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<p><i>Cyperus rotundus</i>, one of the most aggressive weeds worldwide, demonstrates significant resistance to conventional control strategies. This species causes yield losses ranging from 20% to 90% in both agricultural and horticultural crops, posing a substantial threat to agricultural ecosystems. In this study, we present a chromosome-level genome assembly and annotation of <i>C. rotundus</i>. The haplotypic assembly spans approximately 293 Mb in length, with a high contig N50 of 5.49 Mb, a GC content of 36%, and a BUSCO score of 93.4%. A total of 94.03% (275.55 Mb) of the contigs were successfully mapped onto 54 chromosomes. Repetitive sequences constitute 44.78% of the genome. We predicted 23,280 protein-coding genes, 97% (52,439) of which were functionally annotated. The reference genome will serve as a valuable resource for phylogenomic studies within the <i>Cyperaceae</i> family and support further research on <i>C. rotundus</i>.</p>

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Chromosome-Level Genome Assembly and Annotation of purple nutsedge (Cyperus rotundus Cyperaceae)

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月19日

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  • Wenlong Wen,
  • Yijie Zhang,
  • Yating Feng,
  • Rou Xu,
  • Tianyu Li,
  • Ziwei Yu,
  • Honggang Wang,
  • Fei Chen,
  • Yinhua Chen

摘要

Cyperus rotundus, one of the most aggressive weeds worldwide, demonstrates significant resistance to conventional control strategies. This species causes yield losses ranging from 20% to 90% in both agricultural and horticultural crops, posing a substantial threat to agricultural ecosystems. In this study, we present a chromosome-level genome assembly and annotation of C. rotundus. The haplotypic assembly spans approximately 293 Mb in length, with a high contig N50 of 5.49 Mb, a GC content of 36%, and a BUSCO score of 93.4%. A total of 94.03% (275.55 Mb) of the contigs were successfully mapped onto 54 chromosomes. Repetitive sequences constitute 44.78% of the genome. We predicted 23,280 protein-coding genes, 97% (52,439) of which were functionally annotated. The reference genome will serve as a valuable resource for phylogenomic studies within the Cyperaceae family and support further research on C. rotundus.