Aggressiveness and genetic variability of <i>Fusarium graminearum</i> populations from the main wheat production area of Argentina

Objectives: Differences in aggressiveness and mycotoxin production were previously found among isolates of Fusarium graminearum, the main incitant of Fusarium head blight (FHB) of wheat, from Argentina. This study aims at evaluating the genetic diversity present in these isolates and its relationshi...

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Autores principales: Malbrán, Ismael, Mourelos, Cecilia Alejandra, Balatti, Pedro Alberto, Lori, Gladys Albina
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2018
Materias:
Ciencias Agrarias
Fusarium head blight
Inter-simple sequence repeats
Polymerase chain reaction
Triticum aestivum
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/97120
https://ri.conicet.gov.ar/11336/81683
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-97120
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Fusarium head blight
Inter-simple sequence repeats
Polymerase chain reaction
Triticum aestivum
spellingShingle Ciencias Agrarias
Fusarium head blight
Inter-simple sequence repeats
Polymerase chain reaction
Triticum aestivum
Malbrán, Ismael
Mourelos, Cecilia Alejandra
Balatti, Pedro Alberto
Lori, Gladys Albina
Aggressiveness and genetic variability of <i>Fusarium graminearum</i> populations from the main wheat production area of Argentina
topic_facet Ciencias Agrarias
Fusarium head blight
Inter-simple sequence repeats
Polymerase chain reaction
Triticum aestivum
description Objectives: Differences in aggressiveness and mycotoxin production were previously found among isolates of Fusarium graminearum, the main incitant of Fusarium head blight (FHB) of wheat, from Argentina. This study aims at evaluating the genetic diversity present in these isolates and its relationship with their aggressiveness. Methods: Inter-simple sequence repeats polymerase chain reaction (ISSR-PCR) was used to asses the genetic variability present in 112 F. graminearum isolates from 28 localities of Buenos Aires Province, Argentina. The analysis of molecular variance (AMOVA) was performed to examine the population structure. Results: F. graminearum populations from Argentina showed a large genotypic variability. Seventy seven percent of the isolates included in the analysis were identified as a unique haplotype. The largest part of this variation resulted from genetic differences within (89%) rather than between populations (11%). The constructed dendrogram showed no genotype clustering according to geographic origin or aggressiveness of the isolates. Conclusions: A high genetic heterogeneity was found in the F. graminearum populations from Argentina. This diversity can possibly reflect the occurrence of high frequencies of sexual outcrosses in the field and gene flow.
format Articulo
Preprint
author Malbrán, Ismael
Mourelos, Cecilia Alejandra
Balatti, Pedro Alberto
Lori, Gladys Albina
author_facet Malbrán, Ismael
Mourelos, Cecilia Alejandra
Balatti, Pedro Alberto
Lori, Gladys Albina
author_sort Malbrán, Ismael
title Aggressiveness and genetic variability of <i>Fusarium graminearum</i> populations from the main wheat production area of Argentina
title_short Aggressiveness and genetic variability of <i>Fusarium graminearum</i> populations from the main wheat production area of Argentina
title_full Aggressiveness and genetic variability of <i>Fusarium graminearum</i> populations from the main wheat production area of Argentina
title_fullStr Aggressiveness and genetic variability of <i>Fusarium graminearum</i> populations from the main wheat production area of Argentina
title_full_unstemmed Aggressiveness and genetic variability of <i>Fusarium graminearum</i> populations from the main wheat production area of Argentina
title_sort aggressiveness and genetic variability of <i>fusarium graminearum</i> populations from the main wheat production area of argentina
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/97120
https://ri.conicet.gov.ar/11336/81683
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