically similar families Melanconidaceae and Juglanconidaceae. Synnemasporellaceae is proposed to accommodate fungi with synnematous conidiomata, with descriptions of S. toxicodendri on Toxicodendron sylvestre and S. aculeans on Rhus copallina.
期刊介绍:
Persoonia aspires to publish papers focusing on the molecular systematics and evolution of fungi. Additionally, it seeks to advance fungal taxonomy by employing a polythetic approach to elucidate the genuine phylogeny and relationships within the kingdom Fungi. The journal is dedicated to disseminating high-quality papers that unravel both known and novel fungal taxa at the DNA level. Moreover, it endeavors to provide fresh insights into evolutionary processes and relationships. The scope of papers considered encompasses research articles, along with topical and book reviews.