Review on resistance to wheat blast disease (Magnaporthe oryzae Triticum) from the breeder point-of-view: use of the experience on resistance to rice blast disease

Vales, Michel; Anzoategui, T.; Huallpa, B.; Cazon, M. I.

doi:10.1007/s10681-017-2087-x

Cited by 36 publications

(11 citation statements)

References 54 publications

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“…A good number of reviews have recently been published on various aspects of wheat blast disease (Cruz and Valent 2017;Ceresini et al 2018Ceresini et al , 2019Vales et al 2018;Islam et al 2019). This comprehensive review updates our current knowledge and progresses of the mitigation of wheat blast using various novel approaches.…”

Section: Introductionmentioning

confidence: 99%

Wheat blast: a new threat to food security

et al. 2020

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Wheat blast, caused by the Magnaporthe oryzae Triticum (MoT) lineage (synonym Pyricularia oryzae Triticum lineage), is a destructive disease in South America and Bangladesh. It is primarily a disease of wheat head, which can cause yield loss up to 100% under favorable disease conditions. The head infection results in complete or partial bleaching of the spike above the point of infection with either no grain or shriveled grain with low test weight. Due to low fungicide efficacy against the disease and lack of availability of resistant varieties, an integrated management program should be adopted to control this serious wheat disease. First of all, a convenient and specific diagnostic tool is needed for evaluating seed health and early detection in wheat field to initiate timely mitigation measures and thereby decreasing pathogen initial inoculum and dispersal. Second, we should have a better understanding of the epidemiology of the disease and develop a real-time disease monitoring and surveillance system to alert growers to apply management practices at an optimum time. Third, we need a better understanding of the infection biology of the fungus and its interaction with wheat plants at the tissue and molecular levels helpful for improving disease management. Fourth, breeding for resistance to wheat blast can be accelerated by using resistance genes such as 2NS translocation, Rmg8 and RmgGR119 or advanced genomic technology such as CRISPR-Cas. Fifth, integration of alternative disease management practices, such as biological control using antagonistic microorganisms or derivatives thereof to achieve sustainable approach for the management of wheat blast. Finally, a globally concerted effort is needed using open science and open data sharing approaches to prevent this seed-and airborne plant disease's widespread devastation of wheat crop. This comprehensive review updates our knowledge on wheat blast disease and discusses the approaches for its sustainable management for ensuring food and nutritional security of the ever-increasing global population.

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Section: Introductionmentioning

confidence: 99%

Wheat blast: a new threat to food security

et al. 2020

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“…Resistant cultivar might lose high yield or good taste. For example, in Bolivia, moderately susceptible cultivar, Motacu, was preferred over the Milan genotype-based resistant cultivar, Sausal ( Vales et al, 2018 ). This is because farmers wanted other traits that Motacu has such as drought tolerance and resistance to rust and blight.…”

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confidence: 99%

Wheat Blast in Bangladesh: The Current Situation and Future Impacts

2019

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“…The wheat genetic background can influence the effectiveness of 2NS/2AS translocation, though certain Magnaporthe pathotypes are able to overcome the resistance it provides (Valent, ; Vales, Anzoátegui, Huallpa, & Cazon, ). In addition, two of the lines (INT‐Y15‐9 and INT‐Y15‐11) provide examples of positive effects of the genetic background on the 2NS/AS translocation which showed a lower disease rating than ‘Milan’ or ‘Caninde 1’.…”

Section: Discussionmentioning

confidence: 99%

“…able to overcome the resistance it provides (Valent, 2016;Vales, Anzoátegui, Huallpa, & Cazon, 2018). In addition, two of the lines we suspect that during the process of selection, some of these lines could have outcrossed with one or more sources of the 2NS/2AS translocation, which is not represented in their genealogy.…”

Section: Discussionmentioning

confidence: 99%

Variable resistance of bread wheat (Triticum aestivum) lines carrying 2NS/2AS translocation to wheat blast

et al. 2018

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Wheat blast disease, caused by Magnaporthe oryzae (anamorph Pyricularia oryzae), produces severe damage to wheat production in South America. It was observed that many resistant cultivars contain the 2NS/2AS translocation from Triticum ventricosum. In this study, we evaluate the presence of the 2NS/2AS translocation in 57 advanced breeding lines and one variety ‘Caninde 1’ from Paraguayan wheat germplasm, using VENTRIUP‐LN2 primers. The germplasm ‘Caninde 1 and 22’ of the breeding lines, found positive for the presence of 2NS/2AS translocation, were inoculated with a single aggressive Magnaporthe pathotype P14‐039, to assess their response to wheat blast infection under controlled conditions. Based on the disease infection score, ten of the breeding lines, ‘Caninde 1’ and ‘Milan’ (positive control), were classified as resistant. Three of the remaining breeding lines were classified as moderately resistant, five as moderately susceptible and other four as susceptible. Our results show that the expression of 2NS/2AS‐based blast resistance is more dependent on genetic background of the inserted germplasm than previously envisioned.

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Review on resistance to wheat blast disease (Magnaporthe oryzae Triticum) from the breeder point-of-view: use of the experience on resistance to rice blast disease

Cited by 36 publications

References 54 publications

Wheat blast: a new threat to food security

Wheat blast: a new threat to food security

Wheat Blast in Bangladesh: The Current Situation and Future Impacts

Variable resistance of bread wheat (Triticum aestivum) lines carrying 2NS/2AS translocation to wheat blast

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