Scholarlink

<p><i>Acanthochlamys bracteata</i> P. C. Kao (Velloziaceae) and <i>Pandanus tectorius</i> Parkinson (Pandanaceae) belong to Pandanales. <i>P. tectorius</i> is a coastal plant adapted to saline and intertidal habitats across the Philippines and Pacific islands, while <i>A. bracteata</i> is a critically endangered herb endemic to the Qinghai–Tibet Plateau. In this study, we generated high-quality chromosome-level assemblies for both species. The genomes of <i>P. tectorius</i> (821.80 Mb) and <i>A. bracteata</i> (192.29 Mb) were anchored to 30 and 20 chromosomes, with contig N50 values of 18.31 Mb and 8.00 Mb, and BUSCO completeness of 99.33% and 97.95%, respectively. A total of 28,612 and 23,144 protein-coding genes were annotated, both exceeding 90% BUSCO completeness. Phylogenomic analyses revealed that <i>Acanthochlamys</i> and <i>Pandanus</i> diverged approximately 99.39 million years ago (Mya), and their common ancestor diverged from Dioscoreales around 121.41 Mya. These chromosome-level assemblies provide valuable genomic resources for investigating adaptations to extreme coastal or high-altitude environments, as well as for the conservation genomics of endangered species within Pandanales.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

High-Quality Chromosome-Level Genome Assemblies of two Pandanales species: Pandanus tectorius and Acanthochlamys bracteata

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月22日

查看全文
  • Zhenda Xu,
  • Yuqi Zhang,
  • Yongzhi Yang,
  • Qiao Chen

摘要

Acanthochlamys bracteata P. C. Kao (Velloziaceae) and Pandanus tectorius Parkinson (Pandanaceae) belong to Pandanales. P. tectorius is a coastal plant adapted to saline and intertidal habitats across the Philippines and Pacific islands, while A. bracteata is a critically endangered herb endemic to the Qinghai–Tibet Plateau. In this study, we generated high-quality chromosome-level assemblies for both species. The genomes of P. tectorius (821.80 Mb) and A. bracteata (192.29 Mb) were anchored to 30 and 20 chromosomes, with contig N50 values of 18.31 Mb and 8.00 Mb, and BUSCO completeness of 99.33% and 97.95%, respectively. A total of 28,612 and 23,144 protein-coding genes were annotated, both exceeding 90% BUSCO completeness. Phylogenomic analyses revealed that Acanthochlamys and Pandanus diverged approximately 99.39 million years ago (Mya), and their common ancestor diverged from Dioscoreales around 121.41 Mya. These chromosome-level assemblies provide valuable genomic resources for investigating adaptations to extreme coastal or high-altitude environments, as well as for the conservation genomics of endangered species within Pandanales.