Towards a natural classification of Annulatascaceae-like taxa;introducing Atractosporales ***. and six new families
作者单位：Yunnan Institute of Food Safety Kunming University of Science & Technology Center of Excellence for Fungal Research Mae Fah Luang University Department of Crop Sciences College of Agricultural and Marine Sciences Sultan Qaboos University Formerly at Department of Botany Goa University Faculty of Environmental Science & Engineering Kunming University of Science & Technology
会议名称：《中国菌物学会第七届全国会员代表大会暨2017年学术年会》
会议日期：2017年
学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学]
关 键 词：Diaportheomycetidae Phylogeny Ring Sexual states Submerged wood
摘 要：Species that has black ascomata with long necks, unitunicate, cylindrical asci with apical rings and fusiform, hyaline ascospores with or without mucilaginous sheaths are common in freshwater habitats in tropical and temperate areas. Many of these taxa have originally been recorded as Annulatascaceae-like taxa. Twenty genera have been included in Annulatascaceae mostly by morphological characters, but molecular work and phylogenetic analyses are generally lacking. In this study, nine new Annulatascaceae-like taxa collected from Thailand were morphologically *** cultures obtained from single spores were used in molecular studies. Nine new strains and other known strains of Sordariomycetes species were used to establish a phylogenetic tree and evolution tree based on combined LSU, SSU, ITS and RPB2 sequence data. Phylogenetic analyses show that one new order Atractosporales and six new families are introduced to accommodate taxa excluded from Annulatascaceae sensu stricto. A new order Atractosporales is established based on the molecular study, including three newly built families Conlariaceae, Pseudoproboscisporaceae and Atractosporaceae. Conlariaceae is introduced for genus Conlaria which comprises two species,Conlaria duplumascospora and a new coelomycetous asexual morph taxon Conlarium aquaticum which shows subglobose or irregular, brown, clathrate, muriform conidia. Pseudoproboscisporaceae includes Pseudoproboscispora and Diluviicola, while Atractosporaceae includes the genera Rubellisphaeria and Atractospora. Three genera Barbatosphaeria, Xylomelasma and Ceratostomella form a stable clade which is introduced as a new family Barbatosphaeriaceae in Diaportheomycetidae,families incertae sedis. A new family Lentomitellaceae is introduced in Diaportheomycetidae, families incertae sedis, to accommodate the genus Lentomitella. Woswasiaceae is introduced to accommodate Woswasia, Xylochrysis and Cyanoannulus in Diaportheomycetidae, families incertae sedis. Thre