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

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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 ; Nunes Maciel, Joao Leodato ; NhaniJunior, Antonio ; Castroagudin, Vanina Lilian ; 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 ; Kamoun, Sophien

• Tipo de documento: Artigo Científico
• Fonte: BMC Biology; v. 14, OCT 3 2016.
• Citações Web of Science: 73

Resumo

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. (AU)

• Processo FAPESP: 13/10655-4 - Desvendando a origem local da brusone do trigo (Magnaporthe oryzae) no Centro Sul do Brasil e evidências da emergência de resistência a fungicidas estrobilurinas em populações do patógeno
• Beneficiário: Paulo Cezar Ceresini
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 15/10453-8 - A emergência de Pyricularia tritici sp. Nov. como patógeno da brusone do trigo no Brasil: especiação simpátrica inferida por filogenia multiloci, espectro de patogenicidade e evolução de genes de virulência
• Beneficiário: Paulo Cezar Ceresini
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/25904-2 - A emergência de Pyricularia tritici sp. Nov. como patógeno da brusone do trigo no Brasil: especiação simpátrica inferida por filogenia multiloci, espectro de patogenicidade e evolução de genes de virulência
• Beneficiário: Vanina Lilián Castroagudin
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado