Scholarlink

Aims <p>Root-associated fungal communities (RFCs) play a crucial role in nutrient cycling and soil processes. However, it remains unclear how soil physicochemical properties regulate their functional guilds and composition in Mongolian Scots pine (<i>Pinus sylvestris var. mongolica</i>) plantations across stand development.</p> Methods <p>We employed a space-for-time substitution to examine RFCs and soil physicochemical properties across four developmental stages—Young, Middle-aged, Pre-mature, and Mature in Mongolian Scots pine plantations of northern China.</p> Results <p>Ectomycorrhizal fungi (EcM) relative abundance was highest in the Young stand (6.01%), exceeding that in later stages (1.00–1.56%), suggesting that EcM dominate early forest development by supporting tree growth. Although Shannon indices for EcM and saprophytic fungi (Sap) did not differ significantly among stand ages&#xa0;(<i>p</i> &gt; 0.05), the&#xa0;community composition shifted with stand development. Basidiomycota dominated EcM communities, whereas Sap communities were primarily composed of Ascomycota. In addition, community assembly of both EcM and Sap was primarily governed by ecological drift. Stand age indirectly influences the contents of available phosphorus (AP) and total phosphorus (TP) by affecting soil organic carbon (SOC) and soil water content (SWC), thereby impacting the structure of Sap and EcM communities. Notably, the EcM community structure was strongly associated with AP (<i>p</i> &lt; 0.01), whereas Sap was correlated with TP (<i>p</i> &lt; 0.05).</p> Conclusions <p>This study highlights phosphorus as a critical regulator of RFCs structure during Mongolian Scots pine plantation development, providing a new perspective on the nutrient dynamics of forest ecosystems.</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

Stand development alters root-associated fungal communities through phosphorus regulation and stochastic assembly in mongolian scots pine (Pinus sylvestris var. mongolica) plantations

  • 期刊论文

  • 发表日期：

    2025年12月3日

查看全文
  • Guangling Yu,
  • Anning Wang,
  • Yang Ruan,
  • Yang Xu,
  • Xiaohua Zhang,
  • DingJie Zhao,
  • Hang Xu,
  • Zhiqiang Zhang

摘要

Aims

Root-associated fungal communities (RFCs) play a crucial role in nutrient cycling and soil processes. However, it remains unclear how soil physicochemical properties regulate their functional guilds and composition in Mongolian Scots pine (Pinus sylvestris var. mongolica) plantations across stand development.

Methods

We employed a space-for-time substitution to examine RFCs and soil physicochemical properties across four developmental stages—Young, Middle-aged, Pre-mature, and Mature in Mongolian Scots pine plantations of northern China.

Results

Ectomycorrhizal fungi (EcM) relative abundance was highest in the Young stand (6.01%), exceeding that in later stages (1.00–1.56%), suggesting that EcM dominate early forest development by supporting tree growth. Although Shannon indices for EcM and saprophytic fungi (Sap) did not differ significantly among stand ages (p > 0.05), the community composition shifted with stand development. Basidiomycota dominated EcM communities, whereas Sap communities were primarily composed of Ascomycota. In addition, community assembly of both EcM and Sap was primarily governed by ecological drift. Stand age indirectly influences the contents of available phosphorus (AP) and total phosphorus (TP) by affecting soil organic carbon (SOC) and soil water content (SWC), thereby impacting the structure of Sap and EcM communities. Notably, the EcM community structure was strongly associated with AP (p < 0.01), whereas Sap was correlated with TP (p < 0.05).

Conclusions

This study highlights phosphorus as a critical regulator of RFCs structure during Mongolian Scots pine plantation development, providing a new perspective on the nutrient dynamics of forest ecosystems.