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 | Acesso ao texto completo restrito à biblioteca da Embrapa Café. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
29/09/2020 |
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Data da última atualização: |
07/10/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MAIA, T. A.; MACEL-ZAMBOLIM, E.; CAIXETA, E. T.; MIZUBUTI, E. S. G.; ZAMBOLIM, L. |
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Afiliação: |
T. A. MAIA, Departamento de Fitopatologia/BIOAGRO, Universidade Federal de Viçosa; E. Maciel-Zambolim, Departamento de Fitopatologia/BIOAGRO, Universidade Federal de Viçosa; EVELINE TEIXEIRA CAIXETA MOURA, CNPCa; E. S. G. Mizubuti, Departamento de Fitopatologia/BIOAGRO, Universidade Federal de Viçosa; L. Zambolim, Departamento de Fitopatologia/BIOAGRO, Universidade Federal de Viçosa, Viçosa. |
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Título: |
The population structure of Hemileia vastatrix in Brazil inferred from AFLP. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Australasian Plant Pathology, v. 42, n. 5 , p. 533-542, 2013. |
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DOI: |
https://10.1007/s13313-013-0213-3 |
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Idioma: |
Inglês |
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Conteúdo: |
Efforts to obtain durable resistant cultivars to coffee leaf rust have a long history of disappointment because of the lack of information on the Hemileia vastatrix evolutionary potential. In this study, the AFLP marker was used to analyze the genetic structure of a field population of H. vastatrix from different coffee genotypes cultivated in a wide geographic region of Brazil?s main production areas. A total of 91 isolates were sampled from genotypes of Coffea arabica, C. canephora and Híbrido de Timor/Icatu derivatives. Each isolate exhibited unique multilocus AFLP genotypes with no identical isolates obtained from the same geographical and host origins. This finding was corroborated by a small correlation between genetic similarity and geographic distance (Rxy=0.31, P=0.23). The analyses showed a low genetic differentiation (GST=0.026) between the populations defined by a host and AMOVA analysis, most of the genetic variance (99.56 %) was attributed to differences within populations. In addition, based on the index of association (IA), the random mating possibility was not rejected (IA=0.225, P=0.123) for the population of H. vastatrix derived from C. canephora. This result suggested that H. vastatrix in Brazil behaves as a large undifferentiated population with a high level of genotypic diversity that is unstructured with regard to its geographic and host origins. |
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Palavras-Chave: |
Coffee leaf rust; Durable resistance. |
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Thesagro: |
Coffea Arábica; Coffea Canephora. |
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Thesaurus Nal: |
Population genetics. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02128naa a2200241 a 4500
001 2125183
005 2020-10-07
008 2013 bl uuuu u00u1 u #d
024 7 $ahttps://10.1007/s13313-013-0213-3$2DOI
100 1 $aMAIA, T. A.
245 $aThe population structure of Hemileia vastatrix in Brazil inferred from AFLP.$h[electronic resource]
260 $c2013
520 $aEfforts to obtain durable resistant cultivars to coffee leaf rust have a long history of disappointment because of the lack of information on the Hemileia vastatrix evolutionary potential. In this study, the AFLP marker was used to analyze the genetic structure of a field population of H. vastatrix from different coffee genotypes cultivated in a wide geographic region of Brazil?s main production areas. A total of 91 isolates were sampled from genotypes of Coffea arabica, C. canephora and Híbrido de Timor/Icatu derivatives. Each isolate exhibited unique multilocus AFLP genotypes with no identical isolates obtained from the same geographical and host origins. This finding was corroborated by a small correlation between genetic similarity and geographic distance (Rxy=0.31, P=0.23). The analyses showed a low genetic differentiation (GST=0.026) between the populations defined by a host and AMOVA analysis, most of the genetic variance (99.56 %) was attributed to differences within populations. In addition, based on the index of association (IA), the random mating possibility was not rejected (IA=0.225, P=0.123) for the population of H. vastatrix derived from C. canephora. This result suggested that H. vastatrix in Brazil behaves as a large undifferentiated population with a high level of genotypic diversity that is unstructured with regard to its geographic and host origins.
650 $aPopulation genetics
650 $aCoffea Arábica
650 $aCoffea Canephora
653 $aCoffee leaf rust
653 $aDurable resistance
700 1 $aMACEL-ZAMBOLIM, E.
700 1 $aCAIXETA, E. T.
700 1 $aMIZUBUTI, E. S. G.
700 1 $aZAMBOLIM, L.
773 $tAustralasian Plant Pathology$gv. 42, n. 5 , p. 533-542, 2013.
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