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<p>Abiotic stress severely constrains plant growth and productivity, representing a critical barrier to global food security. Although plants possess inherent defense mechanisms, these are often inadequate under prolonged or severe stress. Recent advances in research highlight seed bio-priming as a promising and eco-friendly approach to enhance stress resilience. Bio-priming involves pre-sowing inoculation of seeds with beneficial microbes, particularly plant growth-promoting rhizobacteria (PGPR), which establish early interactions with the host to reprogram defense responses. Rhizobacteria-mediated seed bio-priming enhances germination, seedling vigor, and nutrient acquisition by modulating key physio-biochemical pathways. Unlike previous reviews emphasizing foliar or root-based microbial applications, this review focuses on rhizobacteria-mediated seed bio-priming as a distinct intervention operating during pre-germinative and early germination stages. Besides, the mechanistic continuity between early bio-priming-induced morpho-physiological responses and their translation into stable, long-term molecular reprogramming under abiotic stress remains insufficiently understood. Addressing this gap, this review critically examines the impact of PGPR-mediated seed bio-priming on plant morpho-physiology and provides in-depth insights into molecular reprogramming, including phytohormonal regulation, antioxidant defense, osmolyte accumulation, and the activation of stress-responsive genes. By integrating these perspectives, this review underscores seed bio-priming as a novel, seed-centric, and sustainable strategy to mitigate multiple abiotic stresses. Finally, we identify existing research gaps and outline future directions to advance the practical deployment of rhizobacterial bio-priming for climate-resilient and sustainable agriculture.</p>

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Seed Bio-priming with Rhizobacteria: An Integrative Strategy for Plant Resilience under Abiotic Stress

  • 期刊论文

  • 发表日期：

    2026年5月26日

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  • Mohammad Golam Kibria,
  • Tamanna Akter Mukta,
  • Nusrat Jahan Mim,
  • Farjana Jannat Shimo,
  • Hamideh Ghaffari,
  • Sajad Hussain,
  • Md. Anwarul Abedin,
  • Avishek Datta,
  • Marian Brestic,
  • Mohammad Saidur Rhaman

摘要

Abiotic stress severely constrains plant growth and productivity, representing a critical barrier to global food security. Although plants possess inherent defense mechanisms, these are often inadequate under prolonged or severe stress. Recent advances in research highlight seed bio-priming as a promising and eco-friendly approach to enhance stress resilience. Bio-priming involves pre-sowing inoculation of seeds with beneficial microbes, particularly plant growth-promoting rhizobacteria (PGPR), which establish early interactions with the host to reprogram defense responses. Rhizobacteria-mediated seed bio-priming enhances germination, seedling vigor, and nutrient acquisition by modulating key physio-biochemical pathways. Unlike previous reviews emphasizing foliar or root-based microbial applications, this review focuses on rhizobacteria-mediated seed bio-priming as a distinct intervention operating during pre-germinative and early germination stages. Besides, the mechanistic continuity between early bio-priming-induced morpho-physiological responses and their translation into stable, long-term molecular reprogramming under abiotic stress remains insufficiently understood. Addressing this gap, this review critically examines the impact of PGPR-mediated seed bio-priming on plant morpho-physiology and provides in-depth insights into molecular reprogramming, including phytohormonal regulation, antioxidant defense, osmolyte accumulation, and the activation of stress-responsive genes. By integrating these perspectives, this review underscores seed bio-priming as a novel, seed-centric, and sustainable strategy to mitigate multiple abiotic stresses. Finally, we identify existing research gaps and outline future directions to advance the practical deployment of rhizobacterial bio-priming for climate-resilient and sustainable agriculture.