title: Cryptic diversity in Tranzscheliella spp. (Ustilaginales) is driven by host switches.
abstract: Species of Tranzscheliella have been reported as pathogens of more than 30 genera of grasses (Poaceae). In this study, a combined morphological and molecular phylogenetic approach was used to examine 33 specimens provisionally identified as belonging to the T. hypodytes species complex. The phylogenetic analysis resolved several well-supported clades that corresponded to known and novel species of Tranzscheliella. Four new species are described and illustrated. In addition, a new combination in Tranzscheliella is proposed for Sorosporium reverdattoanum. Cophylogenetic analyses assessed by distance-based and event-cost based methods, indicated host switches are likely the prominent force driving speciation in Tranzscheliella.
authors.affiliation: State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.|College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, China.
authors.forename: Ying-Ming
authors.initials: YM
authors.lastname: Li
authors.affiliation: Plant Pathology Herbarium, Department of Agriculture and Forestry, Dutton Park, Queensland, 4102, Australia.
authors.forename: Roger G
authors.initials: RG
authors.lastname: Shivas
authors.affiliation: State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.|College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Cai
mesh_terms: D044822:Biodiversity; D004271:DNA, Fungal; D021901:DNA, Intergenic; D058507:Host Specificity; D054884:Host-Pathogen Interactions; D010802:Phylogeny; D006109:Poaceae / Q000382:microbiology*; D014587:Ustilaginales / Q000145:classification* / Q000235:genetics* / Q000648:ultrastructure
chemical_list: D004271:DNA, Fungal; D021901:DNA, Intergenic