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

Islam M. Totazzal, 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 Sébastien, 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, Kamoun Sophien. 2016. Emergence of wheat blast in Bangladesh was caused by a South American lineage of Magnaporthe oryzae. BMC Biology, 14 (84), 11 p.

Quartile : Outlier, Sujet : BIOLOGY

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Résumé : 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.

Mots-clés Agrovoc : Magnaporthe, Oryza sativa, Eleusine indica, Triticum, épidémiologie, surveillance épidémiologique, surveillance des cultures, Enquête pathologique, génomique, phylogénie, Transcription génique, génétique des populations, distribution géographique, provenance

Mots-clés géographiques Agrovoc : Bangladesh, Amérique du Sud

Mots-clés complémentaires : Magnaporthe oryzae

Classification Agris : H20 - Maladies des plantes

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Auteurs et affiliations

• Islam M. Totazzal, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BGD)
• Croll Daniel, ETH (CHE)
• Gladieux Pierre, INRA (FRA)
• Soanes Darren M., University of Exeter (GBR)
• Persoons Antoine, Earlham Institute (GBR)
• Bhattacharjee Pallab, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BGD)
• Hossain Md. Shaid, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BGD)
• Gupta Dipali Rani, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BGD)
• Rahman Md Mahbubur, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BGD)
• Mahboob M. Golam, Bangladesh Agricultural Research Institute (BGD)
• Cook Nicola, Earlham Institute (GBR)
• Salam Moin U., Western Australian Department of Agriculture (AUS)
• Surovy Musrat Zahan, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BGD)
• Sancho Vanessa Bueno, Earlham Institute (GBR)
• Maciel João Leodato Nunes, EMBRAPA (BRA)
• NhaniJúnior Antonio, EMBRAPA (BRA)
• Castroagudín Vanina Lilián, USP (BRA)
• de Assis Reges Juliana T., USP (BRA)
• Ceresini Paulo Cezar, USP (BRA)
• Ravel Sébastien, CIRAD-BIOS-UMR BGPI (FRA) ORCID: 0000-0001-6663-782X
• Kellner Ronny, MPIZ (DEU)
• Fournier Elisabeth, INRA (FRA)
• Tharreau Didier, CIRAD-BIOS-UMR BGPI (FRA) ORCID: 0000-0003-3961-6120
• Lebrun Marc-Henri, INRA (FRA)
• McDonald Bruce A., ETH (CHE)
• Stitt Timothy, Earlham Institute (GBR)
• Swan Daniel, Earlham Institute (GBR)
• Talbot Nicholas J., University of Exeter (GBR)
• Saunders Diane G.O., Earlham Institute (GBR)
• Win Joe, The Sainsbury Laboratory (GBR)
• Kamoun Sophien, The Sainsbury Laboratory (GBR)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/582076/)

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