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The first high-quality chromosome-level genome of Eretmochelys imbricata using HiFi and Hi-C data.

ABSTRACT: Eretmochelys imbricata, a critically endangered sea turtle inhabiting tropical oceans and protected across the world, had an unknown genome sequence until now. In this study, we used HiFi reads and Hi-C technology to assemble a high-quality, chromosome-level genome of E. imbricata. The genome size was 2,138.26 Mb, with contig N50 length of 123.49 Mb and scaffold N50 of 137.21 Mb. Approximately 97.52% of the genome sequence was anchored to 28 chromosomes. A total of 20,206 protein-coding genes were predicted. We also analyzed the evolutionary relationships, gene family expansions, and positive selection of E. imbricata. Our results revealed that E. imbricata diverged from Chelonia mydas 38 million years ago and had enriched olfactory receptors and aging-related genes. Our genome will be useful for studying E. imbricata and its conservation.

SUBMITTER: Guo Y

PROVIDER: S-EPMC10492850 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature

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The first high-quality chromosome-level genome of Eretmochelys imbricata using HiFi and Hi-C data.

Guo Yusong Y Tang Jiao J Zhuo Zixuan Z Huang Jingru J Fu Zhenli Z Song Jiahao J Liu Min M Dong Zhongdian Z Wang Zhongduo Z

Scientific data 20230909 1

Eretmochelys imbricata, a critically endangered sea turtle inhabiting tropical oceans and protected across the world, had an unknown genome sequence until now. In this study, we used HiFi reads and Hi-C technology to assemble a high-quality, chromosome-level genome of E. imbricata. The genome size was 2,138.26 Mb, with contig N50 length of 123.49 Mb and scaffold N50 of 137.21 Mb. Approximately 97.52% of the genome sequence was anchored to 28 chromosomes. A total of 20,206 protein-coding genes we ...[more]

PMID: 37689728

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