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<p><i>Camellia oleifera</i>, belonging to the genus <i>Camellia</i>, is an important woody edible oil plant with high ecological and economic values. In this study, we assembled a chromosome-level genome of <i>Camellia brevistyla</i> that represents the closest diploid relative of polyploid <i>C. oleifera</i> based on current research. The genome size of the assembly was 3.10 Gb with a contig N50 size of 88.60 Mb. The BUSCO completeness score was estimated to be 98.88%, indicating high assembly completeness. A total of 2.29 Gb of the sequences were annotated as repetitive elements, accounting for 73.67% of the entire genome assembly. A total of 35,093 protein-coding genes were predicted, with the annotation completeness evaluated to be 97.03% via BUSCO analysis. In conclusion, the high-quality <i>C. brevistyla</i> genome is a pivotal genetic resource within the genus <i>Camellia</i>, which can serve as a vital diploid comparator for evolutionary and genomic studies in the more complex polyploid <i>C. oleifera</i>.</p>

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Chromosome-level genome assembly of oil-tea tree Camellia brevistyla

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月25日

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  • Hai Lin,
  • Deyi Yuan,
  • Shixin Xiao,
  • Wenfang Gong,
  • Lin Zhang

摘要

Camellia oleifera, belonging to the genus Camellia, is an important woody edible oil plant with high ecological and economic values. In this study, we assembled a chromosome-level genome of Camellia brevistyla that represents the closest diploid relative of polyploid C. oleifera based on current research. The genome size of the assembly was 3.10 Gb with a contig N50 size of 88.60 Mb. The BUSCO completeness score was estimated to be 98.88%, indicating high assembly completeness. A total of 2.29 Gb of the sequences were annotated as repetitive elements, accounting for 73.67% of the entire genome assembly. A total of 35,093 protein-coding genes were predicted, with the annotation completeness evaluated to be 97.03% via BUSCO analysis. In conclusion, the high-quality C. brevistyla genome is a pivotal genetic resource within the genus Camellia, which can serve as a vital diploid comparator for evolutionary and genomic studies in the more complex polyploid C. oleifera.