| Texto completo | |
| Autor(es): |
Congrains, Carlos
[1]
;
Campanini, Emeline B.
[1]
;
Torres, Felipe R.
[1]
;
Rezende, Victor B.
[1]
;
Nakamura, Aline M.
[1]
;
de Oliveira, Janaina L.
[1]
;
Lima, Andre L. A.
[1]
;
Chahad-Ehlers, Samira
[1]
;
Sobrinho, Jr., Iderval S.
[2]
;
de Brito, Reinaldo A.
[1]
Número total de Autores: 10
|
| Afiliação do(s) autor(es): | [1] Univ Fed Sao Carlos, Dept Genet & Evolucao, Sao Carlos, SP - Brazil
[2] Univ Fed Goias, Unidade Jatoba, Jatai, GO - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | GENOME BIOLOGY AND EVOLUTION; v. 10, n. 1, p. 380-395, JAN 2018. |
| Citações Web of Science: | 1 |
| Resumo | |
Several studies have demonstrated that genes differentially expressed between sexes (sex-biased genes) tend to evolve faster than unbiased genes, particularly in males. The reason for this accelerated evolution is not clear, but several explanations have involved adaptive and nonadaptive mechanisms. Furthermore, the differences of sex-biased expression patterns of closely related species are also little explored out of Drosophila. To address the evolutionary processes involved with sex biased expression in species with incipient differentiation, we analyzed male and female transcriptomes of Anastrepha fraterculus and Anastrepha obliqua, a pair of species that have diverged recently, likely in the presence of gene flow. Using these data, we inferred differentiation indexes and evolutionary rates and tested for signals of selection in thousands of genes expressed in head and reproductive transcriptomes from both species. Our results indicate that sex-biased and reproductive-biased genes evolve faster than unbiased genes in both species, which is due to both adaptive pressure and relaxed constraints. Furthermore, among male-biased genes evolving under positive selection, we identified some related to sexual functions such as courtship behavior and fertility. These findings suggest that sex-biased genes may have played important roles in the establishment of reproductive isolation between these species, due to a combination of selection and drift, and unveil a plethora of genetic markers useful for more studies in these species and their differentiation. (AU) | |
| Processo FAPESP: | 12/17160-8 - Evolução molecular da família gênica das proteínas ligantes a odores (OBPs) em moscas-das-frutas do grupo fraterculus |
| Beneficiário: | Emeline Boni Campanini |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 10/20455-4 - Genômica comparada de espécies de moscas-das-frutas do grupo fraterculus. II. A próxima geração |
| Beneficiário: | Reinaldo Otávio Alvarenga Alves de Brito |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |