| Texto completo | |
| Autor(es): Mostrar menos - |
Francoso, Elaine
;
Zuntini, Alexandre Rizzo
;
Ricardo, Paulo Cseri
;
Santos, Priscila Karla Ferreira
;
Araujo, Natalia de Souza
;
Silva, Joao Paulo Naldi
;
Goncalves, Leonardo Tresoldi
;
Brito, Rute
;
Gloag, Rosalyn
;
Taylor, Benjamin A.
;
Harpur, Brock A.
;
Oldroyd, Benjamin P.
;
Brown, Mark J. F.
;
Arias, Maria Cristina
Número total de Autores: 14
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| Tipo de documento: | Artigo Científico |
| Fonte: | International Journal of Biological Macromolecules; v. 242, p. 9-pg., 2023-05-05. |
| Resumo | |
The extreme conservation of mitochondrial genomes in metazoans poses a significant challenge to understanding mitogenome evolution. However, the presence of variation in gene order or genome structure, found in a small number of taxa, can provide unique insights into this evolution. Previous work on two stingless bees in the genus Tetragonula (T. carbonaria and T. hockingsi) revealed highly divergent CO1 regions between them and when compared to the bees from the same tribe (Meliponini), indicating rapid evolution. Using mtDNA isolation and Illumina sequencing, we elucidated the mitogenomes of both species. In both species, there has been a dupli-cation of the whole mitogenome to give a total genome size of 30,666 bp in T. carbonaria; and 30,662 bp in T. hockingsi. These duplicated genomes present a circular structure with two identical and mirrored copies of all 13 protein coding genes and 22 tRNAs, with the exception of a few tRNAs that are present as single copies. In addition, the mitogenomes are characterized by rearrangements of two block of genes. We believe that rapid evolution is present in the whole Indo-Malay/Australasian group of Meliponini but is extraordinarily elevated in T. carbonaria and T. hockingsi, probably due to founder effect, low effective population size and the mitogenome duplication. All these features -rapid evolution, rearrangements, and duplication -deviate significantly from the vast majority of the mitogenomes described so far, making the mitogenomes of Tetragonula unique opportunities to address fundamental questions of mitogenome function and evolution. (AU) | |
| Processo FAPESP: | 14/25023-6 - Numts em Meliponini (Hymenoptera: Apidae): prospecção genômica, origem e evolução |
| Beneficiário: | Elaine Aparecida Françoso |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 16/24669-5 - Estudos genômicos e evolutivos em abelhas |
| Beneficiário: | Maria Cristina Arias |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |