Data/hora: 16/06/2024 10:44:56

Provedor de dados: | 74
País: | Brazil
Título: | Presence of two mitochondrial genomes in the mytilid Perumytilus purpuratus: Phylogenetic evidence for doubly uniparental inheritance
Autores: | Vargas,Jaime; Pérez,Montse; Toro,Jorge; Astorga,Marcela P.
Data: | 2015-06-01
Ano: | 2015
Palavras-chave: | Mytilidae; 16S; COI; Perumytilus; DUI.
Resumo: | This study presents evidence, using sequences of ribosomal 16S and COI mtDNA, for the presence of two mitochondrial genomes in Perumytilus purpuratus. This may be considered evidence of doubly uniparental mtDNA inheritance. The presence of the two types of mitochondrial genomes differentiates females from males. The F genome was found in the somatic and gonadal tissues of females and in the somatic tissues of males; the M genome was found in the gonads and mantle of males only. For the mitochondrial 16S region, ten haplotypes were found for the F genome (nucleotide diversity 0.004), and 7 haplotypes for the M genome (nucleotide diversity 0.001), with a distance Dxy of 0.125 and divergence Kxy of 60.33%. For the COI gene 17 haplotypes were found for the F genome (nucleotide diversity 0.009), and 10 haplotypes for the M genome (nucleotide diversity 0.010), with a genetic distance Dxy of 0.184 and divergence Kxy of 99.97%. Our results report the presence of two well-differentiated, sex-specific types of mitochondrial genome (one present in the male gonad, the other in the female gonad), implying the presence of DUI in P. purpuratus. These results indicate that care must be taken in phylogenetic comparisons using mtDNA sequences of P. purpuratus without considering the sex of the individuals.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000200173
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47573822201420140262
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.38 n.2 2015
Fonte: | info:eu-repo/semantics/openAccess