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Telomere-to-telomere genome assemblies of three silkworm strains with long-term pupal characteristics

文献类型： 外文期刊

作者： Wan, Linrong 1 ; Deng, Cao 3 ; Liu, Binbin 1 ; Su, Siyuan 1 ; Zhang, Zhiyong 1 ; Jiang, Yaming 1 ; Zou, Bangxing 1 ; Liu, Junfeng 1 ; Du, Zhouhe 1 ; Zhang, Youhong 1 ; Chen, Peng 2 ; Xiao, Wenfu 1 ;

作者机构： 1.Sichuan Acad Agr Sci SAAS, Sericultural Res Inst, Nanchong, Sichuan, Peoples R China

2.Southwest Univ SWU, State Key Lab Resource Insects, Chongqing, Peoples R China

3.LyuKang, Res & Dev Ctr, Chengdu, Peoples R China

4.DNA Stories Bioinformat Ctr, Dept Bioinformat, Chengdu, Peoples R China

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

页码：

收录情况： SCI

摘要： The domesticated silkworm (Bombyx mori) is both economically significant and a valuable model organism. However, challenges persist in silk production, particularly in preserving silkworm cocoons. The wild silkworm (Bombyx mandarina), a close relative, with long-term pupal characteristics, could address storage and industrial silk production issues. We conducted interspecies hybridization between domestic and wild silkworms, successfully introducing the long-pupal period trait into the domestic silkworm through genomic integration. Here, we presented the telomere-to-telomere genome assemblies of three silkworm strains (KA, L, and M) with long-term pupal characteristics. The genome assembly sizes ranged from 453.82 Mb to 461.92 Mb, with high contig N50 values and completeness. We predicted over 14,000 protein-coding genes and identified strain-specific fragments. This research enriches the domestic silkworm pan-genome project and provides a foundation for further genetic studies. By introducing the trait, we have for the first time reported a phenomenon of genomic introgression between domestic and wild silkworm, and have also opened up a new avenue for silkworm breeding.

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