title: Genealogical concordance phylogenetic species recognition in the Fusarium oxysporum species complex.
abstract: Fusarium oxysporum is an important plant and human pathogenic ascomycetous group, with near ubiquity in agricultural and non-cultivated ecosystems. Phylogenetic evidence suggests that F. oxysporum is a complex of multiple morphologically cryptic species. Species boundaries and limits of genetic exchange within this complex are poorly defined, largely due to the absence of a sexual state and the paucity of morphological characters. This study determined species boundaries within the F. oxysporum species complex using Genealogical Concordance Phylogenetic Species Recognition (GCPSR) with eight protein coding loci. GCPSR criteria were used firstly to identify independent evolutionary lineages (IEL), which were subsequently collapsed into phylogenetic species. Seventeen IELs were initially identified resulting in the recognition of two phylogenetic species. Further evidence supporting this delineation is discussed.
authors.affiliation: Faculty of Agriculture and Environment, The University of Sydney, NSW 2006, Australia; The Royal Botanic Gardens and Domain Trust, Mrs Macquaries Rd, Sydney, NSW 2000, Australia. Electronic address: matthew.laurence@rbgsyd.nsw.gov.au.
authors.forename: Matthew H
authors.initials: MH
authors.lastname: Laurence
authors.affiliation: The Royal Botanic Gardens and Domain Trust, Mrs Macquaries Rd, Sydney, NSW 2000, Australia.
authors.forename: Brett A
authors.initials: BA
authors.lastname: Summerell
authors.affiliation: Faculty of Agriculture and Environment, The University of Sydney, NSW 2006, Australia.
authors.forename: Lester W
authors.initials: LW
authors.lastname: Burgess
authors.affiliation: The Royal Botanic Gardens and Domain Trust, Mrs Macquaries Rd, Sydney, NSW 2000, Australia.
authors.forename: Edward C Y
authors.initials: EC
authors.lastname: Liew
mesh_terms: D016000:Cluster Analysis; D004271:DNA, Fungal / Q000737:chemistry / Q000235:genetics; D005670:Fusarium / Q000145:classification* / Q000235:genetics*; D008969:Molecular Sequence Data; D058885:Multilocus Sequence Typing; D010802:Phylogeny; D017422:Sequence Analysis, DNA
chemical_list: D004271:DNA, Fungal
keywords: DNA sequence; Evolution; Natural ecosystems; Plant pathogen; Taxonomy