Novel taxa in the Fusarium fujikuroi species complex from Pinus spp.

The pitch canker pathogen Fusarium circinatum has caused devastation to Pinus spp. in natural forests and non-natives in commercially managed plantations. This has drawn attention to the potential importance of Fusarium species as pathogens of forest trees. In this study, we explored the diversity o...

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Autores principales: Herron, D.A., Wingfield, M.J., Wingfield, B.D., Rodas, C.A., Marincowitz, S., Steenkamp, E.T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: CBS Fungal Biodiversity Centre 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4779798/
https://www.ncbi.nlm.nih.gov/pubmed/26955193
http://dx.doi.org/10.1016/j.simyco.2014.12.001
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author Herron, D.A.
Wingfield, M.J.
Wingfield, B.D.
Rodas, C.A.
Marincowitz, S.
Steenkamp, E.T.
author_facet Herron, D.A.
Wingfield, M.J.
Wingfield, B.D.
Rodas, C.A.
Marincowitz, S.
Steenkamp, E.T.
author_sort Herron, D.A.
collection PubMed
description The pitch canker pathogen Fusarium circinatum has caused devastation to Pinus spp. in natural forests and non-natives in commercially managed plantations. This has drawn attention to the potential importance of Fusarium species as pathogens of forest trees. In this study, we explored the diversity of Fusarium species associated with diseased Pinus patula, P. tecunumanii, P. kesiya and P. maximinoi in Colombian plantations and nurseries. Plants displaying symptoms associated with a F. circinatum-like infection (i.e., stem cankers and branch die-back on trees in plantations and root or collar rot of seedlings) were sampled. A total of 57 isolates were collected and characterised based on DNA sequence data for the translation elongation factor 1-α and β-tubulin gene regions. Phylogenetic analyses of these data allowed for the identification of more than 10 Fusarium species. These included F. circinatum, F. oxysporum, species within the Fusarium solani species complex and seven novel species in the Fusarium fujikuroi species complex (formerly the Gibberella fujikuroi species complex), five of which are described here as new. Selected isolates of the new species were tested for their pathogenicity on Pinus patula and compared with that of F. circinatum. Of these, F. marasasianum, F. parvisorum and F. sororula displayed levels of pathogenicity to P. patula that were comparable with that of F. circinatum. These apparently emerging pathogens thus pose a significant risk to forestry in Colombia and other parts of the world.
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spelling pubmed-47797982016-03-07 Novel taxa in the Fusarium fujikuroi species complex from Pinus spp. Herron, D.A. Wingfield, M.J. Wingfield, B.D. Rodas, C.A. Marincowitz, S. Steenkamp, E.T. Stud Mycol Research Paper The pitch canker pathogen Fusarium circinatum has caused devastation to Pinus spp. in natural forests and non-natives in commercially managed plantations. This has drawn attention to the potential importance of Fusarium species as pathogens of forest trees. In this study, we explored the diversity of Fusarium species associated with diseased Pinus patula, P. tecunumanii, P. kesiya and P. maximinoi in Colombian plantations and nurseries. Plants displaying symptoms associated with a F. circinatum-like infection (i.e., stem cankers and branch die-back on trees in plantations and root or collar rot of seedlings) were sampled. A total of 57 isolates were collected and characterised based on DNA sequence data for the translation elongation factor 1-α and β-tubulin gene regions. Phylogenetic analyses of these data allowed for the identification of more than 10 Fusarium species. These included F. circinatum, F. oxysporum, species within the Fusarium solani species complex and seven novel species in the Fusarium fujikuroi species complex (formerly the Gibberella fujikuroi species complex), five of which are described here as new. Selected isolates of the new species were tested for their pathogenicity on Pinus patula and compared with that of F. circinatum. Of these, F. marasasianum, F. parvisorum and F. sororula displayed levels of pathogenicity to P. patula that were comparable with that of F. circinatum. These apparently emerging pathogens thus pose a significant risk to forestry in Colombia and other parts of the world. CBS Fungal Biodiversity Centre 2015-03 2015-01-23 /pmc/articles/PMC4779798/ /pubmed/26955193 http://dx.doi.org/10.1016/j.simyco.2014.12.001 Text en Copyright © 2014, CBS-KNAW Fungal Biodiversity Centre. Production and hosting by ELSEVIER B.V. http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).
spellingShingle Research Paper
Herron, D.A.
Wingfield, M.J.
Wingfield, B.D.
Rodas, C.A.
Marincowitz, S.
Steenkamp, E.T.
Novel taxa in the Fusarium fujikuroi species complex from Pinus spp.
title Novel taxa in the Fusarium fujikuroi species complex from Pinus spp.
title_full Novel taxa in the Fusarium fujikuroi species complex from Pinus spp.
title_fullStr Novel taxa in the Fusarium fujikuroi species complex from Pinus spp.
title_full_unstemmed Novel taxa in the Fusarium fujikuroi species complex from Pinus spp.
title_short Novel taxa in the Fusarium fujikuroi species complex from Pinus spp.
title_sort novel taxa in the fusarium fujikuroi species complex from pinus spp.
topic Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4779798/
https://www.ncbi.nlm.nih.gov/pubmed/26955193
http://dx.doi.org/10.1016/j.simyco.2014.12.001
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