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Artículo

Species composition and genetic structure of Fusarium graminearum species complex populations affecting the main barley growing regions of South America

Castañares, ElianaIcon ; Dinolfo, María InésIcon ; Ponte, E. M. Del; Pan, D.; Stenglein, Sebastian AlbertoIcon
Fecha de publicación: 29/10/2016
Editorial: Wiley Blackwell Publishing, Inc
Revista: Plant Pathology
ISSN: 0032-0862
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Agricultura, Silvicultura y Pesca

Resumen

Members of the Fusarium graminearum species complex (FGSC), such as F. graminearum and F. asiaticum, are the main cause of fusarium head blight (FHB) of wheat and barley worldwide. In this study, 117 FGSC isolates obtained from commercial barley grain produced in Argentina (n = 43 isolates), Brazil (n = 35), and Uruguay (n = 39) were identified to species and trichothecene genotypes, and analysed using amplified fragment length polymorphism (AFLP) and sequence-related amplified polymorphism (SRAP) markers. In addition, reductase (RED) and trichothecene 3-Oacetyltransferase (Tri101) were sequenced for a subset of 24 isolates. The majority of the isolates (n = 103) were identified as F. graminearum, which was the only species found in Argentina. In Uruguay, only one F. cortaderiae isolate was found among F. graminearum isolates. In Brazil, F. graminearum also dominated the collection (22/35), followed by F. meridionale (8/35), F. asiaticum (2/35), F. cortaderiae (2/35) and F. austroamericanum (1/35). Species were structured by trichothecene genotype: all F. graminearum were of the 15-acetyldeoxynivalenol (ADON), F. meridionale, F. asiaticum and F. cortaderiae were of the nivalenol (NIV), and F. austroamericanum was of the 3 ADON genotype. Both AFLP and SRAP data showed high levels of genetic variability, which was higher within than among countries. Isolates were not structured by country of origin. SRAP analysis grouped F. graminearum in a separate cluster from the other species within the complex. However, AFLP analysis failed to resolve the species into distinct clades with partial clustering of F. meridionale, F. austroamericanum, F. asiaticum and F graminearum isolates.
Palabras clave: Aflp , Srap , Hordeum Vulgare , Fgsc
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/23854
DOI: http://dx.doi.org/10.1111/ppa.12470
URL: http://onlinelibrary.wiley.com/doi/10.1111/ppa.12470/abstract
Colecciones
Articulos(INBIOTEC)
Articulos de INSTITUTO DE INV. EN BIODIVERSIDAD Y BIOTECNOLOGIA
Citación
Castañares, Eliana; Dinolfo, María Inés; Ponte, E. M. Del; Pan, D.; Stenglein, Sebastian Alberto; Species composition and genetic structure of Fusarium graminearum species complex populations affecting the main barley growing regions of South America; Wiley Blackwell Publishing, Inc; Plant Pathology; 65; 6; 29-10-2016; 930-930
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