title: Different genes can result in different phylogenetic relationships in trichophyton species.
abstract: To determine the relationships among Trichophyton species we constructed three phylogenies, based on the nucleotide sequences of the actin, rRNA and DNA topoisomerase II genes. These phylogenies showed several conflicting branch points. For example, strains of T. verrucosum,T. concentricum and T. mentagrophytes var. erinacei were mingled with strains of Arthroderma benhamiae and could not be separated into their own phylogenic groups. In addition, strains of A. vanbreuseghemii, T. tonsurans, T. mentagrophytes var. interdigitale and T. mentagrophytes var. quinckeanum were mingled with strains of A. simii and could not be separated into their own phylogenic groups. T. rubrum and T. violaceum made up a clade, which was phylogenetically related to the A. benhamiae clade or A. simii clade, depending on the gene examined. These findings indicate the need to reevaluate the boundaries among Trichophyton species using an alternative to morphological or molecular biological methods.
authors.affiliation: Department of Dermatology, Kanazawa Medical University, Uchinada, Ishikawa, Japan.
authors.forename: Masako
authors.initials: M
authors.lastname: Kawasaki
authors.forename: Kazushi
authors.initials: K
authors.lastname: Anzawa
authors.forename: Asako
authors.initials: A
authors.lastname: Wakasa
authors.forename: Kiminobu
authors.initials: K
authors.lastname: Takeda
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Tanabe
authors.forename: Takashi
authors.initials: T
authors.lastname: Mochizuki
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ishizaki
authors.forename: Basavaraj M
authors.initials: BM
authors.lastname: Hemashettar
mesh_terms: D004250:DNA Topoisomerases, Type II / Q000235:genetics; D010802:Phylogeny; D014249:Trichophyton / Q000145:classification* / Q000235:genetics*
chemical_list: D004250:DNA Topoisomerases, Type II