Chen Panpan, Zhong Zhaoyan, Jin Wei-Xin, Sun Jin, Sun Shi-Chun
Fisheries College, Ocean University of China, Qingdao, 266000, China.
MOE Key Laboratory of Evolution & Marine Biodiversity and Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266000, China.
Sci Data. 2025 May 12;12(1):777. doi: 10.1038/s41597-025-05136-z.
Genomic-level studies on the adaptive evolution of animals in the Qinghai-Tibet Plateau have been rapidly increasing. However, most studies are concentrated on vertebrates, and there are few reports on invertebrates. Here, we report the chromosome-level genome assembly for the brine shrimp Artemia tibetiana from Kyêbxang Co, a high-altitude (4620 m above sea level) salt lake on the plateau, based on the combination of Illumina, Nanopore long-reads and Hi-C sequencing data. The assembled genome is 1.69 Gb, and 94.83% of the assembled sequences are anchored to 21 pseudo-chromosomes. Approximately 75% of the genome was identified as repetitive sequences, which is higher than most crustaceans documented so far. A total of 17,988 protein-coding genes were identified, among them 14,388 were functionally annotated. This genomic resource provides the foundation for whole-genome level investigation on the genetic adaptation of Artemia to the harsh conditions in the Qinghai-Tibet Plateau.
关于青藏高原动物适应性进化的基因组水平研究一直在迅速增加。然而，大多数研究集中在脊椎动物上，关于无脊椎动物的报道很少。在此，我们基于Illumina、Nanopore长读长和Hi-C测序数据的组合，报道了来自青藏高原上一个高海拔（海拔4620米）盐湖——杰布桑错的西藏卤虫的染色体水平基因组组装。组装后的基因组大小为1.69Gb，94.83%的组装序列被锚定到21条假染色体上。大约75%的基因组被鉴定为重复序列，这一比例高于目前记录的大多数甲壳类动物。共鉴定出17988个蛋白质编码基因，其中14388个基因得到了功能注释。这一基因组资源为在全基因组水平上研究卤虫对青藏高原恶劣环境的遗传适应性提供了基础。
