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<p><i>Gibbosula rochechouartii</i> is a vulnerable freshwater mussel species endemic to China, with severely degraded habitats. To date, there is no high-quality genome available for this species. In this study, we integrated PacBio HiFi, Oxford Nanopore Technologies (ONT), and Hi-C approaches to generate the first telomere-to-telomere genome assembly for this species. The completed genome spans 2.99 Gb with 93.41% completeness, anchored to 19 chromosomes. Comparative genomic analyses indicate that among all currently published unionoidea genomes, <i>Margaritifera margaritifera</i> is the closest relative to <i>G. rochechouartii</i>. This high-quality reference genome is expected to significantly advance conservation research efforts for this species.</p>

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The first telomere-to-telomere genome assembly of a freshwater bivalve: Gibbosula rochechouartii

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月15日

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  • Ming Yan,
  • Min Jiang,
  • Mingfei Zhan,
  • Chao Jiang,
  • Haibo Wen,
  • Fengyue Shu,
  • Kai Liu

摘要

Gibbosula rochechouartii is a vulnerable freshwater mussel species endemic to China, with severely degraded habitats. To date, there is no high-quality genome available for this species. In this study, we integrated PacBio HiFi, Oxford Nanopore Technologies (ONT), and Hi-C approaches to generate the first telomere-to-telomere genome assembly for this species. The completed genome spans 2.99 Gb with 93.41% completeness, anchored to 19 chromosomes. Comparative genomic analyses indicate that among all currently published unionoidea genomes, Margaritifera margaritifera is the closest relative to G. rochechouartii. This high-quality reference genome is expected to significantly advance conservation research efforts for this species.