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Background and aims <p>Rhizosphere microbiome transplantation, as a sustainable bioremediation strategy, has potential application prospects for restoring salinized ecosystems. This study aimed to evaluate whether transplanting rhizosphere microbiome of halophytes can promote the growth of <i>L. chinensis</i> in salinized soil, and to understand underlying mechanisms by examining the changes in microbial communities in different ecological niches.</p> Methods <p>Prepared inoculants using rhizosphere soil of halophytes were inoculated into salinized soil. Half of the salinized soil was planted with <i>L. chinensis</i>, and another half was not. The treatments with best growth promoting effect were selected to conduct in-depth measurements on rhizosphere soil, root and shoot samples of the plant, and on soil without plant.</p> Results <p>Microbiome transplantation significantly increased biomass, nutrient uptake, photosynthetic efficiency, and alleviated oxidative and osmotic damage of <i>L. chinensis</i>. Microbiome transplantation significantly altered soil EC, nutrients content and soil enzyme activities regardless if soil was planted. Stochastic processes dominated microbial community assembly, but the proportion of deterministic processes increased with microbiome transplantation, in all ecological niches. Microbiome transplantation enriched beneficial biomarkers, enhanced stability of microbial networks in various ecological niches. The stability of microbial communities had stronger effects on plant biomass than diversity, and bacterial community in root had stronger effects than in rhizosphere or shoot.</p> Conclusion <p>Transplantation of halophyte rhizosphere microbiome reshapes the entire microbial communities and enhances salt tolerance of <i>L. chinensis</i>. Our study emphasizes the importance of improving microbial communities and their stability in various plant ecological niches for enhancing microbial remediation efficiency.</p>

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Restoration of saline-alkaline grasslands: microbiome transplantation promotes Leymus chinensis growth by reshaping multi-niche bacterial communities

  • 期刊论文

  • 发表日期：

    2026年1月22日

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  • Peiran Guo,
  • Jiaying Lin,
  • Bingbing Jia,
  • Wei Guo,
  • Frank Yonghong Li

摘要

Background and aims

Rhizosphere microbiome transplantation, as a sustainable bioremediation strategy, has potential application prospects for restoring salinized ecosystems. This study aimed to evaluate whether transplanting rhizosphere microbiome of halophytes can promote the growth of L. chinensis in salinized soil, and to understand underlying mechanisms by examining the changes in microbial communities in different ecological niches.

Methods

Prepared inoculants using rhizosphere soil of halophytes were inoculated into salinized soil. Half of the salinized soil was planted with L. chinensis, and another half was not. The treatments with best growth promoting effect were selected to conduct in-depth measurements on rhizosphere soil, root and shoot samples of the plant, and on soil without plant.

Results

Microbiome transplantation significantly increased biomass, nutrient uptake, photosynthetic efficiency, and alleviated oxidative and osmotic damage of L. chinensis. Microbiome transplantation significantly altered soil EC, nutrients content and soil enzyme activities regardless if soil was planted. Stochastic processes dominated microbial community assembly, but the proportion of deterministic processes increased with microbiome transplantation, in all ecological niches. Microbiome transplantation enriched beneficial biomarkers, enhanced stability of microbial networks in various ecological niches. The stability of microbial communities had stronger effects on plant biomass than diversity, and bacterial community in root had stronger effects than in rhizosphere or shoot.

Conclusion

Transplantation of halophyte rhizosphere microbiome reshapes the entire microbial communities and enhances salt tolerance of L. chinensis. Our study emphasizes the importance of improving microbial communities and their stability in various plant ecological niches for enhancing microbial remediation efficiency.