title: Phylogeny and taxonomy of poroid and lamellate genera in the Auriculariales (Basidiomycota).
abstract: The phylogeny of taxa with poroid and lamellate hymenophores in Auriculariales as yet has not been well studied. Here we sequenced the nLSU and ITS regions of poroid and lamellate representatives from the genera Elmerina, Protodaedalea and Protomerulius to establish the phylogenetic position of these morphologically similar taxa. Our analyses suggest that (i) Elmerina foliacea is divergent from all other Elmerina species sampled; (ii) Protodaedalea hispida (the type of monotypic genus Protodaedalea) and Protomerulius efibulatus should be transferred to Elmerina as E. hispida and E. efibulata respectively; (iii) after exclusion of P. efibulatus, Protomerulius becomes monophyletic and represents the core of a "Protomerulius family" clade that potentially includes species from Tremellodendropsis, Heterochaetella and Protodontia; and (iv) the presence or absence of gloeocystidia serves as the most reliable morphological feature in delimiting Elmerina s.l. and Protomerulius. Concepts of Elmerina s.l. and Protomerulius are redefined, and diagnostic keys for these two genera are provided.
authors.affiliation: State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, P.R. China.
authors.forename: Li-Wei
authors.initials: LW
authors.lastname: Zhou
authors.forename: Yu-Cheng
authors.initials: YC
authors.lastname: Dai
mesh_terms: D001483:Base Sequence; D001487:Basidiomycota / Q000145:classification* / Q000166:cytology / Q000235:genetics; D004271:DNA, Fungal / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000737:chemistry / Q000235:genetics; D048690:Fruiting Bodies, Fungal; D008969:Molecular Sequence Data; D010802:Phylogeny; D017422:Sequence Analysis, DNA
chemical_list: D004271:DNA, Fungal; D004275:DNA, Ribosomal; D021903:DNA, Ribosomal Spacer
keywords: Auriculariaceae; Elmerina; ITS; Protodaedalea; Protomerulius; nLSU