Saprobic Dothideomycetes in Thailand:Muritestudina gen.et sp.nov.(Testudinaceae)a new terrestrial pleosporalean ascomycete,with hyaline and muriform ascospores  

作　　者：Wanasinghe DN Jeewon R Tibpromma S Jones EBG Hyde KD 

机构地区：[1]Center of Excellence in Fungal Research,Mae Fah Luang University,Chiang Rai,57100,Thailand [2]Key Laboratory for Plant Diversity and Biogeography of East Asia,Kunming Institute of Botany,Chinese Academy of Science,Kunming 650201,Yunnan,People’s Republic of China [3]Department of Health Sciences,Faculty of Science,University of Mauritius,Reduit,Mauritius [4]Nantgaredig,33 B St.Edwards Road,Southsea,Hants,Hampshire PO53DH,UK

出　　处：《Studies in Fungi》2017年第1期219-234,共16页真菌研究（英文）

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).

摘　　要：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.

关 键 词：ASCOMYCOTA phylogeny PLEOSPORALES taxonomy 

分 类 号：Q94[生物学—植物学]