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Stutzerimonas stutzeri culture enhances microbial community structure and tomato seedling growth in saline soil

  • 0School of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China.
Journal of Applied Microbiology +

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February 4, 2025

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February 4, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

Stutzerimonas stutzeri NRCB010 enhances tomato growth and salt tolerance by improving soil conditions. However, its capacity to reduce nitrous oxide (N2O) emissions is limited in saline environments.

Area Of Science

  • Agricultural Microbiology
  • Plant Science
  • Soil Science

Background

  • Plant growth-promoting rhizobacteria (PGPR) are crucial for soil health and crop productivity.
  • The impact of PGPR fermentation on tomato growth and salt tolerance, especially in saline soils, requires further investigation.
  • Understanding PGPR effects on microbial communities and greenhouse gas emissions is vital for sustainable agriculture.

Purpose Of The Study

  • To evaluate the effects of Stutzerimonas stutzeri NRCB010 on tomato growth, salt tolerance, and soil microbial communities in saline conditions.
  • To assess the influence of NRCB010 on nitrous oxide (N2O) emissions from tomato rhizosphere soil.
  • To explore correlations between soil properties, plant biomass, and microbial diversity.

Main Methods

  • Greenhouse pot experiment with varying salinity levels (0 and 3 g kg-1 NaCl).
  • Application of Stutzerimonas stutzeri NRCB010 in different forms (broth, cells, culture).
  • Analysis of soil physicochemical properties, plant growth parameters, microbial community structure, and N2O emissions (nosZⅠ and amoA gene copy numbers).

Main Results

  • Both salt stress and NRCB010 treatments significantly altered soil properties and microbial community structure.
  • Salt stress reduced tomato plant biomass, while NRCB010 application promoted growth and alleviated salinity effects.
  • NRCB010 significantly reduced N2O emissions under non-saline conditions, with effects diminished in saline soil.

Conclusions

  • Stutzerimonas stutzeri NRCB010 demonstrates significant potential for abiotic stress resistance and crop growth promotion in tomato.
  • NRCB010 application improves the rhizosphere microenvironment and soil microbial diversity.
  • The efficacy of NRCB010 in mitigating N2O emissions is dependent on soil salinity levels.

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