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Review article - Peer-reviewed, 2021

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

Singh, Pawan K.; Gahtyari, Navin C.; Roy, Chandan; Roy, Krishna K.; He, Xinyao; Tembo, B.; Xu, Kaijie; Juliana, Philomin; Sonder, Kai; Kabir, Muhammad R.; Chawade, Aakash

Abstract

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.

Keywords

wheat blast; Magnaporthe oryzae pathotype Triticum; disease spread; integrated disease management; Intercontinental spread

Published in

Frontiers in Plant Science
2021, volume: 12, article number: 710707
Publisher: FRONTIERS MEDIA SA

Authors' information

Singh, Pawan K.
International Maize and Wheat Improvement Center (CIMMYT)
Gahtyari, Navin C.
Indian Council of Agricultural Research (ICAR)
Roy, Chandan
Bihar Agricultural University
Roy, Krishna K.
Bangladesh Wheat and Maize Research Institute
He, Xinyao
International Maize and Wheat Improvement Center (CIMMYT)
Tembo, B.
Zambia Agr Res Inst ZARI
Xu, Kaijie
Chinese Academy of Agricultural Sciences
Juliana, Philomin
International Maize and Wheat Improvement Center (CIMMYT)
Sonder, Kai
International Maize and Wheat Improvement Center (CIMMYT)
Kabir, Muhammad R.
Bangladesh Wheat and Maize Research Institute
Swedish University of Agricultural Sciences, Department of Plant Breeding

UKÄ Subject classification

Agricultural Science

Publication Identifiers

DOI: https://doi.org/10.3389/fpls.2021.710707

URI (permanent link to this page)

https://res.slu.se/id/publ/113275