[PROVISIONAL] Mitochondrial genomes of genus Atta (Formicidae: Myrmicinae) reveal high gene organization and giant intergenic spacers

AUTOR(ES)
FONTE

Genet. Mol. Biol.

DATA DE PUBLICAÇÃO

10/06/2019

RESUMO

Abstract The ants of the genus Atta are considered an important pest to agriculture in Latin América, although, Atta species are important contributors to ecosystem functions in the various habitats in which they occur. Next-generation sequencing product millions or billions of short reads, however, is necessary to applied methods for assembly of the genomes. The aim of this study was to assembly four complete mitochondrial genomes of the genus Atta, construct the phylogenomic tree and analyze the gene content, order and organization. The mitogenomes of A. colombica, A. opaciceps, A. texana, and A. sexdens rubropilosa contained 18,392; 19,257; 19,709 and 19,748 bp, respectively. For A. opaciceps, A. colombica and A. texana, the mitogenomes showed a typical genome for an insect, which showed 13 protein-coding genes, 22 tRNA, and 2 rRNA, which the genes displayed in the same order. Analysis for intergenic spacer regions showed that Atta intergenic spacers are larger than those of the outgroups. The phylogenomic analyses showed similar topologies with previous phylogenetic analyses using partial genes cytochrome oxidase I, of which sowed high clade support values. We conclude that Atta mitogenomes are characterized by high conservation in gene order and have giant intergenic spacers in the genus Atta.

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