title: An integrated taxonomic study of Fusarium langsethiae, Fusarium poae and Fusarium sporotrichioides based on the use of composite datasets.
abstract: An integrated systematic study was carried out to clarify the taxonomical position and relationship of Fusarium langsethiae to other taxa within the Fusarium section Sporotrichiella. Strains of this species were compared with strains of the closely related species Fusarium poae and Fusarium sporotrichioides using a composite dataset. This set consisted of DNA sequences derived from the ribosomal internal transcribed spacer (ITS) regions, partial sequences of the ribosomal intergenic spacer (IGS) region, the beta-tubulin and translation elongation factor-1 alpha (EF-1alpha) genes, AFLP fingerprints, chromatographic data on secondary metabolites and morphological data and growth characteristics. From these combined data, a consensus matrix was calculated by taking the mean of all pairwise distances between single isolates over all separate datasets. The consensus matrix was used as the basis for the construction of a UPGMA dendrogram and a multidimensional scaling, both of which revealed a clear separation of the three taxa. Partial IGS, EF-1alpha and beta-tubulin sequence-as well as chromatography-and AFLP-derived similarities turned out to be comparably consistent, while ITS sequence- and morphology-derived similarity matrices were rather divergent.
authors.affiliation: Technische Universitat-München, Lehrstuhl für Technische Mikrobiologie, Weihenstephaner Steig 16, D-85350 Freising, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Schmidt
authors.forename: A
authors.initials: A
authors.lastname: Adler
authors.forename: A
authors.initials: A
authors.lastname: Holst-Jensen
authors.forename: S S
authors.initials: SS
authors.lastname: Klemsdal
authors.forename: A
authors.initials: A
authors.lastname: Logrieco
authors.forename: R L
authors.initials: RL
authors.lastname: Mach
authors.forename: H I
authors.initials: HI
authors.lastname: Nirenberg
authors.forename: U
authors.initials: U
authors.lastname: Thrane
authors.forename: M
authors.initials: M
authors.lastname: Torp
authors.forename: R F
authors.initials: RF
authors.lastname: Vogel
authors.forename: T
authors.initials: T
authors.lastname: Yli-Mattila
authors.forename: L
authors.initials: L
authors.lastname: Niessen
mesh_terms: D001483:Base Sequence; D016000:Cluster Analysis; D016172:DNA Fingerprinting; D017931:DNA Primers; D004271:DNA, Fungal / Q000737:chemistry*; D021903:DNA, Ribosomal Spacer / Q000737:chemistry; D005670:Fusarium / Q000145:classification* / Q000235:genetics*; D005800:Genes, Fungal; D020648:Peptide Elongation Factor 1 / Q000235:genetics; D010802:Phylogeny; D013045:Species Specificity; D014404:Tubulin / Q000235:genetics
chemical_list: D017931:DNA Primers; D004271:DNA, Fungal; D021903:DNA, Ribosomal Spacer; D020648:Peptide Elongation Factor 1; D014404:Tubulin