Ustilago species causing leaf-stripe smut revisited

Kruse, Julia and Dietrich, Wolfgang and Zimmermann, Horst and Klenke, Friedemann and Richter, Udo and Richter, Heidrun and Thines, Marco (2018) Ustilago species causing leaf-stripe smut revisited. IMA Fungus, 9 (1). pp. 49-73. ISSN 2210-6340

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Abstract

Leaf-stripe smuts on grasses are a highly polyphyletic group within Ustilaginomycotina, occurring in three genera, Tilletia, Urocystis, and Ustilago. Currently more than 12 Ustilago species inciting stripe smuts are recognised. The majority belong to the Ustilago stniformis-complex, with about 30 different taxa described from 165 different plant species. This study aims to assess whether host distinct-lineages can be observed amongst the Ustilago leaf-stripe smuts using nine different loci on a representative set. Phylogenetic reconstructions supported the monophyly of the Ustilago striiformis-complex that causes leaf-stripe and the polyphyly of other leaf-stripe smuts within Ustilago. Furthermore, smut specimens from the same host genus generally clustered together in well-supported clades that often had available species names for these lineages. In addition to already-named lineages, three new lineages were observed, and described as new species on the basis of host specificity and molecular differences: namely Ustilago jagei sp. nov. on Agrostis stolonifera, U. kummeri sp. nov. on Bromus inermis, and U. neocopinata sp. nov. on Dactylis glomerate.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited according to a Creative Commons 4.0 license.
Faculty/School / Institute/Centre: Current - Institute for Life Sciences and the Environment - Centre for Crop Health
Date Deposited: 19 Mar 2019 05:02
Last Modified: 05 Apr 2019 01:51
Uncontrolled Keywords: DNA-based taxonomy; host specificity; molecular species discrimination; multigene phylogeny; new taxa; species complex; Ustilaginaceae
Fields of Research : 06 Biological Sciences > 0603 Evolutionary Biology > 060307 Host-Parasite Interactions
06 Biological Sciences > 0605 Microbiology > 060505 Mycology
Identification Number or DOI: 10.5598/imafungus.2018.09.01.05
URI: http://eprints.usq.edu.au/id/eprint/36197

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