Show simple item record 2017-10-25T11:34:44Z 2017-10-25T11:34:44Z
dc.title Species composition and genetic structure of Fusarium graminearum species complex populations affecting the main barley growing regions of South America en
dc.type Artículo es
dcterms.abstract 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. en
dcterms.extent 10 p. es
dcterms.issued 2016
dcterms.language Inglés es
dcterms.license Attribution 4.0 International (BY 4.0) es
dcterms.subject AFLP es
dcterms.subject FGSC en
dcterms.subject Hordeum vulgare en
dcterms.subject SRAP en
dcterms.subject trichothecene genotype en
cic.version info:eu-repo/semantics/submittedVersion es Castañares, Eliana es Dinolfo, María Inés es Del Ponte, E. M. es Pan, D. es Stenglein, Sebastián es
cic.lugarDesarrollo Laboratorio de Biología Funcional y Biotecnología es
dcterms.subject.materia Agronomía, reproducción y protección de plantas es
dcterms.identifier.url Recurso Completo es
dcterms.identifier.other es
dcterms.isPartOf.issue vol. 65 es
dcterms.isPartOf.series Plant Pathology es
cic.isPeerReviewed true es
cic.isFulltext true es


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