A phylogenetic and taxonomic re-evaluation of the Bipolaris - Cochliobolus - Curvularia Complex  

作　　者：Dimuthu S.Manamgoda Lei Cai Eric H.C.McKenzie Pedro W.Crous Hugo Madrid Ekachai Chukeatirote Roger G.Shivas Yu Pei Tan Kevin D.Hyde 

机构地区：[1]Institute of Excellence in Fungal Research,Mae Fah Luang University,Chiang Rai 57100,Thailand [2]School of Science,Mae Fah Luang University,Chiang Rai 57100,Thailand [3]State Key Laboratory of Mycology,Institute of Microbiology,Chinese Academy of Sciences,Beijing 100190,People’s Republic of China [4]Landcare Research,Private Bag 92170,Auckland,New Zealand [5]CBS-KNAW Fungal Biodiversity Centre,Uppsalalaan 8,3584 CT Utrecht,Netherlands [6]Department of Agriculture,Fisheries and Forestry,Plant Pathology Herbarium(BRIP),Plant Biosecurity Science,GPO Box 267,Brisbane,QLD 4001,Australia

出　　处：《Fungal Diversity》2012年第5期131-144,共14页真菌多样性（英文）

基　　金：funded by China NSFC(31110103906);CAS(KSCX2-YW-Z-1026);Thailand Research Fund BRG528002.

摘　　要：Three genera,Cochliobolus,Bipolaris and Curvularia form a complex that contains many plant pathogens,mostly on grasses(Poaceae)with a worldwide distribution.The taxonomy of this complex is confusing as frequent nomenclatural changes and refinements have occurred.There is no clear morphological boundary between the asexual genera Bipolaris and Curvularia,and some species show intermediate morphology.We investigated this complex based on a set of ex-type cultures and collections from northern Thailand.Combined gene analysis of rDNA ITS(internal transcribed spacer),GPDH(glyceraldehyde 3-phosphate dehydrogenase),LSU(large subunit)and EF1-α(translation elongation factor 1-α)shows that this generic complex divides into two groups.Bipolaris and Cochliobolus species clustered in Group 1 along with their type species,whereas Curvularia species(including species named as Bipolaris,Cochliobolus and Curvularia)clustered in Group 2,with its generic type.The nomenclatural conflict in this complex is resolved giving priority to the more commonly used established generic names Bipolaris and Curvularia.Modern descriptions of the genera Bipolaris and Curvularia are provided and species resolved in this study are transferred to one of these genera based on their phylogeny.

关 键 词：ANAMORPH Generic complex NEOTYPE Nomenclature Pathogens Pseudocochliobolus 

分 类 号：Q94[生物学—植物学]