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Mitochondrial control region genetic diversity and maternal ancestry of a Brangus-Ibage cattle populations
Henkes, Luiz Ernani; Silva Júnior, Wilson Araújo; Moraes, José Carlos Ferrugem; Weimer, Tania Azevedo.
Afiliación
  • Henkes, Luiz Ernani; Universidade Federal do Rio Grande do Sul. Departamento de Genética. Porto Alegre. BR
  • Silva Júnior, Wilson Araújo; Centre for Cell-Based Therapy. Ribeirão Preto. BR
  • Moraes, José Carlos Ferrugem; Empresa Brasileira de Pesquisa Agropecuária. Bagé. BR
  • Weimer, Tania Azevedo; Universidade Federal do Rio Grande do Sul. Departamento de Genética. Porto Alegre. BR
Genet. mol. biol ; Genet. mol. biol;28(1): 60-66, Jan.-Mar. 2005. ilus, tab
Article en En | LILACS | ID: lil-399617
Biblioteca responsable: BR26.1
RESUMO
The genetic diversity of 277 nucleotides in the mitochondrial DNA control region (nt 15,964 to 16,240 in reference sequence) was analyzed in crossbreed beef cattle (Brangus-Ibage, 5/8 Bos primigenius taurus x 3/8 Bos primigenius indicus) as well as in some Nellore samples (B. p. indicus). Fifty-seven mutations were found in Brangus-Ibage comprising 18 haplotypes (haplotype diversity, h = 0.851 ± 0.041 and nucleotide diversity, ntd = 0.009 ± 0.006) and 66 in Nellore (h = 1.00 ± 0.27, ntd = 0.014 ± 0.012). These data indicated sequence identities of 99.6 and 92.1 percent between the B. p. taurus' reference sequence and Brangus-Ibage and Nellore, respectively. The comparison of our data with sequence data for 612 individuals recovered from GenBank showed a total of 205 haplotypes defined by 99 polymorphic sites. Most of the variability (53 percent) was due to differentiation within breeds. The phylogenetic tree constructed using the neighbor-joining method showed clearly the well-known dichotomy between B. p. taurus and B. p. indicus. The Brangus-Ibage clustered with B. p. taurus lineages; however, the displacement of Nellore from B. p. indicus branch probably indicates a substantial B. p. taurus maternal ancestry in some Nellore samples (obtained from GenBank) and reflects the primarily male-driven introduction of this breed in Brazil.
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Texto completo: 1 Colección: 01-internacional Base de datos: LILACS Asunto principal: Polimorfismo Genético / ADN Mitocondrial / Bovinos Límite: Animals Idioma: En Revista: Genet. mol. biol Asunto de la revista: GENETICA Año: 2005 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil
Texto completo
Añadir a Mi BVS
Imprimir
XML
Buscar en Google
Texto completo: 1 Colección: 01-internacional Base de datos: LILACS Asunto principal: Polimorfismo Genético / ADN Mitocondrial / Bovinos Límite: Animals Idioma: En Revista: Genet. mol. biol Asunto de la revista: GENETICA Año: 2005 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil