Complete sequence of mitochondrial DNA of a deep-sea holothurian species of the genus Synallactes (Synallactida: Synallactidae)

Meijie Liao; Bin Li; Ning Xiao; Miao Kong; Yingeng Wang; Jinjin Wang; Xiaojun Rong; Zheng Zhang; Yongxiang Yu

doi:10.1080/23802359.2020.1787266

Complete sequence of mitochondrial DNA of a deep-sea holothurian species of the genus Synallactes (Synallactida: Synallactidae)

Mitochondrial DNA B Resour. 2020 Jul 9;5(3):2699-2700. doi: 10.1080/23802359.2020.1787266.

Authors

Meijie Liao^{1

2}, Bin Li^{1

2}, Ning Xiao^{3

4

5}, Miao Kong^{1

2}, Yingeng Wang^{1

2}, Jinjin Wang^{1

2}, Xiaojun Rong^{1

2}, Zheng Zhang^{1

2}, Yongxiang Yu^{1

2}

Affiliations

¹ Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.
² Qingdao National Laboratory for Marine Science and Technology, Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao, China.
³ Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.
⁴ Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
⁵ Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China.

Abstract

One complete mitochondrial genome (mitogenome) was determined for a deep-sea holothurian species of the genus Synallactes (Synallactida: Synallactidae). The mitochondrial genome size of the sea cucumber was 15,920 bp. The sequence contains 2 ribosomal RNA genes (12S and 16S), 22 transfer RNA genes, and 13 protein-coding genes, as found in most previously determined holothurian mitogenomes. The A + T content of the complete mitochondrial genome sequence was 64.45%. The base composition showed a tendency of AT. The resulted maximum likelihood (ML) tree of Holothuroidea supported that Synallactes sp. is a species of Synallactida.

Keywords: Holothuroidea; Synallactes sp.; Synallactida; mitogenome.

Grants and funding

This work was supported by the National Key R&D Program of China (2018YFD0900305), the Scientific and Technological Innovation Project Financially Supported by Qingdao National Laboratory for Marine Science and Technology (201ASKJ14), and Central Public-interest Scientific Institution Basal Research Fund, CAFS (2020TD40).