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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
31/08/2005 |
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Data da última atualização: |
16/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RIBEIRO, S. G.; AMBROZEVÍCIUS, L. P.; ÁVILA, A. C.; BEZERRA, I. C.; CALEGARIO, R. F.; FERNANDES, J. J.; LIMA, M. F.; MLLO, R. N. de; ROCHA, H.; ZERBINI, F. M. |
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Afiliação: |
MIRTES FREITAS LIMA, CPATSA. |
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Título: |
Distribution and genetic diversity of tomato-infecting begomoviruses in Brazil. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Archives of Virology, New York, v. 148, p. 281-295, 2003. |
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Idioma: |
Inglês |
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Conteúdo: |
Tomato-infecting begomoviruses have been reported throughout Brazil since the introduction of the B biotype of Bemisia tabaci. Here, we report a large scale survey on the distribution and genetic diversity of tomato-infecting begomoviruses. Tomato samples withtypical begomovirus symptoms were collected in seven different states, comprising the major tomato growing areas of the country. Viruses were detected by polymerase chain reaction (PCR) using universal primers for the genus Begomovirus. PCR-amplified fragments were cloned and sequenced. Based on sequence comparisons and phylogenetic analyses, at least seven previously undescribed species of begomoviruses were found. Four of the new viruses were found exclusively in the Southeastern states, two exclusively in the Northeastern states, and one was found in both regions. Sequence comparisons reveal strong evidence of recombination among the Brazilian begomoviruses.Together, the results indicate the existence of a high degree of pre-existing genetic diversity among tomato-infecting begomoviruses in Brazil and suggest that these viruses have emerged after being transferred from natural hosts to tomatoes, due to he introduction into Brazil of a novel polyfagous biotype of the whitefly vector. |
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Palavras-Chave: |
Diversidade genética; Geminivirus; Tomato. |
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Thesagro: |
Doença; Tomate; Vírus. |
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Thesaurus Nal: |
Begomovirus. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/177022/1/Separata-00267.pdf
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Marc: |
LEADER 02089naa a2200313 a 4500
001 1155962
005 2018-05-16
008 2003 bl uuuu u00u1 u #d
100 1 $aRIBEIRO, S. G.
245 $aDistribution and genetic diversity of tomato-infecting begomoviruses in Brazil.
260 $c2003
520 $aTomato-infecting begomoviruses have been reported throughout Brazil since the introduction of the B biotype of Bemisia tabaci. Here, we report a large scale survey on the distribution and genetic diversity of tomato-infecting begomoviruses. Tomato samples withtypical begomovirus symptoms were collected in seven different states, comprising the major tomato growing areas of the country. Viruses were detected by polymerase chain reaction (PCR) using universal primers for the genus Begomovirus. PCR-amplified fragments were cloned and sequenced. Based on sequence comparisons and phylogenetic analyses, at least seven previously undescribed species of begomoviruses were found. Four of the new viruses were found exclusively in the Southeastern states, two exclusively in the Northeastern states, and one was found in both regions. Sequence comparisons reveal strong evidence of recombination among the Brazilian begomoviruses.Together, the results indicate the existence of a high degree of pre-existing genetic diversity among tomato-infecting begomoviruses in Brazil and suggest that these viruses have emerged after being transferred from natural hosts to tomatoes, due to he introduction into Brazil of a novel polyfagous biotype of the whitefly vector.
650 $aBegomovirus
650 $aDoença
650 $aTomate
650 $aVírus
653 $aDiversidade genética
653 $aGeminivirus
653 $aTomato
700 1 $aAMBROZEVÍCIUS, L. P.
700 1 $aÁVILA, A. C.
700 1 $aBEZERRA, I. C.
700 1 $aCALEGARIO, R. F.
700 1 $aFERNANDES, J. J.
700 1 $aLIMA, M. F.
700 1 $aMLLO, R. N. de
700 1 $aROCHA, H.
700 1 $aZERBINI, F. M.
773 $tArchives of Virology, New York$gv. 148, p. 281-295, 2003.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
28/01/2013 |
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Data da última atualização: |
18/06/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
COSTA, J. L.; JESUS, O. N. de; OLIVEIRA, G. A. F.; OLIVEIRA, E. J. de. |
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Afiliação: |
JULIANA LELES COSTA, UFRB; ONILDO NUNES DE JESUS, CNPMF; GILMARA ALVARENGA FACHARDO OLIVEIRA, UFRB; EDER JORGE DE OLIVEIRA, CNPMF. |
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Título: |
Effect of selection on genetic variability in yellow passion fruit. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, v. 12, p. 253-260, 2012. |
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ISSN: |
1984-7033 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to evaluate the genetic diversity in improved (IG) and unimproved germplasm (UIG) of yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg), based on ISSR (Inter Simple Sequence Repeat) markers. The genotypes were grouped by neighbor joining clustering and principal component analysis. Regardless of the genotype, a high number of polymorphic bands was observed, aside from several specific fragments of the groups, according to the level of improvement. Unimproved genotypes had a higher number of polymorphic fragments. The hierarchical and principal component clustering coincided in the formation of two rather distinct groups (IG and UIG). The molecular analysis of variance to check the differentiation between groups showed 57 and 43% of the variation within and between groups, respectively. This study demonstrated the potential of ISSR to determine molecular polymorphism in yellow passion fruit and that breeding has narrowed the genetic variability. |
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Palavras-Chave: |
Passion fruit. |
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Thesaurus NAL: |
breeding. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01541naa a2200193 a 4500
001 1946669
005 2013-06-18
008 2012 bl uuuu u00u1 u #d
022 $a1984-7033
100 1 $aCOSTA, J. L.
245 $aEffect of selection on genetic variability in yellow passion fruit.
260 $c2012
520 $aThe objective of this study was to evaluate the genetic diversity in improved (IG) and unimproved germplasm (UIG) of yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg), based on ISSR (Inter Simple Sequence Repeat) markers. The genotypes were grouped by neighbor joining clustering and principal component analysis. Regardless of the genotype, a high number of polymorphic bands was observed, aside from several specific fragments of the groups, according to the level of improvement. Unimproved genotypes had a higher number of polymorphic fragments. The hierarchical and principal component clustering coincided in the formation of two rather distinct groups (IG and UIG). The molecular analysis of variance to check the differentiation between groups showed 57 and 43% of the variation within and between groups, respectively. This study demonstrated the potential of ISSR to determine molecular polymorphism in yellow passion fruit and that breeding has narrowed the genetic variability.
650 $abreeding
653 $aPassion fruit
700 1 $aJESUS, O. N. de
700 1 $aOLIVEIRA, G. A. F.
700 1 $aOLIVEIRA, E. J. de
773 $tCrop Breeding and Applied Biotechnology$gv. 12, p. 253-260, 2012.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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