Wheat blast: aggressiveness of isolates of Pyricularia oryzae and effect on grain quality

Four wheat cultivars commonly used in Argentina displayed different pattern of reaction depending of the Pyricularia oryzae isolate inoculated, according to the observed lesions and type of reaction both on seedlings and spikes of the plants tested grown under greenhouse conditions. At seedling stag...

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Autores principales: Martínez, Sergio Iván, Sanabria Páez, Analía Teresa, Fleitas, María Constanza, Consolo, Verónica Fabiana, Perelló, Analía Edith
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Ciencias Agrarias
Pyricularia oryzae
Magnaporthe sp
wheat
pathogenicity
wheat blast disease severity
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/124803
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-124803
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
Pyricularia oryzae
Magnaporthe sp
wheat
pathogenicity
wheat blast disease severity
spellingShingle Ciencias Agrarias
Pyricularia oryzae
Magnaporthe sp
wheat
pathogenicity
wheat blast disease severity
Martínez, Sergio Iván
Sanabria Páez, Analía Teresa
Fleitas, María Constanza
Consolo, Verónica Fabiana
Perelló, Analía Edith
Wheat blast: aggressiveness of isolates of Pyricularia oryzae and effect on grain quality
topic_facet Ciencias Agrarias
Pyricularia oryzae
Magnaporthe sp
wheat
pathogenicity
wheat blast disease severity
description Four wheat cultivars commonly used in Argentina displayed different pattern of reaction depending of the Pyricularia oryzae isolate inoculated, according to the observed lesions and type of reaction both on seedlings and spikes of the plants tested grown under greenhouse conditions. At seedling stage, Buck Meteoro showed a susceptible reaction with seven of the eight isolates tested (phenotypic reaction 3 and 4). On the contrary, Baguette 11 showed a resistant reaction with most of the isolates tested (phenotypic reaction 1 and 2). At heading stage, cultivars Klein Proteo and Baguette 11 showed the greatest susceptibility to P. oryzae (more than 95% severity with isolates ArW22 and ArR1). On the contrary, low disease severity was shown in ACA 303 particularly in combination with isolates ArR3, ArR4, BrW27 and BolW8 with mean values of 2.18%–11.50%. The results indicate variation in aggressiveness among P. oryzae isolates evaluated. A low negative correlation between seedling disease severity and spike disease severity was found. The 1000-grain weight was negatively correlated with spike blast severity. Reduction values induced by each isolates ranged from 18.53% to 74.94%. ACA 303 showed the highest reduction in 1000-grain weight. The lower weight registered, in the most affected genotype ACA 303 infected with ArR2, was of 9.32 g. Protein extractability was higher in Wheat blast (WB) infected grains compared to the control healthy wheat. Protein values increased with the increasing severity of WB infection demonstrating P. oryzae interfered with the grain protein profile, thereby altering the grain protein content and quality.
format Articulo
Articulo
author Martínez, Sergio Iván
Sanabria Páez, Analía Teresa
Fleitas, María Constanza
Consolo, Verónica Fabiana
Perelló, Analía Edith
author_facet Martínez, Sergio Iván
Sanabria Páez, Analía Teresa
Fleitas, María Constanza
Consolo, Verónica Fabiana
Perelló, Analía Edith
author_sort Martínez, Sergio Iván
title Wheat blast: aggressiveness of isolates of Pyricularia oryzae and effect on grain quality
title_short Wheat blast: aggressiveness of isolates of Pyricularia oryzae and effect on grain quality
title_full Wheat blast: aggressiveness of isolates of Pyricularia oryzae and effect on grain quality
title_fullStr Wheat blast: aggressiveness of isolates of Pyricularia oryzae and effect on grain quality
title_full_unstemmed Wheat blast: aggressiveness of isolates of Pyricularia oryzae and effect on grain quality
title_sort wheat blast: aggressiveness of isolates of pyricularia oryzae and effect on grain quality
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/124803
work_keys_str_mv AT martinezsergioivan wheatblastaggressivenessofisolatesofpyriculariaoryzaeandeffectongrainquality
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