Comparative mitogenomics of Hymenoptera reveals evolutionary differences in structure and composition
Merve Nur Aydemir1, Ertan Mahir Korkmaz1
1Department of Molecular Biology and Genetics, Faculty of Science, Sivas Cumhuriyet University, Sivas 58140, Turkey.
International Journal of Biological Macromolecules
|December 21, 2019
Summary
This study reveals significant rearrangements in hymenopteran mitogenomes, linking mutation types to evolutionary patterns and identifying key rearranged gene clusters in insects like Neodiprion sertifer.
Area of Science:
- Evolutionary Biology
- Genomics
- Entomology
Background:
- Hymenopteran mitogenomes are increasingly studied for higher-level phylogeny.
- However, detailed analyses of shared and distinct mitogenome evolution patterns are lacking.
Purpose of the Study:
- To report the first complete mitogenome of Neodiprion sertifer (Symphyta).
- To investigate mitogenome architectures and evolutionary patterns across 73 hymenopteran species.
- To explore the relationship between nucleotide composition, mutation types, and genomic rearrangements.
Main Methods:
- Sequencing and analysis of the Neodiprion sertifer mitogenome.
- Comparative analysis of mitogenome architectures in 73 hymenopteran species.
- Statistical correlation analysis between nucleotide content, mutation bias, and rearrangement events.
Main Results:
- The Neodiprion sertifer mitogenome is the most rearranged in Symphyta, with five events.
- Positive GC skews correlate with high transversion rates, and rearrangements are linked to deamination mutations.
- Rearrangements increase from Symphyta to Aculeata, with transpositions being most common; rrnS-nd2 is the most rearranged cluster.
Conclusions:
- Mitogenome evolution in Hymenoptera is characterized by significant rearrangements influenced by mutation biases.
- Specific gene clusters like rrnS-nd2 are hotspots for recombination.
- Nucleotide bias plays a crucial role in codon and anticodon interactions within these insect mitogenomes.
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