Pyricularia oryzae en cultivos de cebada en Corrientes (Argentina)

Gutiérrez, Susana Alejandra; Cúndom, María A.

doi:10.1590/0100-5405/2063

Cited by 7 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first WB incidence in Argentina was in its northeastern province Formosa in 2007, followed by reports from two other northeastern provinces, Chaco (2007/08) and Corrientes (2012/13), all bordering to Paraguay (Kohli et al, 2011;Gutiérrez and Cúndom, 2015). The occurrence of this disease in the above-mentioned three provinces did not pose a big threat to Argentine wheat production because of the limited wheat area there; however, the disease arrived in the province of Buenos Aires in 2012, one of its major wheat producers (Perelló et al, 2015).…”

Section: Spread Of Wheat Blast In South Americamentioning

confidence: 99%

Wheat Blast: A Disease Spreading by Intercontinental Jumps and Its Management Strategies

et al. 2021

View full text Add to dashboard Cite

Wheat blast (WB) caused by Magnaporthe oryzae pathotype Triticum (MoT) is an important fungal disease in tropical and subtropical wheat production regions. The disease was initially identified in Brazil in 1985, and it subsequently spread to some major wheat-producing areas of the country as well as several South American countries such as Bolivia, Paraguay, and Argentina. In recent years, WB has been introduced to Bangladesh and Zambia via international wheat trade, threatening wheat production in South Asia and Southern Africa with the possible further spreading in these two continents. Resistance source is mostly limited to 2NS carriers, which are being eroded by newly emerged MoT isolates, demonstrating an urgent need for identification and utilization of non-2NS resistance sources. Fungicides are also being heavily relied on to manage WB that resulted in increasing fungal resistance, which should be addressed by utilization of new fungicides or rotating different fungicides. Additionally, quarantine measures, cultural practices, non-fungicidal chemical treatment, disease forecasting, biocontrol etc., are also effective components of integrated WB management, which could be used in combination with varietal resistance and fungicides to obtain reasonable management of this disease.

show abstract

Section: Spread Of Wheat Blast In South Americamentioning

confidence: 99%

Wheat Blast: A Disease Spreading by Intercontinental Jumps and Its Management Strategies

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Magnaporthe oryzae was also reported in barley cv. Alicia INTA in Corrientes Province of Argentina (Gutiérrez & Cúndom, ). These findings call for intensive monitoring and surveillance of the wheat blast pathogen to limit its further spread.…”

Section: Introductionmentioning

confidence: 99%

Pathogenicity of isolates of Magnaporthe spp. from wheat and grasses infecting seedlings and mature wheat plants in Argentina

et al. 2017

View full text Add to dashboard Cite

Wheat blast of wheat (Triticum aestivum), caused by Magnaporthe oryzae pathotype triticum (MoT; anamorph Pyricularia oryzae) is a destructive disease in the South American countries of Brazil, Paraguay and Bolivia. In Argentina, the fungus was recently recorded on wheat and barley plants in the northeast part of the country, Buenos Aires and Corrientes Provinces, with a potential for spreading. This work aimed to study, for the first time, the morphocultural and pathogenic characteristics of Magnaporthe isolates collected from wheat and other herbaceous species in Argentina and three neighbouring countries (Paraguay, Brazil and Bolivia) and determine their aggressiveness on wheat varieties. Statistical differences among isolates, culture media, and development conditions were found for conidia colour, growth rate, size and sporulation rate. Pathogenicity tests performed on seedlings with 19 isolates of Magnaporthe spp. under greenhouse conditions showed a maximum disease severity of 55.3% and 66.7% for varieties BIOINTA 3004 and Baguette 18, respectively. Weed and grass isolates were infectious on wheat, demonstrating their potential epidemiological role on the disease. Spike disease severity was 34.6% for the host × pathogen interaction of BIOINTA 3004 × PY22. Observed symptoms included partial or total spike bleaching, and glume and rachis discolouration. The 1000‐grain weight was significantly reduced to 38.5% and 63.1% for cultivars BIOINTA 3004 and Baguette 18, respectively. The disease affected grain germination, which fell to 65.9% for seeds infected with the PYAR22 isolate. Symptoms observed in infected grains were partial spotting, grain softening, and rot symptoms with the presence of a greyish mould.

show abstract

First report of barley blast caused by Magnaporthe oryzae pathotype Triticum (MoT) in Bangladesh

et al. 2021

View full text Add to dashboard Cite

Pyricularia oryzae en cultivos de cebada en Corrientes (Argentina)

Cited by 7 publications

References 5 publications

Wheat Blast: A Disease Spreading by Intercontinental Jumps and Its Management Strategies

Wheat Blast: A Disease Spreading by Intercontinental Jumps and Its Management Strategies

Pathogenicity of isolates of Magnaporthe spp. from wheat and grasses infecting seedlings and mature wheat plants in Argentina

First report of barley blast caused by Magnaporthe oryzae pathotype Triticum (MoT) in Bangladesh

Contact Info

Product

Resources

About