Chromosome-Level Genome Assembly of Protosalanx chinensis and Response to Air Exposure Stress
1
College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
2
Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
3
Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
*
Author to whom correspondence should be addressed.
Biology 2023, 12(9), 1266; https://doi.org/10.3390/biology12091266
Submission received: 2 June 2023
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Revised: 5 September 2023
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Accepted: 11 September 2023
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Published: 21 September 2023
(This article belongs to the Section Genetics and Genomics)
Simple Summary
In the present study, we assembled a high-quality chromosome-level genome of Protosalanx chinensis, which is the first chromosome-level genome for Salangidae. These genomic data provide a fundamental resource for ecological and adaptation studies of Protosalanx chinensis, and offer a deeper understanding of the response to air exposure stress and species conservation.
Abstract
Protosalanx chinensis is a suitable particular species for genetic studies on nearly scaleless skin, transparency and high sensitivity to hypoxia stress. Here, we generated a high-quality chromosome-level de novo assembly of P. chinensis. The final de novo assembly yielded 379.47 Mb with 28 pseudo-chromosomes and a scaffold N50 length of 14.52 Mb. In total, 21,074 protein-coding genes were predicted. P. chinensis, Esox lucius and Hypomesus transpacificus had formed a clade, which diverged about 115.5 million years ago. In the air exposure stress experiment, we found that some genes play an essential role during P. chinensis hypoxia, such as bhlh, Cry1, Clock, Arntl and Rorb in the circadian rhythm pathway. These genomic data offer a crucial foundation for P. chinensis ecology and adaptation studies, as well as a deeper understanding of the response to air exposure stress.
