Scholarlink

<p>The European chestnut, native to Europe and found mainly in Eastern Europe, is highly valued for its unique nutritional characteristics and excellent wood quality, making it an essential economic tree species. In this paper, we report a haplotype-resolved chromosome-level genome of the European chestnut cultivar ‘Marron Nouzillard’ based on PacBio HiFi and Hi-C sequencing technology. The assembly contained two haploid genomes with sizes of 747.45&#xa0;Mb (contig N50 of 22.57&#xa0;Mb) and 731.89&#xa0;Mb (contig N50 of 29.47&#xa0;Mb), which predicted 50,614 and 51,385 protein-coding genes, respectively. Phylogenetic analysis revealed that European chestnut had the same ancestor as Chinese chestnut and Japanese chestnut, and European chestnut diverged from these two species 22.82 million years ago. According to the analysis of gene family expansion and contraction, there were 312 expanded groups and 200 contracted groups in European chestnut. Expansion gene enrichment analysis revealed that European chestnut was mainly associated with regulation of growth and development and detoxification, while Chinese chestnut was mainly associated with resistance to pests and diseases. These valuable genomic data hold great importance for the breeding, reproduction, and disease resistance improvement of European chestnuts.</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

Haplotype-resolved chromosome-level genome assembly of European chestnut (Castanea sativa) and comparative analysis in the genus of Castanea

  • 期刊论文

  • 发表日期：

    2026年2月17日

查看全文
  • Xingyan Li,
  • Ke Lin,
  • Po Hong,
  • Ting Yu,
  • Qian Qiao,
  • Dongzi Zhu,
  • Jiawei Wang,
  • Qingzhong Liu

摘要

The European chestnut, native to Europe and found mainly in Eastern Europe, is highly valued for its unique nutritional characteristics and excellent wood quality, making it an essential economic tree species. In this paper, we report a haplotype-resolved chromosome-level genome of the European chestnut cultivar ‘Marron Nouzillard’ based on PacBio HiFi and Hi-C sequencing technology. The assembly contained two haploid genomes with sizes of 747.45 Mb (contig N50 of 22.57 Mb) and 731.89 Mb (contig N50 of 29.47 Mb), which predicted 50,614 and 51,385 protein-coding genes, respectively. Phylogenetic analysis revealed that European chestnut had the same ancestor as Chinese chestnut and Japanese chestnut, and European chestnut diverged from these two species 22.82 million years ago. According to the analysis of gene family expansion and contraction, there were 312 expanded groups and 200 contracted groups in European chestnut. Expansion gene enrichment analysis revealed that European chestnut was mainly associated with regulation of growth and development and detoxification, while Chinese chestnut was mainly associated with resistance to pests and diseases. These valuable genomic data hold great importance for the breeding, reproduction, and disease resistance improvement of European chestnuts.