title: Global diversity and molecular systematics ofWrightoporias.l. (Russulales,Basidiomycota).
abstract: Wrightoporiaaccommodates polypores producing finely asperulate and amyloid basidiospores, and causing white rot. Thirty-nine species have been described or transferred to this genus; however, only a few species have been referred to molecular phylogeny. In this study, about 140 worldwide specimens ofWrightoporias.l. were studied morphologically, and ITS and/or nLSU regions from 37 samples, representing 19 species, were sequenced for phylogenetic analysis. Six clades ofWrightoporias.l. were recognized. TheWrightoporias.str. clade includesW. avellanea,W. lenta(the generic type) andW. subavellanea. Three clades segregating fromWrightoporias.str. were proposed separately as three new genera, namelyLarssoniporiagen. nov.,Pseudowrightoporiagen. nov. andWrightoporiopsisgen. nov. Two other clades were named afterAmylonotusandAmylosporus. According to phylogenetic and morphological evidence, species previously treated inWrightoporiawere transferred toAmylonotus,Amylosporusand the new genera, or were retained as members ofWrightoporias.l. because no good solution for these species could be found so far. In addition, one new species inLarssoniporia, three new species inPseudowrightoporiaand two new species inWrightoporiopsiswere described. Identification keys to the six genera and species inAmylonotus,Amylosporus,Larssoniporia,Pseudowrightoporia,WrightoporiaandWrightoporiopsisare provided, respectively.
authors.affiliation: Institute of Microbiology and Beijing Key Laboratory for Forest Pest Control, P.O.Box 61, Beijing Forestry University, Beijing 100083, China.
authors.forename: J J
authors.initials: JJ
authors.lastname: Chen
authors.affiliation: Institute of Microbiology and Beijing Key Laboratory for Forest Pest Control, P.O.Box 61, Beijing Forestry University, Beijing 100083, China.
authors.forename: B K
authors.initials: BK
authors.lastname: Cui
authors.affiliation: Institute of Microbiology and Beijing Key Laboratory for Forest Pest Control, P.O.Box 61, Beijing Forestry University, Beijing 100083, China.
authors.forename: Y C
authors.initials: YC
authors.lastname: Dai
keywords: ITS; nLSU; polypore; wood-inhabiting fungi 