A high proportion of NX-2 genotype strains are found among Fusarium graminearum isolates from northeastern New York State
Fusarium graminearum, a fungal pathogen of wheat, barley, and corn, produces a variety of trichothecene mycotoxins that are important as virulence factors and as seed contaminants reducing grain quality. A previous survey of the pathogen in New York State identified variation in genes indicative of...
| Autores: | , , , , , , , |
|---|---|
| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | Brasil |
| Recursos: | Universidade Federal de Viçosa (UFV) |
| Repositorio: | LOCUS Repositório Institucional da UFV |
| Idioma: | inglés |
| OAI Identifier: | oai:locus.ufv.br:123456789/22728 |
| Acesso em linha: | https://doi.org/10.1007/s10658-017-1314-6 http://www.locus.ufv.br/handle/123456789/22728 |
| Access Level: | acceso abierto |
| Palavra-chave: | Fusarium head blight NX-2 Mycotoxin Fusarium graminearum |
| Resumo: | Fusarium graminearum, a fungal pathogen of wheat, barley, and corn, produces a variety of trichothecene mycotoxins that are important as virulence factors and as seed contaminants reducing grain quality. A previous survey of the pathogen in New York State identified variation in genes indicative of trichothecene diversity. Recently F. graminearum strains that produce a newly characterized trichothecene mycotoxin called NX-2 have been identified in North America. Using a large collection of F. graminearum strains from Willsboro NY, we found that the frequency of NX-2 genotype strains was 7–14 times higher than at other locations where it was reported previously. NX-2 genotypes were not only found in wheat heads but also found in high frequency from air samples and on maize ears and stubble. Because NX-2 genotypes may represent as much as 20% of the total F. graminearum population, this regional fungal population provides an opportunity to assess the effects of the novel NX-2 trichothecene on fungal virulence, toxin loading, and patterns of host specificity that could inform future disease management and plant breeding. |
|---|