Scholarlink

Background and aims <p>Plant intraspecific trait variation (ITV) is critical for community assembly and functioning. However, its effect on rhizosphere microbes and the nematode micro-food web has rarely been explored.</p> Methods <p>To investigate how ITV affects rhizosphere bacteria, fungi, and nematode communities, we selected twelve tree species representing arbuscular mycorrhizal (AM) and ectomycorrhizal (ECM) types in a tropical common garden and assessed their root traits in root economics space (RES) and root exudate, rhizosphere soil properties, and rhizosphere soil biota communities.</p> Results <p>Root ITV significantly altered the between-species trait variation in RES, which captures trade-offs in ‘collaboration’ and ‘conservation’ gradients that ranging from ‘DIY’ (do-it-yourself) to ‘outsourcing’ and ‘fast’ to ‘slow’ strategies. The soil properties were also captured by ‘nutrient’ and ‘pH’ gradients. Collectively, ECM trees exhibiting ‘DIY’ and ‘fast’ root strategies, as well as inhabiting soils with higher nutrient levels, were associated with increased rhizosphere fungal and nematode diversity. And AM trees inhabiting soils with elevated pH were associated with increased bacterial diversity. Both ECM and AM trees with a ‘fast’ root strategy enhanced cross-guild co-occurrence network complexity, and with higher nutrient levels and pH values increased within-guild network complexity. Notably, the intraspecific variations in root traits and soil properties exerted more shifts in rhizosphere soil biota diversity and network complexity in ECM trees relative to AM trees.</p> Conclusion <p>This study demonstrates the role of plant ITV in structuring rhizosphere soil biota and highlights the importance of plant phenotypic diversity for soil community assembly and functioning.</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

Intraspecific root traits variations affect rhizosphere soil biota diversity and network complexity in a tropical common garden

  • 期刊论文

  • 发表日期：

    2026年7月2日

查看全文
  • Mingke Fang,
  • Hao Zhang,
  • Xinyao Yang,
  • Shangwen Xia,
  • Xiaodong Yang

摘要

Background and aims

Plant intraspecific trait variation (ITV) is critical for community assembly and functioning. However, its effect on rhizosphere microbes and the nematode micro-food web has rarely been explored.

Methods

To investigate how ITV affects rhizosphere bacteria, fungi, and nematode communities, we selected twelve tree species representing arbuscular mycorrhizal (AM) and ectomycorrhizal (ECM) types in a tropical common garden and assessed their root traits in root economics space (RES) and root exudate, rhizosphere soil properties, and rhizosphere soil biota communities.

Results

Root ITV significantly altered the between-species trait variation in RES, which captures trade-offs in ‘collaboration’ and ‘conservation’ gradients that ranging from ‘DIY’ (do-it-yourself) to ‘outsourcing’ and ‘fast’ to ‘slow’ strategies. The soil properties were also captured by ‘nutrient’ and ‘pH’ gradients. Collectively, ECM trees exhibiting ‘DIY’ and ‘fast’ root strategies, as well as inhabiting soils with higher nutrient levels, were associated with increased rhizosphere fungal and nematode diversity. And AM trees inhabiting soils with elevated pH were associated with increased bacterial diversity. Both ECM and AM trees with a ‘fast’ root strategy enhanced cross-guild co-occurrence network complexity, and with higher nutrient levels and pH values increased within-guild network complexity. Notably, the intraspecific variations in root traits and soil properties exerted more shifts in rhizosphere soil biota diversity and network complexity in ECM trees relative to AM trees.

Conclusion

This study demonstrates the role of plant ITV in structuring rhizosphere soil biota and highlights the importance of plant phenotypic diversity for soil community assembly and functioning.