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March 24, 2026npj Biofilms and Microbiomes10 citationsOpen Access

PGPR-mediated enhancement of soil nutrients, rhizosphere microbial ecology, and plant growth: a review

MWMengjiao WangZXZhimin Xu

Key Points

  • The aim is to explore how PGPR enhance soil nutrients and plant growth while addressing challenges in their practical use.
  • Reviewing existing literature on PGPR mechanisms in lab and field settings.
  • Analyzing the differences in PGPR effectiveness due to environmental factors.
  • Proposing strategies for better use of PGPR through advanced formulations and synthetic consortia.
  • PGPR show potential to improve soil nutrient levels and plant stress tolerance.
  • Challenges include inconsistent colonization in field conditions affecting their impact on plant growth.
  • Integrated strategies are suggested to enhance the field application of PGPR for agricultural sustainability.

Abstract

Abstract Plant Growth-Promoting Rhizobacteria (PGPR) are key bio-agents for sustainable agriculture. This review conceptualizes PGPR as rhizosphere engineers that enhance soil nutrients, restructure microbial networks, and boost plant stress tolerance. While their mechanisms are well-understood in the lab, a significant translational gap limits field efficacy due to inconsistent colonization and environmental context-dependency. We critically analyze this gap and propose integrated strategies—from advanced formulations to synthetic consortia—to unlock the reliable application of PGPR for global food security.

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Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/69c2298daeb5a845df0d42dfhttps://doi.org/10.1038/s41522-026-00966-0
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