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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
28/10/2015 |
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Data da última atualização: |
18/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CABRAL, P. G. C.; MACIEL-ZAMBOLIM, E.; OLIVEIRA, S. A. S. de; CAIXETA, E. T.; ZAMBOLIM, L. |
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Afiliação: |
P. G. C. CABRAL, UFV; E. MACIEL-ZAMBOLIM, UFV; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF; EVELINE TEIXEIRA CAIXETA, SAPC; L. ZAMBOLIM, UFV. |
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Título: |
Genetic diversity and structure of Hemileia vastatrix populations on Coffea spp. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Plant Pathology, 2015. |
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ISSN: |
1365-3059 |
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DOI: |
10.1111/ppa.12411 |
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Idioma: |
Português |
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Conteúdo: |
Coffee leaf rust is the most limiting disease for coffee cultivation in Brazil. Despite its importance, relatively little is known about the genetic diversity of Hemileia vastatrix, the rust causal agent. In this work, the DNA from 112 monopustule isolates from different geographic locations and coffee genotypes were analysed by amplified fragment length polymorphisms (AFLP). The objectives were to assess the influence of the host and geographic origin on the diversity and population differentiation in H. vastatrix. The fungal population showed a low level of genotypic diversity. Gene diversity (h) was 0027 and the hypothesis of random mating in the total population was rejected, but evidence for recombination was found for two subpopulations (São Paulo and Parana). The analysis of molecular variance revealed that 90% of the genetic distribution of the pathogen occurs among isolates within the subpopulation (states or host of origin). There was no correlation between geographic and genetic distance (r = 0024, P = 074), which together with the high number of migrants and the low degree of differentiation in populations of H. vastatrix, is consistent with the fact that the inoculum is probably easily dispersed by wind over long distances, allowing dispersal of the pathogen among coffee growing areas in Brazil. Therefore, it is difficult to predict the durability of resistant sources to coffee rust. The recommendation for the breeding programmes is thus to incorporate multigenic resistance as a control strategy. MenosCoffee leaf rust is the most limiting disease for coffee cultivation in Brazil. Despite its importance, relatively little is known about the genetic diversity of Hemileia vastatrix, the rust causal agent. In this work, the DNA from 112 monopustule isolates from different geographic locations and coffee genotypes were analysed by amplified fragment length polymorphisms (AFLP). The objectives were to assess the influence of the host and geographic origin on the diversity and population differentiation in H. vastatrix. The fungal population showed a low level of genotypic diversity. Gene diversity (h) was 0027 and the hypothesis of random mating in the total population was rejected, but evidence for recombination was found for two subpopulations (São Paulo and Parana). The analysis of molecular variance revealed that 90% of the genetic distribution of the pathogen occurs among isolates within the subpopulation (states or host of origin). There was no correlation between geographic and genetic distance (r = 0024, P = 074), which together with the high number of migrants and the low degree of differentiation in populations of H. vastatrix, is consistent with the fact that the inoculum is probably easily dispersed by wind over long distances, allowing dispersal of the pathogen among coffee growing areas in Brazil. Therefore, it is difficult to predict the durability of resistant sources to coffee rust. The recommendation for the breeding programmes is thus to incorporate multigeni... Mostrar Tudo |
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Thesagro: |
Café; Variação genética. |
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Thesaurus Nal: |
Coffea. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02168naa a2200229 a 4500
001 2027450
005 2023-05-18
008 2015 bl uuuu u00u1 u #d
022 $a1365-3059
024 7 $a10.1111/ppa.12411$2DOI
100 1 $aCABRAL, P. G. C.
245 $aGenetic diversity and structure of Hemileia vastatrix populations on Coffea spp.$h[electronic resource]
260 $c2015
520 $aCoffee leaf rust is the most limiting disease for coffee cultivation in Brazil. Despite its importance, relatively little is known about the genetic diversity of Hemileia vastatrix, the rust causal agent. In this work, the DNA from 112 monopustule isolates from different geographic locations and coffee genotypes were analysed by amplified fragment length polymorphisms (AFLP). The objectives were to assess the influence of the host and geographic origin on the diversity and population differentiation in H. vastatrix. The fungal population showed a low level of genotypic diversity. Gene diversity (h) was 0027 and the hypothesis of random mating in the total population was rejected, but evidence for recombination was found for two subpopulations (São Paulo and Parana). The analysis of molecular variance revealed that 90% of the genetic distribution of the pathogen occurs among isolates within the subpopulation (states or host of origin). There was no correlation between geographic and genetic distance (r = 0024, P = 074), which together with the high number of migrants and the low degree of differentiation in populations of H. vastatrix, is consistent with the fact that the inoculum is probably easily dispersed by wind over long distances, allowing dispersal of the pathogen among coffee growing areas in Brazil. Therefore, it is difficult to predict the durability of resistant sources to coffee rust. The recommendation for the breeding programmes is thus to incorporate multigenic resistance as a control strategy.
650 $aCoffea
650 $aCafé
650 $aVariação genética
700 1 $aMACIEL-ZAMBOLIM, E.
700 1 $aOLIVEIRA, S. A. S. de
700 1 $aCAIXETA, E. T.
700 1 $aZAMBOLIM, L.
773 $tPlant Pathology, 2015.
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| 61. |  | FERREIRA, E.; MARTINS, J. F. da S.; SILVEIRA NETO, S.; CARVALHO, J. R. P. de. Avaliação do efeito de populações de insetos sobre a produtividade do arroz de sequeiro pelo uso de regressão múltipla. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 17, n. 5, p. 671-675, maio 1982.| Tipo: Artigo em Periódico Indexado |
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| 66. | | MARTINS, J. J.; PERES, E. R.; TAFERNABERRI, V. J.; MONTARDO, D. P. Avaliação da produção de forragem de aveia preta (Avena strigosa Schreb) na Campanha gaúcha. In: JORNADA DE PÓS-GRADUAÇÃO E PESQUISA, 7.; MOSTRA DE INICIAÇÃO CIENTÍFICA, 7.; MOSTRA DE INICIAÇÃO CIENTÍFICA JÚNIOR, 5.; MINICURSOS, 2009, Bagé. Anais... Bagé: LEB, 2009. 1 CD-ROM. Título da capa: Anais CONGREGA URCAMP 2009. Código 236.| Tipo: Resumo em Anais de Congresso |
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| 68. | | PERES, E. R.; MARTINS, J. J.; MONTARDO, D. P.; JANK, L. Avaliação de Panicum maximum na região da Campanha do Rio Grande do Sul. In: SALÃO INTERNACIONAL INTEGRADO DE ENSINO, PESQUISA E EXTENSÃO, 1.; MOSTRA CIENTÍFICA INTERNACIONAL, 9.; SALÃO INTERNACIONAL DE EXTENSÃO, 2.; SALÃO INTERNACIONAL DE ENSINO, 1., 2009, Uruguaiana. Ciência & sociedade. Bagé: Unipampa; Uruguaiana: PUCRS; Paso de dos Libres: Universidad Cuenta del Plata, 2009. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| Registros recuperados : 490 | |
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| 1. | | 1100056, CANADIAN PLANT DISEASE SURVEY, Research Branch Agriculture Canada, Ottawa-Canada
Biblioteca(s): Catálogo Coletivo de Periódicos Embrapa; Embrapa Agropecuária Oeste; Embrapa Arroz e Feijão; Embrapa Cerrados; Embrapa Clima Temperado; Embrapa Hortaliças; Embrapa Trigo; Embrapa Uva e Vinho. | |
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