Scholarlink

Background and aims <p>Plant invasion diversely influences soil resource availability and microbial community. The changes in resources often mismatch microbial stoichiometric demands, inducing microbial nutrient limitation. However, it remains elusive whether invasion alters such stoichiometric imbalances, and how microbial responses to invasion modulate these imbalances.</p> Methods <p>We collected soils and plants from native plant <i>Artemisia lavandulifolia</i> and three invasive species (<i>Alternanthera philoxeroides</i>, <i>Erigeron canadensis</i>, and <i>Solidago canadensis</i>) in subtropical ecosystems. We measured concentrations and stoichiometry of carbon (C), nitrogen (N), and phosphorus (P), and soil bacterial community.</p> Results <p>Plant invasion reduced C:N imbalance between microbes and their resources. This reduction was linked to a microbial community shift toward <i>K</i>-strategists and N-cycling taxa, which could enhance soil N availability and alleviate microbial N limitation. In contrast, invasive plants increased C:P imbalance, associated with reduced P availability and heightened microbial P immobilization. The concurrent decline of key P-solubilizing bacteria likely further suppressed P release, intensifying microbial P limitation.</p> Conclusion <p>Plant invasion may drive functional and adaptive shifts in soil microbial communities, which potentially mediate stoichiometric imbalances with contrasting consequences for soil N and P cycling. Such microbial feedback could reshape plant–soil interactions and ultimately influence invader performance.</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

Soil bacterial adaptation to plant invasion alters stoichiometric imbalances between soil microbes and resources in subtropical ecosystems

  • 期刊论文

  • 发表日期：

    2026年2月28日

查看全文
  • Meng Na,
  • Shangqi Xu,
  • Yong He,
  • Tianyi Lu,
  • Xiaoping Li,
  • Jihai Zhou

摘要

Background and aims

Plant invasion diversely influences soil resource availability and microbial community. The changes in resources often mismatch microbial stoichiometric demands, inducing microbial nutrient limitation. However, it remains elusive whether invasion alters such stoichiometric imbalances, and how microbial responses to invasion modulate these imbalances.

Methods

We collected soils and plants from native plant Artemisia lavandulifolia and three invasive species (Alternanthera philoxeroides, Erigeron canadensis, and Solidago canadensis) in subtropical ecosystems. We measured concentrations and stoichiometry of carbon (C), nitrogen (N), and phosphorus (P), and soil bacterial community.

Results

Plant invasion reduced C:N imbalance between microbes and their resources. This reduction was linked to a microbial community shift toward K-strategists and N-cycling taxa, which could enhance soil N availability and alleviate microbial N limitation. In contrast, invasive plants increased C:P imbalance, associated with reduced P availability and heightened microbial P immobilization. The concurrent decline of key P-solubilizing bacteria likely further suppressed P release, intensifying microbial P limitation.

Conclusion

Plant invasion may drive functional and adaptive shifts in soil microbial communities, which potentially mediate stoichiometric imbalances with contrasting consequences for soil N and P cycling. Such microbial feedback could reshape plant–soil interactions and ultimately influence invader performance.