detecção e análise da variabilidade de seqüências do banana streak virus (bsv) em bananeiras no brasil detection and analysis of banana streak virus (bsv) sequences variability of banana from brazil
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2006
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Abstract
A técnica de PCR utilizando-se "primers" degenerados para o gênero Badnavirus foi utilizada para a detecção e análise da variabilidade de seqüências do Banana streak virus (BSV) provenientes de bananeiras. A partir desta metodologia seqüências do vírus puderam ser detectadas em cultivares diplóides (AA), triplóides (AAA; AAB) e tetraplóides (AAAB). Foram encontrados quatro padrões de seqüência do BSV (estirpes BSVBR-1, BSVBR-2, BSVBR-3 e BSVBR-4), diferenciadas através da análise do perfil eletroforético das amostras amplificadas. A estirpe BSVBR-1 prevalece nos estados do Acre, Amazonas, Bahia, Ceará, Goiás, Minas Gerais, Piauí, Rio de Janeiro, Rondônia, Santa Catarina, e São Paulo, enquanto que, a estirpe BSVBR-2 foi encontrada em amostras oriundas do Amazonas e do Ceará. As estirpes BSVBR-3 e BSVBR-4 foram encontradas apenas no Ceará. Este trabalho revela a presença de diferentes estirpes do BSV no Brasil, bem como a existência de cultivares de bananeiras sadias e livres de seqüências virais do BSV integradas ao seu genoma.
PCR assay using degenerate primers, designed to Badnavirus genus, was used to detect and analyse the variability of BSV strains sequences from banana. The virus was detected in diploid (AA), triploids (AAA; AAB) and tetraploids (AAAB) banana cultivars. Four BSV sequences patterns (BSVBR-1, BSVBR-2, BSVBR-3 and BSVBR-4 strains) were found, and distinguished by eletrophoresis. The strain BSVBR-1 was found in the states of Acre, Amazonas, Bahia, Ceará, Goiás, Minas Gerais, Piauí, Rio de Janeiro, Rondônia, Santa Catarina and São Paulo, while BSVBR-2 strain was detected in the states of Amazonas and Ceará. BSVBR-3 and BSVBR-4 strains were found only in the state of Ceará. This work demonstrated the presence of different BSV strains in Brazil and the existence of health banana cultivars as well as cultivars free of BSV integrated sequences.
PCR assay using degenerate primers, designed to Badnavirus genus, was used to detect and analyse the variability of BSV strains sequences from banana. The virus was detected in diploid (AA), triploids (AAA; AAB) and tetraploids (AAAB) banana cultivars. Four BSV sequences patterns (BSVBR-1, BSVBR-2, BSVBR-3 and BSVBR-4 strains) were found, and distinguished by eletrophoresis. The strain BSVBR-1 was found in the states of Acre, Amazonas, Bahia, Ceará, Goiás, Minas Gerais, Piauí, Rio de Janeiro, Rondônia, Santa Catarina and São Paulo, while BSVBR-2 strain was detected in the states of Amazonas and Ceará. BSVBR-3 and BSVBR-4 strains were found only in the state of Ceará. This work demonstrated the presence of different BSV strains in Brazil and the existence of health banana cultivars as well as cultivars free of BSV integrated sequences.
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| Authors | ;Daniel Figueiredo;Paulo Meissner Filho;Sebastião Silva Neto;Paulo Brioso |
| Journal | research on chemical intermediates |
| Year | 2006 |
| DOI |
10.1590/S0100-54052006000200004
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