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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
08/09/2016 |
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Data da última atualização: |
27/04/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
D'ÁVILA, L. S.; LEHNER, M. S.; FILIPPI, M. C. C.; SCHEUERMANN, K. K.; DEL PONTE, E. M. |
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Afiliação: |
LEILANE S. D'AVILA, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL, Porto Alegre-RS; MILLER S. LEHNER, UNIVERSIDADE FEDERAL DE VIÇOSA; MARTA CRISTINA CORSI DE FILIPPI, CNPAF; KLAUS K. SCHEUERMANN, EPAGRI; EMERSON M. DEL PONTE, UNIVERSIDADE FEDERAL DE VIÇOSA. |
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Título: |
Genetic structure and mating type analysis of the Pyricularia oryzae population causing widespread epidemics in southern Brazil. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Tropical Plant Pathology, Brasília, DF, v. 41, n. 6, p. 297-305, Oct. 2016. |
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DOI: |
10.1007/s40858-016-0101-9 |
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Idioma: |
Inglês |
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Conteúdo: |
Blast is a major disease of rice in Brazil, the largest rice-producing country outside Asia. This study aimed to assess the genetic structure and mating-type frequency in a contemporary Pyricularia oryzae population, which caused widespread epidemics during the 2012/13 season in the Brazilian lowland subtropical region. Symptomatic leaves and panicles were sampled at flooded rice fields in the states of Rio Grande do Sul (RS, 34 fields) and Santa Catarina (SC, 21 fields). The polymorphism at ten simple sequence repeats (SSR or microsatellite) loci and the presence of MAT1-1 or MAT1-2 idiomorphs were assessed in a population comprised of 187 isolates. Only the MAT1-2 idiomorph was found and 162 genotypes were identified by the SSR analysis. A discriminant analysis of principal components (DAPC) of SSR data resolved four genetic groups, which were strongly associated with the cultivar of origin of the isolates. There was high level of genotypic diversity and moderate level of gene diversity regardless whether isolates were grouped in subpopulations based on geographic region, cultivar host or cultivar within region. While regional subpopulations were weakly differentiated, high genetic differentiation was found among subpopulations comprised of isolates from different cultivars. The data suggest that the rice blast pathogen population in southern Brazil is comprised of clonal lineages that are adapting to specific cultivar hosts. Farmers should avoid the use of susceptible cultivars over large areas and breeders should focus at enlarging the genetic basis of new cultivars. MenosBlast is a major disease of rice in Brazil, the largest rice-producing country outside Asia. This study aimed to assess the genetic structure and mating-type frequency in a contemporary Pyricularia oryzae population, which caused widespread epidemics during the 2012/13 season in the Brazilian lowland subtropical region. Symptomatic leaves and panicles were sampled at flooded rice fields in the states of Rio Grande do Sul (RS, 34 fields) and Santa Catarina (SC, 21 fields). The polymorphism at ten simple sequence repeats (SSR or microsatellite) loci and the presence of MAT1-1 or MAT1-2 idiomorphs were assessed in a population comprised of 187 isolates. Only the MAT1-2 idiomorph was found and 162 genotypes were identified by the SSR analysis. A discriminant analysis of principal components (DAPC) of SSR data resolved four genetic groups, which were strongly associated with the cultivar of origin of the isolates. There was high level of genotypic diversity and moderate level of gene diversity regardless whether isolates were grouped in subpopulations based on geographic region, cultivar host or cultivar within region. While regional subpopulations were weakly differentiated, high genetic differentiation was found among subpopulations comprised of isolates from different cultivars. The data suggest that the rice blast pathogen population in southern Brazil is comprised of clonal lineages that are adapting to specific cultivar hosts. Farmers should avoid the use of susceptible cul... Mostrar Tudo |
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Palavras-Chave: |
Microsatelite. |
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Thesagro: |
Arroz; Brusone; Doença de planta; Fungo; Oryza sativa; Pyricularia oryzae. |
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Thesaurus Nal: |
Blast disease; Magnaporthe oryzae; Microsatellite repeats; Population structure. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
null
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| Registros recuperados : 5 | |
| 1. |  | OLIVEIRA, D. C. R.; CAIMI, D.; JAUNARENA, I.; LORENZO, I.; ARES. G.; DELIZA, R.; GIMÉNEZ, A. Desenvolvimento de leite achocolatado com probiótico utilizando metodologia baseada no consumidor. In: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE ALIMENTOS, 25.; CIGR SESSION 6 INTERNATIONAL TECHNICAL SYMPOSIUM, 10., 2016, Gramado. Alimentação: árvore que sustenta a vida. Anais... Gramado: SBCTA Regional, 2016. Food: the tree that sustains life. 854.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 2. | | OLIVEIRA, D.; CAIMI, D.; JAUNARENA, I.; GIMÉNEZ, A.; ROSENTHAL, A.; ARES, G.; DELIZA, R. Development of a probiotic chocolate flavoured beverage using consumer-based methodologies. In: PANGBORN SENSORY SCIENCE SYMPOSIUM, 12., 2017, Providence, Rhode Island. [Proccedings. Amsterdã: Elsevier, 2017]. P2.1.24. 20 a 24 ago. 2017.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 3. | | CADENA, R. S.; CAIMI, D.; JAUNARENA, I.; LORENZO, I.; VIDAL, L.; ARES, G.; DELIZA, R.; GIMENÉZ, A. Comparison of rapid sensory characterization methodologies for the development of functional yogurts. Food Research International, v. 64, p.446-455, oct. 2014. DOI: 10.1016/j.foodres.2014.07.027| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 4. | | CADENA, R. S.; CAIMI, D.; JAUNARENA, I.; LORENZO, L.; VIDAL, L.; ARES, G.; DELIZA, R.; GIMÉNEZ, A. Comparison of rapid sensory characterization methodologies for the development of functional yogurts. In: EUROPEAN CONFERENCE ON SENSORY AND CONSUMER RESEARCH, 6., 2014, Denmark. Eurosense 2014: A sense of life. Programme Booklet. [S.l.]: Elsevier, 2014. P143.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 5. | | GIMÉNEZ, A. M.; ANTÚNEZ, L.; OLIVEIRA, D.; CAIMI, D.; JAUNARENA, I.; LORENZO, I.; VIDAL. L.; DELIZA, R.; ARES, G. Exploring the use of polarized sensory positioning as a tool in new food product development: the case of probiotic chocolate milk. In: PANGBORN SENSORY SCIENCE SYMPOSIUM, 11., 2015, Gotemburgo. Abstracts... [S. l.]: Elsevier, 2015. Ref. [P1.037].| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| Registros recuperados : 5 | |
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