{"title":"重论冠孢、外孢和Helminthosporium——新种和属的再分类","authors":"H. Voglmayr , W.M. Jaklitsch","doi":"10.1016/j.simyco.2017.05.001","DOIUrl":null,"url":null,"abstract":"<div><p>Molecular phylogenetic analyses of a multigene matrix of partial nuSSU-ITS-LSU rDNA, <em>rpb2</em> and <em>tef1</em> sequences were performed to investigate the phylogenetic relationships of <em>Corynespora</em>, <em>Exosporium</em> and <em>Helminthosporium</em> species. Based on phylogenetic analyses and morphology, the genus <em>Exosporium</em> is synonymised with <em>Helminthosporium</em>, and the genus <em>Corynespora</em> is revealed as polyphyletic. <em>Corynespora smithii</em> is confirmed to be closely related to the generic type <em>C. cassiicola</em> and its morphology is described and illustrated. <em>Exosporium tiliae</em>, <em>Corynespora caespitosa</em>, <em>C. endiandrae</em>, <em>C. leucadendri</em> and <em>C. olivacea</em> are recognised in <em>Helminthosporium</em>, and <em>Splanchnonema quercicola</em> and <em>S. kalakadense</em> are combined in <em>Helminthosporium</em>. Based on pure culture studies and DNA sequence data, <em>Massaria heterospora</em> and <em>Massarinula italica</em> are shown to be the sexual morphs of <em>Helminthosporium tiliae</em> and <em>H. microsorum</em>, respectively. European accessions of <em>Splanchnonema quercicola</em> are recognised to differ from the North American type and are described as <em>Helminthosporium quercinum</em>. The sexual morph of <em>H. oligosporum</em> is recorded and described for the first time. The generic type of <em>Helminthosporium</em>, <em>H. velutinum</em>, is epitypified with a recent collection from the type host, <em>Fagus sylvatica</em>. Based on sequence data, <em>Helminthosporium genistae</em> is recognised as a distinct species. Several species for which subperidermal stromata have been reported are shown to be fungicolous on <em>Diaporthales</em>, the “stromata” representing aborted and transformed host stromata or conidiomata: <em>H. caespitosum</em>, <em>H. microsorum</em>, <em>H. quercicola</em> and <em>H. quercinum</em> on <em>Coryneum</em> spp.; <em>H. hispanicum</em> on conidiomata of <em>Juglanconis juglandina</em>; <em>H. juglandinum</em> on conidiomata of <em>Diaporthe</em> sp.; <em>H. oligosporum</em> and <em>H. tiliae</em> on <em>Hercospora tiliae</em>. The newly described <em>H. austriacum</em> is fungicolous on <em>Amphisphaeria</em> cf. <em>millepunctata</em> (<em>Xylariales</em>).</p></div>","PeriodicalId":22036,"journal":{"name":"Studies in Mycology","volume":null,"pages":null},"PeriodicalIF":14.1000,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.simyco.2017.05.001","citationCount":"44","resultStr":"{\"title\":\"Corynespora, Exosporium and Helminthosporium revisited – New species and generic reclassification\",\"authors\":\"H. Voglmayr , W.M. Jaklitsch\",\"doi\":\"10.1016/j.simyco.2017.05.001\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Molecular phylogenetic analyses of a multigene matrix of partial nuSSU-ITS-LSU rDNA, <em>rpb2</em> and <em>tef1</em> sequences were performed to investigate the phylogenetic relationships of <em>Corynespora</em>, <em>Exosporium</em> and <em>Helminthosporium</em> species. Based on phylogenetic analyses and morphology, the genus <em>Exosporium</em> is synonymised with <em>Helminthosporium</em>, and the genus <em>Corynespora</em> is revealed as polyphyletic. <em>Corynespora smithii</em> is confirmed to be closely related to the generic type <em>C. cassiicola</em> and its morphology is described and illustrated. <em>Exosporium tiliae</em>, <em>Corynespora caespitosa</em>, <em>C. endiandrae</em>, <em>C. leucadendri</em> and <em>C. olivacea</em> are recognised in <em>Helminthosporium</em>, and <em>Splanchnonema quercicola</em> and <em>S. kalakadense</em> are combined in <em>Helminthosporium</em>. Based on pure culture studies and DNA sequence data, <em>Massaria heterospora</em> and <em>Massarinula italica</em> are shown to be the sexual morphs of <em>Helminthosporium tiliae</em> and <em>H. microsorum</em>, respectively. European accessions of <em>Splanchnonema quercicola</em> are recognised to differ from the North American type and are described as <em>Helminthosporium quercinum</em>. The sexual morph of <em>H. oligosporum</em> is recorded and described for the first time. The generic type of <em>Helminthosporium</em>, <em>H. velutinum</em>, is