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<p><UnorderedList Mark="Bullet"> <ItemContent> <p>Earthworm gut persistently changed soil bacteria structure.</p> </ItemContent> <ItemContent> <p>Soil abundant taxa primarily drive soil multifunctionality.</p> </ItemContent> <ItemContent> <p>Earthworm increased the r-strategy prevalence of soil bacterial community.</p> </ItemContent> <ItemContent> <p>Earthworms altered soil r/K strategy, not diversity, to drive soil multifunctionality.</p> </ItemContent> </UnorderedList></p><p>Earthworm gut microbiome can significantly influence soil microbial community and functions. However, how earthworms affect the abundant, intermediate, and rare soil bacterial taxa and subsequently regulate soil multifunctionality remains poorly understood. In this study, we investigated bacteria composition and functional gene traits with and without earthworm addition in low-nutrient soil. Our results show that earthworm addition enhanced soil multifunctionality, including organic carbon, nitrogen, and phosphorus mineralization. Compared to other groups, abundant taxa in earthworm-treated soil exhibited higher 16S rRNA operon copy numbers, copiotroph/oligotroph ratios, niche width, and network efficiency, suggesting a greater competitive capacity for resource acquisition. We identified a core set of persistent abundant taxa genera (11 genera) in earthworm-treated soil, which persisted throughout the incubation period, and were notably dominant among abundant taxa in the earthworm gut (67.1%-79.2%). Furthermore, structural equation modeling revealed that gut-associated abundant taxa strongly influenced the composition of soil abundant taxa and persistent core abundant taxa genera, which in turn increased soil r-strategists and enhanced multifunctionality. Overall, our findings provide new insights into the ecological strategies of different soil taxa in response to earthworm addition and highlight the role of earthworm gut microbiome in adapting to nutrient-poor environments.</p>

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Anecic earthworm enhanced the soil multifunctionality by affecting soil bacterial abundant taxa

  • 期刊论文

  • 发表日期：

    2025年7月19日

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  • Yan Hu,
  • Bing-Jie Jin,
  • Xin-Yuan Li,
  • Qing-Lin Chen,
  • Cheng-Liang Sun,
  • Gang Li,
  • Xian-Yong Lin

摘要

Earthworm gut persistently changed soil bacteria structure.

Soil abundant taxa primarily drive soil multifunctionality.

Earthworm increased the r-strategy prevalence of soil bacterial community.

Earthworms altered soil r/K strategy, not diversity, to drive soil multifunctionality.

Earthworm gut microbiome can significantly influence soil microbial community and functions. However, how earthworms affect the abundant, intermediate, and rare soil bacterial taxa and subsequently regulate soil multifunctionality remains poorly understood. In this study, we investigated bacteria composition and functional gene traits with and without earthworm addition in low-nutrient soil. Our results show that earthworm addition enhanced soil multifunctionality, including organic carbon, nitrogen, and phosphorus mineralization. Compared to other groups, abundant taxa in earthworm-treated soil exhibited higher 16S rRNA operon copy numbers, copiotroph/oligotroph ratios, niche width, and network efficiency, suggesting a greater competitive capacity for resource acquisition. We identified a core set of persistent abundant taxa genera (11 genera) in earthworm-treated soil, which persisted throughout the incubation period, and were notably dominant among abundant taxa in the earthworm gut (67.1%-79.2%). Furthermore, structural equation modeling revealed that gut-associated abundant taxa strongly influenced the composition of soil abundant taxa and persistent core abundant taxa genera, which in turn increased soil r-strategists and enhanced multifunctionality. Overall, our findings provide new insights into the ecological strategies of different soil taxa in response to earthworm addition and highlight the role of earthworm gut microbiome in adapting to nutrient-poor environments.