Emergence of wheat blast in Bangladesh was caused by a South American lineage of Magnaporthe oryzae

Islam, M. Tofazzal, Croll, Daniel, Gladieux, Pierre, Soanes, Darren M., Persoons, Antoine, Bhattacharjee, Pallab, Hossain, Md. Shaid, Gupta, Dipali Rani, Rahman, Md. Mahbubur, Mahboob, M. Golam, Cook, Nicola, Salam, Moin U., Surovy, Musrat Zahan, Sancho, Vanessa Bueno, Maciel, João Leodato Nunes, Nhanijúnior, Antonio, Castroagudín, Vanina Lilián, de Assis Reges, Juliana T., Ceresini, Paulo Cezar, Ravel, Sebastien, Kellner, Ronny, Fournier, Elisabeth, Tharreau, Didier, Lebrun, Marc-Henri, McDonald, Bruce A., Stitt, Timothy, Swan, Daniel, Talbot, Nicholas J., Saunders, Diane G. O., Win, Joe and Kamoun, Sophien (2016) Emergence of wheat blast in Bangladesh was caused by a South American lineage of Magnaporthe oryzae. BMC Biology, 14. ISSN 1741-7007

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    Abstract

    Background: In February 2016, a new fungal disease was spotted in wheat fields across eight districts in Bangladesh. The epidemic spread to an estimated 15,000 hectares, about 16 % of the cultivated wheat area in Bangladesh, with yield losses reaching up to 100 %. Within weeks of the onset of the epidemic, we performed transcriptome sequencing of symptomatic leaf samples collected directly from Bangladeshi fields. Results: Reinoculation of seedlings with strains isolated from infected wheat grains showed wheat blast symptoms on leaves of wheat but not rice. Our phylogenomic and population genomic analyses revealed that the wheat blast outbreak in Bangladesh was most likely caused by a wheat-infecting South American lineage of the blast fungus Magnaporthe oryzae. Conclusion: Our findings suggest that genomic surveillance can be rapidly applied to monitor plant disease outbreaks and provide valuable information regarding the identity and origin of the infectious agent.

    Item Type: Article
    Additional Information: © 2016 Islam et al. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
    Uncontrolled Keywords: field pathogenomics,wheat blast,phylogenomic analysis,eleusine indica,oryza sativa
    Faculty \ School: Faculty of Science > School of Biological Sciences
    Faculty of Science > School of Computing Sciences
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    Depositing User: Pure Connector
    Date Deposited: 12 Oct 2016 15:00
    Last Modified: 09 Apr 2019 11:36
    URI: https://ueaeprints.uea.ac.uk/id/eprint/60872
    DOI: 10.1186/s12915-016-0309-7

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