Open AccessTaxonomic revision of the cellulose‐degrading fungus A cremonium cellulolyticus nomen nudum to T alaromyces based on phylogenetic analysis
Author(s) -
Fujii Tatsuya,
Hoshino Tamotsu,
Inoue Hiroyuki,
Yano Shinichi
Publication year - 2014
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/1574-6968.12352
Subject(s) - biology , phylogenetic tree , acremonium , cellulase , strain (injury) , holotype , microbiology and biotechnology , fungus , botany , phylogenetics , gene , taxonomy (biology) , genetics , cellulose , biochemistry , anatomy
The cellulase‐producing fungal strain Y ‐94, isolated in J apan and invalidly described as A cremonium cellulolyticus nom. nud. strain Y ‐94, seldom forms enteroarthric conidia under nutrient starvation conditions. Phylogenetic analysis using ITS 1‐5.8S‐ ITS 2 and RNA polymerase II large subunit gene sequences revealed that strain Y ‐94 is closely related to T alaromyces , given that these Y ‐94 sequences showed 100% identity with those of T alaromyces pinophilus NBRC 100533 T . By contrast, the identity between β‐tubulin‐encoding genes from strain Y ‐94 and T . pinophilus NBRC 100533 T was 98.1%. Morphological and phenotypic differences between these strains in colony color, conidiophore formation, and cellulase productivity were observed. Together, these data indicated that strain Y ‐94 belonged to the genus T alaromyces . We propose that strain Y ‐94 is a new species, T alaromyces cellulolyticus , on the basis of morphology and molecular evidence. The ex‐holotype is Y ‐94 (= FERM BP ‐5826, CBS 136886 [holotype] TNS ‐ F ‐48752).