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Background and Aims <p>Using native plants and their core microbiome are deemed key measures in nature-based restoration of degraded ecosystems. However, few studies have been done on the microbiome of different ecological niches of <i>Leymus chinensis</i> in native steppe grasslands.</p> Methods <p>We collected samples of <i>L. chinensis</i> in its typical growth areas, and determined microbiome in the rhizosphere soils, roots and shoots endosphere.</p> Results <p>The assembly of <i>L. chinensis</i> microbiome is dominated by stochastic processes and the influence of deterministic processes increases in endophyte. Microbial diversity, composition, and interaction patterns of three niches had significant ecological niche zoning. The roots microbiome exhibiting highest stability, rhizosphere microbiome has diversity advantage, and shoots microbiome has positive collaboration advantage. The alpha, beta diversity and network nodes of rhizosphere microbiome, and the network nodes and positive cohesion of roots and shoots microbiome have a significant effect on the biomass of <i>L. chinensis</i>. The microbiome of three ecological niches all have advantageous functions of chemoheterotrophy, and the roots endosphere and rhizosphere microbiome have advantages in function pathway nitrogen_fixation, ureolysis and nitrate_reduction, respectively. The core microbiome can exert the advantage functions of each niche, and the overall plant core microbiome has significantly positive impact on the biomass.</p> Conclusion <p>Therefore, the construction of synthetic microbial communities should comprehensively consider the core microbiomes of different ecological niches, as their synergistic effects are more beneficial for the adaptation of <i>L. chinensis</i> to different environments, promoting its growth and the restoration of degraded <i>L. chinensis</i> grasslands.</p> Graphical Abstract <p></p>

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Core microbiome and microbial community characteristics of three ecological niches contribute to the growth of Leymus chinensis

  • 期刊论文

  • 发表日期：

    2025年6月9日

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  • Peiran Guo,
  • Bingbing Jia,
  • Jiaying Lin,
  • Chengyan Lu,
  • Tai Liu,
  • Baihui Hao,
  • Yiwen Xv,
  • Qian Wang,
  • Yvnong Chen,
  • Wei Guo,
  • Frank Yonghong Li

摘要

Background and Aims

Using native plants and their core microbiome are deemed key measures in nature-based restoration of degraded ecosystems. However, few studies have been done on the microbiome of different ecological niches of Leymus chinensis in native steppe grasslands.

Methods

We collected samples of L. chinensis in its typical growth areas, and determined microbiome in the rhizosphere soils, roots and shoots endosphere.

Results

The assembly of L. chinensis microbiome is dominated by stochastic processes and the influence of deterministic processes increases in endophyte. Microbial diversity, composition, and interaction patterns of three niches had significant ecological niche zoning. The roots microbiome exhibiting highest stability, rhizosphere microbiome has diversity advantage, and shoots microbiome has positive collaboration advantage. The alpha, beta diversity and network nodes of rhizosphere microbiome, and the network nodes and positive cohesion of roots and shoots microbiome have a significant effect on the biomass of L. chinensis. The microbiome of three ecological niches all have advantageous functions of chemoheterotrophy, and the roots endosphere and rhizosphere microbiome have advantages in function pathway nitrogen_fixation, ureolysis and nitrate_reduction, respectively. The core microbiome can exert the advantage functions of each niche, and the overall plant core microbiome has significantly positive impact on the biomass.

Conclusion

Therefore, the construction of synthetic microbial communities should comprehensively consider the core microbiomes of different ecological niches, as their synergistic effects are more beneficial for the adaptation of L. chinensis to different environments, promoting its growth and the restoration of degraded L. chinensis grasslands.

Graphical Abstract