摘要
Species and generic recognition in the order Xylariales has been uncertain due to lack of molecular data from authentic cultures,as well as overlapping morphological characteristics.In this study,we revise the families Graphostromataceae,Hypoxylaceae,Lopadostomataceae and Xylariaceae in Xylariales.Our study is based on DNA sequence data derived from living cultures of fresh isolates,data from GenBank and morphological observation of type and worldwide herbarium specimens.We also collected new specimens from Germany,Italy and Thailand.Combined analyses of ITS,LSU,RPB2 and b-tubulin sequence data were used to reconstruct the molecular phylogeny of the above families.Generic and familiar boundaries between these families are revised and presented in an updated combined phylogenetic tree.We accept six genera in Graphostromataceae,19 genera in Hypoxylaceae,four in Lopadostomataceae and 37 genera in Xylariaceae.Five genera previously treated in Xylariaceae are placed in Amphisphaeriales genera incertae sedis and seven genera are placed in Xylariales genera incertae sedis.Two genera are placed in Sordariomycetes genera incertae sedis,while four genera are placed as Xylariomycetidae genera incertae sedis.Three genera are considered as doubtful.Barrmaelia and Cannonia,presently included in Xylariaceae are transferred to Diatrypaceae and Coniochaetales respectively,based on their morphology and phylogeny.Areolospora and Myconeesia are excluded from Xylariaceae and synonymized with Phaeosporis and Anthostomella respectively.Updated descriptions and illustrations are provided for all taxa with notes provided on each genus.Excluded and doubtful genera are listed with notes on their taxonomy and phylogeny.Taxonomic keys are provided for all revised families with morphological details for genera within the families.
基金
s The authors appreciate the financial support and postgraduate scholarship provided by State Key Laboratory of Mycology,Institute of Microbiology,Chinese Academy of Sciences,Beijing,China and Mushroom Research Foundation,Chiang Mai,Thailand.National Research Council of Thailand(Mae Fah Luang University)for a grants“Biodiversity,phylogeny and role of fungal endophytes of Pandanaceae”(Grant No.:592010200112)
Thailand Research Fund(TRF)entitled“Biodiversity,phylogeny and role of fungal endophytes on above parts of Rhizophora apiculata and Nypa fruticans”(Grant no RSA5980068)
National Research Council of Thailand(Mae Fah Luang University)entitled“Diseases of mangrove trees and maintenance of good forestry practice”(Grant no 60201000201)are thanked for the financial support.Authors extend their grateful acknowledgment to PDD,S,B,BISH,IMI,K,IFRD,PH,BRIP,E,MEXU,NY,UPS,TROM and all other herbaria for kindly loaning the herbarium material for the study.C.Suraweera,N.P Daranagama,V.K.Daranagama,and Ruvishika Jayewardene are also thanked for the support provided during the preparation of this manuscript.Lucy Wendt is thanked for the critical reading of part of this manuscript and Jaques Fournier is thanked for the specimens.
