The family Testudinaceae and its intergeneric classification are poorly understood.This is due to overlap of morphological characteristics in genera and lack of DNA sequence data to infer phylogenetic relationships.Th...The family Testudinaceae and its intergeneric classification are poorly understood.This is due to overlap of morphological characteristics in genera and lack of DNA sequence data to infer phylogenetic relationships.The main objective of the present paper is to establish a novel genus,Muritestudina,based on distinct morphological characteristics and analyses of combined LSU,SSU,ITS,rpb2 and tef1 sequence data.We also fill the gap of our current knowledge on the phylogenetic position of Testudinaceae.Based on the morphological characteristics of species representing existing genera of Testudinaceae,we herein introduce a new genus,Muritestudina with M.chiangraiensis as the type species.The new genus is characterized by globose to subglobose,ostiolate ascomata;a peridium of brown to dark-brown cells of textura angularis;septate and cellular pseudoparaphyses;cylindric-clavate asci with a distinct pedicel;and hyaline,ellipsoidal and muriform ascospores.The new genus differs from the other genera in Testudinaceae in having hyaline,muriform ascospores.Combined analyses of ribosomal and protein coding gene sequence data confirmed that our new taxon belongs in Testudinaceae with a close relationship with Neotestudina rosatii.展开更多
Two coelomycetous taxa with muriform conidia were collected from Italy,and subjected to morpho-molecular taxonomic analyses.A mega blast search showed that the new taxa had a close relationship with Pseudocamarosporiu...Two coelomycetous taxa with muriform conidia were collected from Italy,and subjected to morpho-molecular taxonomic analyses.A mega blast search showed that the new taxa had a close relationship with Pseudocamarosporium.Maximum-likelihood and Bayesian analyses of combined LSU,SSU and ITS sequence data also showed that these strains reside in Didymosphaeriaceae and cluster with Pseudocamarosporium sensu stricto.Following detailed morphological and molecular analyses,these are introduced as new species in Pseudocamarosporium.The new taxa are illustrated and compared with other known species in the genus.展开更多
基金the National Research Council of Thailand(Mae Fah Luang University)for grants“Biodiversity,phylogeny and role of fungal endophytes of Pandanaceae”(Grant No.:592010200112).
文摘The family Testudinaceae and its intergeneric classification are poorly understood.This is due to overlap of morphological characteristics in genera and lack of DNA sequence data to infer phylogenetic relationships.The main objective of the present paper is to establish a novel genus,Muritestudina,based on distinct morphological characteristics and analyses of combined LSU,SSU,ITS,rpb2 and tef1 sequence data.We also fill the gap of our current knowledge on the phylogenetic position of Testudinaceae.Based on the morphological characteristics of species representing existing genera of Testudinaceae,we herein introduce a new genus,Muritestudina with M.chiangraiensis as the type species.The new genus is characterized by globose to subglobose,ostiolate ascomata;a peridium of brown to dark-brown cells of textura angularis;septate and cellular pseudoparaphyses;cylindric-clavate asci with a distinct pedicel;and hyaline,ellipsoidal and muriform ascospores.The new genus differs from the other genera in Testudinaceae in having hyaline,muriform ascospores.Combined analyses of ribosomal and protein coding gene sequence data confirmed that our new taxon belongs in Testudinaceae with a close relationship with Neotestudina rosatii.
基金the Mushroom Research Foundation(MRF),Chiang Rai Province,Thailand for providing a Postgraduate Scholarship and National Science Funding of China(no.31560489)the Chinese Academy of Sciences,project number 2013T2S0030,for the award of Visiting Professorship for Senior International Scientists at Kunming Institute of Botany.Erio Camporesi appreciates Giancarlo Lombardi for his invaluable help in the collecting programme and identifying host plants.Yong Wang and Yan-Ling An would like to thank the project of Science and Technology Department of Guizhou Province[2012]4012-06Further,we would like to thank Mae Fah Luang University grant for studying Dothideomycetes(no.56101020032).
文摘Two coelomycetous taxa with muriform conidia were collected from Italy,and subjected to morpho-molecular taxonomic analyses.A mega blast search showed that the new taxa had a close relationship with Pseudocamarosporium.Maximum-likelihood and Bayesian analyses of combined LSU,SSU and ITS sequence data also showed that these strains reside in Didymosphaeriaceae and cluster with Pseudocamarosporium sensu stricto.Following detailed morphological and molecular analyses,these are introduced as new species in Pseudocamarosporium.The new taxa are illustrated and compared with other known species in the genus.
