Scholarlink

<p><i>Ips</i> (Curculionidae: Scolytinae) bark beetles (BBs) are ecologically and economically devastating coniferous pests in the Northern Hemisphere. Although the microbial diversity associated with these beetles has been well studied, mechanisms of community assembly and the functional roles of key microbes remain poorly understood. This study investigates the microbial community structures and functions in both intestinal and non-intestinal environments of five <i>Ips</i> BBs using a metagenomic approach. The findings reveal similar microbial community compositions, though the α-diversity of dominant taxa differs between intestinal and non-intestinal environments due to the variability in bark beetle species, host trees, and habitats. Intestinal microbial communities are predominantly shaped homogenizing dispersal (HD) and undominated processes (UP), whereas non-intestinal microbial communities are primarily driven by heterogeneous selection (HS). Functional analysis shows that genes and enzymes associated with steroid biosynthesis and oxidative phosphorylation are primarily found in non-intestinal fungal symbionts <i>Ogataea</i>, <i>Wickerhamomyce</i>, <i>Ophiostoma</i>, and <i>Ceratocystis</i> of <i>Ips</i> species. Genes and enzymes involved in degrading terpenoids, phenolic compounds, and polysaccharides are predominately found in the intestinal <i>Acinetobacter</i>, <i>Erwinia</i>, and <i>Serratia</i>. This study provides valuable and in-depth insights into the symbiotic relationships between <i>Ips</i> BBs and their microbial partners, enhancing our understanding of insect-microbe coevolution and suggesting new strategies for pest management.</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

Distinct assembly processes of intestinal and non-intestinal microbes of bark beetles from clues of metagenomic insights

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年3月6日

查看全文
  • Caixia Liu,
  • Huimin Wang,
  • Zheng Wang,
  • Lingyu Liang,
  • Yaning Li,
  • Duanchong Liu,
  • Quan Lu

摘要

Ips (Curculionidae: Scolytinae) bark beetles (BBs) are ecologically and economically devastating coniferous pests in the Northern Hemisphere. Although the microbial diversity associated with these beetles has been well studied, mechanisms of community assembly and the functional roles of key microbes remain poorly understood. This study investigates the microbial community structures and functions in both intestinal and non-intestinal environments of five Ips BBs using a metagenomic approach. The findings reveal similar microbial community compositions, though the α-diversity of dominant taxa differs between intestinal and non-intestinal environments due to the variability in bark beetle species, host trees, and habitats. Intestinal microbial communities are predominantly shaped homogenizing dispersal (HD) and undominated processes (UP), whereas non-intestinal microbial communities are primarily driven by heterogeneous selection (HS). Functional analysis shows that genes and enzymes associated with steroid biosynthesis and oxidative phosphorylation are primarily found in non-intestinal fungal symbionts Ogataea, Wickerhamomyce, Ophiostoma, and Ceratocystis of Ips species. Genes and enzymes involved in degrading terpenoids, phenolic compounds, and polysaccharides are predominately found in the intestinal Acinetobacter, Erwinia, and Serratia. This study provides valuable and in-depth insights into the symbiotic relationships between Ips BBs and their microbial partners, enhancing our understanding of insect-microbe coevolution and suggesting new strategies for pest management.