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<p>The casuarina moth, <i>Lymantria xylina</i>, is a serious pest threatening subtropical regions through severe defoliation and strong invasive potential. Despite its economic impact and high invasion risk, a high-quality reference genome remains lacking. To bridge this knowledge gap, we generated a chromosome-level genome assembly for <i>L. xylina</i> combining Illumina short-reads, Oxford Nanopore long-reads, and high-throughput chromatin conformation capture (Hi-C) scaffolding data. Following long-reads based assembly and Hi-C scaffolding, the final genome assembly totals 977.74 Mb, with 930.50 Mb (95.17%) of sequences anchored onto 31 pseudo-chromosomes, achieving a scaffold N50 of 34.15 Mb. The genome assembly, featuring fully assembled telomeres on all 31 pseudo-chromosomes, demonstrates 94.5% Benchmarking Universal Single-Copy Orthologs (BUSCO) completeness and high accuracy with consensus quality value of 31.72. Repetitive elements constitute 77.18% of the genome, and 18,484 protein-coding genes were predicted, with 95.21% functionally annotated. This high-quality genome assembly provides a critical foundation for elucidating interaction mechanisms with host plants and natural enemies (nucleopolyhedrovirus, <i>Beauveria bassiana</i>), for developing enhanced pest management and control strategies.</p>

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Chromosome-level genome assembly of the casuarina moth, Lymantria xylina Swinhoe (1903)

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月4日

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  • Siyi Liu,
  • Hui Jiang,
  • Tao Ni,
  • Kai Wang,
  • Xia Hu,
  • Songqing Wu,
  • Feiping Zhang,
  • Rong Wang

摘要

The casuarina moth, Lymantria xylina, is a serious pest threatening subtropical regions through severe defoliation and strong invasive potential. Despite its economic impact and high invasion risk, a high-quality reference genome remains lacking. To bridge this knowledge gap, we generated a chromosome-level genome assembly for L. xylina combining Illumina short-reads, Oxford Nanopore long-reads, and high-throughput chromatin conformation capture (Hi-C) scaffolding data. Following long-reads based assembly and Hi-C scaffolding, the final genome assembly totals 977.74 Mb, with 930.50 Mb (95.17%) of sequences anchored onto 31 pseudo-chromosomes, achieving a scaffold N50 of 34.15 Mb. The genome assembly, featuring fully assembled telomeres on all 31 pseudo-chromosomes, demonstrates 94.5% Benchmarking Universal Single-Copy Orthologs (BUSCO) completeness and high accuracy with consensus quality value of 31.72. Repetitive elements constitute 77.18% of the genome, and 18,484 protein-coding genes were predicted, with 95.21% functionally annotated. This high-quality genome assembly provides a critical foundation for elucidating interaction mechanisms with host plants and natural enemies (nucleopolyhedrovirus, Beauveria bassiana), for developing enhanced pest management and control strategies.