A telomere-to-telomere chromosome-scale genome assembly of glass catfish (Kryptopterus vitreolus)

文献类型： 外文期刊

第一作者： Bian, Chao

作者： Bian, Chao;Li, Dahong;Wang, Yiluan;He, Zhe;Shi, Qiong;Chen, Wei-Ting;Chong, Cheong-Meng;Zhou, Hongling;Shi, Qiong

作者机构：

期刊名称：SCIENTIFIC DATA （ 影响因子：6.9； 五年影响因子：8.7 ）

ISSN：

年卷期： 2025 年 12 卷 1 期

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收录情况： SCI

摘要： Glass catfish (Kryptopterus vitreolus) is commonly distributed in several Asian countries, such as Thailand, Malaysia, and Indonesia. It is renowned for its near-transparent appearance, which has drawn considerable attention for biomedical research and the tropical ornamental fish industry. Here, we successfully constructed the first telomere-to-telomere (T2T) chromosome-scale genome assembly for glass catfish, by integration of PacBio HiFi, Nanopore ONT ultra-long, and Hi-C sequencing technologies. The haplotypic assembly covers approximately 687.7 Mb in length, featuring a high contig N50 of 21.3 Mb. This assembly was then anchored into 32 chromosomes, presenting a complete set of 64 telomeres and 32 centromeres. It was predicted with 252.4 Mb of repetitive sequences and annotated with a total of 24,696 protein-coding genes. Subsequent BUSCO analysis revealed high genome completeness (up to 96.4%). This high-quality T2T genome assembly not only provides a valuable genetic resource for investigating the molecular mechanisms underlying transparency, but also supports in-depth studies on functional genomics, genetic diversity, and selective breeding for this economically important fish species.

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