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Chromosome-level genome assembly of Asian yellow pond turtle (Mauremys mutica) with temperature-dependent sex determination system

文献类型: 外文期刊

作者: Liu, Xiaoli 1 ; Wang, Yakun 1 ; Yuan, Ju 1 ; Liu, Fang 1 ; Hong, Xiaoyou 1 ; Yu, Lingyun 1 ; Chen, Chen 1 ; Li, Wei 1 ; Ni, Wei 1 ; Liu, Haiyang 1 ; Zhao, Jian 1 ; Wei, Chengqing 1 ; Chen, Haigang 1 ; Liu, Yihui 1 ; Zhu, Xinping 1 ;

作者机构: 1.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Minist Agr & Rural Affairs, Key Lab Trop & Subtrop Fishery Resource Applicat, Guangzhou 51038, Peoples R China

2.Shanghai Ocean Univ, Coll Life Sci & Fisheries, Shanghai 201306, Peoples R China

期刊名称:SCIENTIFIC REPORTS ( 影响因子:4.996; 五年影响因子:5.516 )

ISSN: 2045-2322

年卷期: 2022 年 12 卷 1 期

页码:

收录情况: SCI

摘要: Knowledge of sex determination has important implications in physiology, ecology and genetics, but the evolutionary mechanisms of sex determination systems in turtles have not been fully elucidated, due to a lack of reference genomes. Here, we generate a high-quality genome assembly of Asian yellow pond turtle (Mauremys mutica) using continuous long-read (PacBio platform), Illumina, and high-throughput chromatin conformation capture (Hi-C) technologies. The M. mutica haplotype has a genome size of 2.23 Gb with a contig N50 of 8.53 Mb and scaffold N50 of 141.98 Mb. 99.98% sequences of the total assembly are anchored to 26 pseudochromosomes. Comparative genomics analysis indicated that the lizard-snake-tuatara clade diverged from the bird-crocodilian-turtle clade at approximately 267.0-312.3 Mya. Intriguingly, positive selected genes are mostly enriched in the calcium signaling pathway and neuroactive ligand-receptor interaction, which are involved in the process of temperature-dependent sex determination. These findings provide important evolutionary insights into temperature-dependent sex determination system.

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