Prevalence of the SdhC I86F substitution associated with resistance to SDHI fungicides in populations of the Asian soybean rust pathogen in Brazil in recent cropping seasons

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorAgrarian University of Ecuador (UAE)-
Autor(es): dc.contributorFederal University of Santa Maria-
Autor(es): dc.contributorTechnical University of Manabí-
Autor(es): dc.creatorKrug, Loane Dantas-
Autor(es): dc.creatorCeresini, Paulo Cezar-
Autor(es): dc.creatorMoreira, Silvino Intra-
Autor(es): dc.creatorPereira, Davi Jacinto-
Autor(es): dc.creatorde Deus Paes Gonçalves, Lucas Matheus-
Autor(es): dc.creatorAcerbi, Amanda Regina-
Autor(es): dc.creatorde Lima Montan, Rafael Ristori-
Autor(es): dc.creatorLeardine, Gabriela Valério-
Autor(es): dc.creatorde Moura, Suzany Santos-
Autor(es): dc.creatorPortalanza, Diego-
Autor(es): dc.creatorGarcés-Fiallos, Felipe Rafael-
Data de aceite: dc.date.accessioned2025-08-21T18:22:34Z-
Data de disponibilização: dc.date.available2025-08-21T18:22:34Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2025-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s40858-025-00719-y-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/309532-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/309532-
Descrição: dc.descriptionAsian soybean rust (ASR), caused by the fungus Phakopsora pachyrhizi (Pp), is the most important disease of soybean crops in Brazil. For over a decade, disease management has strategically focused on extensive, prophylactic applications of systemic, single-site chemical fungicides with high risk for resistance (especially QoIs and DMIs). Due to widespread resistance to QoIs and DMIs in the country, the efficacy of these site-specific fungicides has significantly decreased, resulting in yield losses below 20%. Since 2013, new succinate dehydrogenase inhibitor (SDHI) fungicides, also site-specific, have been included in the chemical management portfolio for ASR. However, during the 2015/2016 season, Pp isolates with a mutation in the SdhC gene were detected, resulting in the substitution of the amino acid SdhC-I86F at the target site, conferring resistance to SDHI fungicides. Subsequent surveys until 2019 indicate that SDHI resistance has become pervasive in the country. Our study aimed to determine, using specific real-time quantitative PCR (RT qPCR) detection of the SdhC-I86F mutation, the prevalence of this substitution in field populations of the ASR pathogen sampled during the 2020/21 and 2022/23 seasons in different Brazilian states. We obtained 51 Pp samples from Bahia, Goiás, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Paraná, Rio Grande do Sul, and São Paulo. We also determined the EC50 (fungicide concentration sufficient to reduce in vivo ASR severity by 50%) in samples from six distinct pathogen populations where the SdhC-I86F substitution was detected. The SdhC 86F mutant allele associated with SDHI resistance was detected in the majority Pp populations sampled. The six phenotyped populations showed reduced sensitivity to the fungicide fluxapyroxad. We conclude that the SdhC-I86F substitution remained prevalent in the country in recent cropping seasons.-
Descrição: dc.descriptionUniversidade Estadual Paulista-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionDepartment of Crop Protection Agricultural Engineering and Soil São Paulo State University (UNESP)-
Descrição: dc.descriptionResearch Institute Graduate School “Eng. Jacobo Bucaram Ortiz PhD” Environmental Engineering Program Faculty of Agricultural Sciences Agrarian University of Ecuador (UAE), 25 de Julio Av-
Descrição: dc.descriptionCenter of Natural and Exact Sciences Federal University of Santa Maria, RS-
Descrição: dc.descriptionLaboratory of Plant Pathology Experimental Campus La Teodomira Faculty of Agronomic Engineering Technical University of Manabí-
Descrição: dc.descriptionDepartment of Crop Protection Agricultural Engineering and Soil São Paulo State University (UNESP)-
Descrição: dc.descriptionUniversidade Estadual Paulista: 06/2024-
Descrição: dc.descriptionFAPESP: 2017/50456-1-
Descrição: dc.descriptionFAPESP: 2018/21197-0-
Descrição: dc.descriptionFAPESP: 2019/12509-1-
Descrição: dc.descriptionFAPESP: 2020/07611-9-
Descrição: dc.descriptionFAPESP: 2021/03402-9-
Descrição: dc.descriptionCAPES: 775202/2012-
Descrição: dc.descriptionCAPES: 88881.593505/2020-01-
Descrição: dc.descriptionCAPES: 88887.572547/2020-00-
Descrição: dc.descriptionCAPES: Ph.D. scholarships from CAPES studentship Program 001-
Descrição: dc.descriptionCNPq: Pq-1C 311895/2022-0-
Idioma: dc.languageen-
Relação: dc.relationTropical Plant Pathology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectFluxapyroxad-
Palavras-chave: dc.subjectPhakopsora pachyrhizi-
Palavras-chave: dc.subjectSdhC-I86F substitution-
Palavras-chave: dc.subjectSuccinate dehydrogenase inhibitors-
Título: dc.titlePrevalence of the SdhC I86F substitution associated with resistance to SDHI fungicides in populations of the Asian soybean rust pathogen in Brazil in recent cropping seasons-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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