epitypified with a recent collection from the type host, <em>Fagus sylvatica</em>. Based on sequence data, <em>Helminthosporium genistae</em> is recognised as a distinct species. Several species for which subperidermal stromata have been reported are shown to be fungicolous on <em>Diaporthales</em>, the “stromata” representing aborted and transformed host stromata or conidiomata: <em>H. caespitosum</em>, <em>H. microsorum</em>, <em>H. quercicola</em> and <em>H. quercinum</em> on <em>Coryneum</em> spp.; <em>H. hispanicum</em> on conidiomata of <em>Juglanconis juglandina</em>; <em>H. juglandinum</em> on conidiomata of <em>Diaporthe</em> sp.; <em>H. oligosporum</em> and <em>H. tiliae</em> on <em>Hercospora tiliae</em>. The newly described <em>H. austriacum</em> is fungicolous on <em>Amphisphaeria</em> cf. <em>millepunctata</em> (<em>Xylariales</em>).</p></div>\",\"PeriodicalId\":22036,\"journal\":{\"name\":\"Studies in Mycology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":14.1000,\"publicationDate\":\"2017-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/j.simyco.2017.05.001\",\"citationCount\":\"44\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Studies in Mycology\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0166061617300210\",\"RegionNum\":1,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MYCOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Studies in Mycology","FirstCategoryId":"99","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0166061617300210","RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MYCOLOGY","Score":null,"Total":0}
Corynespora, Exosporium and Helminthosporium revisited – New species and generic reclassification
Molecular phylogenetic analyses of a multigene matrix of partial nuSSU-ITS-LSU rDNA, rpb2 and tef1 sequences were performed to investigate the phylogenetic relationships of Corynespora, Exosporium and Helminthosporium species. Based on phylogenetic analyses and morphology, the genus Exosporium is synonymised with Helminthosporium, and the genus Corynespora is revealed as polyphyletic. Corynespora smithii is confirmed to be closely related to the generic type C. cassiicola and its morphology is described and illustrated. Exosporium tiliae, Corynespora caespitosa, C. endiandrae, C. leucadendri and C. olivacea are recognised in Helminthosporium, and Splanchnonema quercicola and S. kalakadense are combined in Helminthosporium. Based on pure culture studies and DNA sequence data, Massaria heterospora and Massarinula italica are shown to be the sexual morphs of Helminthosporium tiliae and H. microsorum, respectively. European accessions of Splanchnonema quercicola are recognised to differ from the North American type and are described as Helminthosporium quercinum. The sexual morph of H. oligosporum is recorded and described for the first time. The generic type of Helminthosporium, H. velutinum, is epitypified with a recent collection from the type host, Fagus sylvatica. Based on sequence data, Helminthosporium genistae is recognised as a distinct species. Several species for which subperidermal stromata have been reported are shown to be fungicolous on Diaporthales, the “stromata” representing aborted and transformed host stromata or conidiomata: H. caespitosum, H. microsorum, H. quercicola and H. quercinum on Coryneum spp.; H. hispanicum on conidiomata of Juglanconis juglandina; H. juglandinum on conidiomata of Diaporthe sp.; H. oligosporum and H. tiliae on Hercospora tiliae. The newly described H. austriacum is fungicolous on Amphisphaeria cf. millepunctata (Xylariales).
期刊介绍:
The international journal Studies in Mycology focuses on advancing the understanding of filamentous fungi, yeasts, and various aspects of mycology. It publishes comprehensive systematic monographs as well as topical issues covering a wide range of subjects including biotechnology, ecology, molecular biology, pathology, and systematics. This Open-Access journal offers unrestricted access to its content.
Each issue of Studies in Mycology consists of around 5 to 6 papers, either in the form of monographs or special focused topics. Unlike traditional length restrictions, the journal encourages submissions of manuscripts with a minimum of 50 A4 pages in print. This ensures a thorough exploration and presentation of the research findings, maximizing the depth of the published work.