Take-all or nothing
dc.contributor.author | Hernandez-Restrepo, Margarita | |
dc.contributor.author | Groenewald, Johannes Zacharias | |
dc.contributor.author | Elliott, M.L. | |
dc.contributor.author | Canning, G. | |
dc.contributor.author | McMillan, V.E. | |
dc.contributor.author | Crous, Pedro W. | |
dc.date.accessioned | 2017-06-06T07:43:17Z | |
dc.date.available | 2017-06-06T07:43:17Z | |
dc.date.issued | 2016-07-01 | |
dc.description.abstract | Take-all disease of Poaceae is caused by Gaeumannomyces graminis (Magnaporthaceae). Four varieties are recognised in G. graminis based on ascospore size, hyphopodial morphology and host preference. The aim of the present study was to clarify boundaries among species and varieties in Gaeumannomyces by combining morphology and multi-locus phylogenetic analyses based on partial gene sequences of ITS, LSU, tef1 and rpb1. Two new genera, Falciphoriella and Gaeumannomycella were subsequently introduced in Magnaporthaceae. The resulting phylogeny revealed several cryptic species previously overlooked within Gaeumannomyces. Isolates of Gaeumannomyces were distributed in four main clades, from which 19 species could be delimited, 12 of which were new to science. Our results show that the former varieties Gaeumannomyces graminis var. avenae and Gaeumannomyces graminis var. tritici represent species phylogenetically distinct from G. graminis, for which the new combinations G. avenae and G. tritici are introduced. Based on molecular data, morphology and host preferences, Gaeumannomyces graminis var. maydis is proposed as a synonym of G. radicicola. Furthermore, an epitype for Gaeumannomyces graminis var. avenae was designated to help stabilise the application of that name. | en_ZA |
dc.description.department | Forestry and Agricultural Biotechnology Institute (FABI) | en_ZA |
dc.description.department | Microbiology and Plant Pathology | en_ZA |
dc.description.librarian | am2017 | en_ZA |
dc.description.sponsorship | VM was supported by the Biotechnology and Biological Sciences Research Council of the UK (BBSRC) through the Institute Strategic Programme Grant 20:20 Wheat® (BB/J/00426X/1). GC was supported by BBSRC through the research grant “Enhancing diversity in UK wheat through a public sector pre-breeding programme” (BB/I002278/1). | en_ZA |
dc.description.uri | http://www.studiesinmycology.org | en_ZA |
dc.identifier.citation | Hernandez-Restrepo, M, Groenewald, JZ, Elliott, ML, Canning, G, McMillan, VE & Crous, PW 2016, 'Take-all or nothing', Studies in Mycology, vol. 83, pp. 19-48. | en_ZA |
dc.identifier.issn | 0166-0616 (print) | |
dc.identifier.issn | 1872-9797 (online) | |
dc.identifier.other | 10.1016/j.simyco.2016.06.002 | |
dc.identifier.uri | http://hdl.handle.net/2263/60897 | |
dc.language.iso | en | en_ZA |
dc.publisher | Fungal Biodiversity Centre (CBS) | en_ZA |
dc.rights | © 2016, CBS-KNAW Fungal Biodiversity Centre. Production and hosting by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/). | en_ZA |
dc.subject | Cryptic species | en_ZA |
dc.subject | Gaeumannomyces graminis | en_ZA |
dc.subject | Magnaporthaceae | en_ZA |
dc.subject | Phylogeny | en_ZA |
dc.subject | Triticum | en_ZA |
dc.title | Take-all or nothing | en_ZA |
dc.type | Article | en_ZA |