AUTHOR=Zhang Qiu-Yue , Liu Zhan-Bo , Liu Hong-Gao , Si Jing 

TITLE=Two new corticioid species of Phanerochaetaceae (Polyporales, Basidiomycota) from Southwest China

JOURNAL=Frontiers in Cellular and Infection Microbiology

VOLUME=13

YEAR=2023

URL=https://www.frontiersin.org/journals/cellular-and-infection-microbiology/articles/10.3389/fcimb.2023.1105918

DOI=10.3389/fcimb.2023.1105918

ISSN=2235-2988

ABSTRACT=<p>Two new corticioid fungi in the family Phanerochaetaceae, <italic>Phanerochaete shenghuaii</italic> and <italic>Rhizochaete variegata</italic>, are described and illustrated from Southwest China based on morphological characteristics and molecular data. <italic>Phanerochaete shenghuaii</italic> is characterized by annual, effused, inseparable basidiocarps from substrate, ivory white to cream hymenial surface when juvenile, buff to yellowish brown with age, buff in KOH, a monomitic hyphal system, smooth cystidia, and ellipsoid basidiospores measuring 4.8–6 × 2.5–3.8 µm. <italic>Rhizochaete variegata</italic> is characterized by annual, effused, easily separable basidiocarps from substrate, buff-yellow to clay-pink fresh hymenial surface becoming cream to buff upon drying, violet in KOH, a monomitic hyphal system, encrusted cystidia, and ellipsoid basidiospores measuring 3–4 × 2.2–3 µm. The phylogenetic analyses based on ITS + nLSU rDNA sequences confirm the placement of the two new species, respectively, in the <italic>Phanerochaete</italic> clade and the <italic>Rhizochaete</italic> clade of Phanerochaetaceae. Phylogenetically related and morphologically similar species to these two new species are discussed.</p>