Comparative Analysis of Complete Mitochondrial Genome of Ariosoma meeki (Jordan and Snider, 1900), Revealing Gene Rearrangement and the Phylogenetic Relationships of Anguilliformes

Youkun Huang; Kehua Zhu; Yawei Yang; Liancheng Fang; Zhaowen Liu; Jia Ye; Caiyi Jia; Jianbin Chen; Hui Jiang

doi:10.3390/biology12030348

Comparative Analysis of Complete Mitochondrial Genome of Ariosoma meeki (Jordan and Snider, 1900), Revealing Gene Rearrangement and the Phylogenetic Relationships of Anguilliformes

Biology (Basel). 2023 Feb 22;12(3):348. doi: 10.3390/biology12030348.

Authors

Youkun Huang¹, Kehua Zhu², Yawei Yang¹, Liancheng Fang¹, Zhaowen Liu^{1

3}, Jia Ye¹, Caiyi Jia¹, Jianbin Chen³, Hui Jiang⁴

Affiliations

¹ Anhui Provincial Key Laboratory for Quality and Safety of Agri-Products, School of Resource and Environment, Anhui Agricultural University, Hefei 230036, China.
² State Key Laboratory of Estuarine and Coastal Research, Institute of Eco-Chongming, East China Normal University, Shanghai 200241, China.
³ School of Materials and Environmental Engineering, Chizhou University, Chizhou 247000, China.
⁴ College of Life Sciences, Hainan Normal University, Haikou 571158, China.

Abstract

The mitochondrial genome structure of a teleostean group is generally considered to be conservative. However, two types of gene arrangements have been identified in the mitogenomes of Anguilliformes. In this study, we report the complete mitochondrial genome of Ariosoma meeki (Anguilliformes (Congridae)). For this research, first, the mitochondrial genome structure and composition were analyzed. As opposed to the typical gene arrangement pattern in other Anguilliformes species, the mitogenome of A. meeki has undergone gene rearrangement. The ND6 and the conjoint tRNA-Glu genes were translocated to the location between the tRNA-Thr and tRNA-Pro genes, and a duplicated D-loop region was translocated to move upstream of the ND6 gene. Second, comparative genomic analysis was carried out between the mitogenomes of A. meeki and Ariosoma shiroanago. The gene arrangement between them was found to be highly consistent, against the published A. meeki mitogenomes. Third, we reproduced the possible evolutionary process of gene rearrangement in Ariosoma mitogenomes and attributed such an occurrence to tandem repeat and random loss events. Fourth, a phylogenetic analysis of Anguilliformes was conducted, and the clustering results supported the non-monophyly hypothesis regarding the Congridae. This study is expected to provide a new perspective on the A. meeki mitogenome and lay the foundation for the further exploration of gene rearrangement mechanisms.

Keywords: Anguilliformes; Ariosoma meeki; gene rearrangement; mitochondrial genome; phylogenetic construction.

Grants and funding

This work was financially supported by the Project of Materials and Chemical Engineering First-class Undergraduate Talent Demonstration and Leading Base (2020rcsfjd28), the Natural Science Foundation of the Higher Education Institutions of Anhui Province (KJ2021A1132, KJ2019A0865), Key Discipline of Materials Science and Engineering, Chizhou University (czxyylxk03) and School-level key projects of Chizhou College (CZ2021ZRZ12).