Fusarium head blight (FHB) is one of the most important fungal diseases affecting wheat worldwide and it is caused mainly by species within the Fusarium graminearum species complex (FGSC). This study evaluated the presence of FGSC in durum wheat from the main growing area in Argentina and analyzed the trichothecene genotype and chemotype of the strains isolated. Also, the genetic variability of the strains was assayed using ISSR markers. Molecular analysis revealed that among the strains isolated and identified morphologically as F. graminearum, there were 14 strains identified as F. cerealis. Also, it revealed that durum wheat grains were mostly contaminated by F. graminearum, being this the only species reported so far, within the FGSC, affecting durum wheat in Argentina. Analysis of molecular variance (AMOVA) indicated a high genetic variability within rather than between F. graminearum populations. All F. graminearum strains presented 15ADON genotype and were able to produce DON while all F. cerealis strains presented the NIV genotype and most of them were able to produce this toxin. The finding of F. cerealis in durum wheat grains indicates the need for investigating if this fungus is the responsible for the NIV contamination found in wheat in Argentina. © 2017 Koninklijke Nederlandse Planteziektenkundige Vereniging
Documento: | Artículo |
Título: | Trichothecene genotype and genetic variability of Fusarium graminearum and F. cerealis isolated from durum wheat in Argentina |
Autor: | Palacios, S.A.; Giaj Merlera, G.; Erazo, J.; Reynoso, M.M.; Farnochi, M.C.; Torres, A.M. |
Filiación: | Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas, Físico- Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km 601 (5800), Río Cuarto, Córdoba, Argentina Fellowship CONICET, Buenos Aires, Argentina Members of the Research Carrer of CONICET, Buenos Aires, Argentina |
Palabras clave: | Durum wheat; Fusarium cerealis; Fusarium graminearum; Fusarium head blight; ISSR markers; Trichothecenes |
Año: | 2017 |
Página de inicio: | 1 |
Página de fin: | 13 |
DOI: | http://dx.doi.org/10.1007/s10658-017-1247-0 |
Título revista: | European Journal of Plant Pathology |
Título revista abreviado: | Eur. J. Plant Pathol. |
ISSN: | 09291873 |
CODEN: | EPLPE |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09291873_v_n_p1_Palacios |