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Take-all or nothing

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 b...

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Autores principales: Hernández-Restrepo, M., Groenewald, J.Z., Elliott, M.L., Canning, G., McMillan, V.E., Crous, P.W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: CBS Fungal Biodiversity Centre 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4969266/
https://www.ncbi.nlm.nih.gov/pubmed/27504028
http://dx.doi.org/10.1016/j.simyco.2016.06.002
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author Hernández-Restrepo, M.
Groenewald, J.Z.
Elliott, M.L.
Canning, G.
McMillan, V.E.
Crous, P.W.
author_facet Hernández-Restrepo, M.
Groenewald, J.Z.
Elliott, M.L.
Canning, G.
McMillan, V.E.
Crous, P.W.
author_sort Hernández-Restrepo, M.
collection PubMed
description 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.
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spelling pubmed-49692662016-08-08 Take-all or nothing Hernández-Restrepo, M. Groenewald, J.Z. Elliott, M.L. Canning, G. McMillan, V.E. Crous, P.W. Stud Mycol Research Paper 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. CBS Fungal Biodiversity Centre 2016 2016-07-01 /pmc/articles/PMC4969266/ /pubmed/27504028 http://dx.doi.org/10.1016/j.simyco.2016.06.002 Text en Copyright © 2016, CBS-KNAW Fungal Biodiversity Centre. Production and hosting by ELSEVIER B.V. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Research Paper
Hernández-Restrepo, M.
Groenewald, J.Z.
Elliott, M.L.
Canning, G.
McMillan, V.E.
Crous, P.W.
Take-all or nothing
title Take-all or nothing
title_full Take-all or nothing
title_fullStr Take-all or nothing
title_full_unstemmed Take-all or nothing
title_short Take-all or nothing
title_sort take-all or nothing
topic Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4969266/
https://www.ncbi.nlm.nih.gov/pubmed/27504028
http://dx.doi.org/10.1016/j.simyco.2016.06.002
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