title: Morphological and molecular evidence for two new species of Laetiporus (Basidiomycota, Polyporales) from southwestern China.
abstract: Two Laetiporus species, L. ailaoshanensis and L. zonatus spp. nov., are described from southwestern China based on morphological and molecular characters. Laetiporus ailaoshanensis is characterized by orange-yellow to reddish orange pileal surface and cream to buff pores when fresh, azonate to faintly zonate pileus, ovoid to ellipsoid basidiospores (5.0-6.2 × 4.0-5.0 μm), and it has been observed only on Lithocarpus. Laetiporus zonatus is characterized by white to cream pileal surface with buff to clay-buff base when fresh, concentrically zonate basidiocarps, ellipsoid to pyriform or drop-shaped basidiospores (5.8-7.2 × 4.3-5.5 μm), and it has been found only on Quercus. The phylogenetic relationships of all recognized Laetiporus species were inferred from a combined dataset of ITS and nLSU-rDNA sequences, and L. ailaoshanensis and L. zonatus represent two new lineages in this group.
authors.affiliation: Institute of Microbiology, Beijing Forestry University, Beijing 100083, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Song
authors.affiliation: Institute of Microbiology, Beijing Forestry University, Beijing 100083, China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Institute of Microbiology, Beijing Forestry University, Beijing 100083, China baokaicui2013@gmail.com.
authors.forename: Baokai
authors.initials: B
authors.lastname: Cui
authors.affiliation: College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201, China.
authors.forename: Honggao
authors.initials: H
authors.lastname: Liu
authors.affiliation: Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming 650223, China.
authors.forename: Yuanzhong
authors.initials: Y
authors.lastname: Wang
mesh_terms: D001483:Base Sequence; D002681:China; D055453:Coriolaceae / Q000145:classification* / Q000166:cytology / Q000235:genetics / Q000302:isolation & purification; 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; D029963:Quercus / Q000382:microbiology*; D017422:Sequence Analysis, DNA; D013172:Spores, Fungal
chemical_list: D004271:DNA, Fungal; D004275:DNA, Ribosomal; D021903:DNA, Ribosomal Spacer
keywords: Fomitopsidaceae; brown-rot fungi; phylogeny; polypore; taxonomy