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<p><i>Chaetoceros socialis</i> is a cosmopolitan diatom species that is crucial for maintaining marine ecosystem structure and driving elemental cycles. <i>C. socialis</i> can form harmful algal blooms (HABs) that may cause a negative impact on the marine ecosystems. Whole-genome information for <i>C. socialis</i> is still unavailable, which may hinder more targeted studies on its ecological adaptive responses and evolutionary drivers. To address this gap, we employed cutting-edge genomic technologies including PacBio single-molecule real-time (SMRT) sequencing and high-throughput chromatin conformation capture (Hi-C) to achieve the first chromosome-level genome assembly of <i>C. socialis</i>. The assembled genome is 60.22 Mb in size with a scaffold N50 of 7.81 Mb and has been anchored to eight pseudochromosomes. A total of 13,378 protein-coding genes were predicted, of which 12,069 (90.22%) were functionally annotated. This high-quality genomic resource provides a fundamental data platform for systematically elucidating the ecological adaptation mechanisms of <i>C. socialis</i>.</p>

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Chromosome-level genome assembly of a cosmopolitan marine harmful algal bloom diatom species Chaetoceros socialis (Chaetocerotaceae)

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月3日

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  • Zongmei Cui,
  • Nansheng Chen

摘要

Chaetoceros socialis is a cosmopolitan diatom species that is crucial for maintaining marine ecosystem structure and driving elemental cycles. C. socialis can form harmful algal blooms (HABs) that may cause a negative impact on the marine ecosystems. Whole-genome information for C. socialis is still unavailable, which may hinder more targeted studies on its ecological adaptive responses and evolutionary drivers. To address this gap, we employed cutting-edge genomic technologies including PacBio single-molecule real-time (SMRT) sequencing and high-throughput chromatin conformation capture (Hi-C) to achieve the first chromosome-level genome assembly of C. socialis. The assembled genome is 60.22 Mb in size with a scaffold N50 of 7.81 Mb and has been anchored to eight pseudochromosomes. A total of 13,378 protein-coding genes were predicted, of which 12,069 (90.22%) were functionally annotated. This high-quality genomic resource provides a fundamental data platform for systematically elucidating the ecological adaptation mechanisms of C. socialis.