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Journal article
Plant Growth-Promoting Rhizobacteria and Biochar as Drought Defense Tools: A Comprehensive Review of Mechanisms and Future Directions
Current issues in molecular biology, Vol.47(12), 1040
2025
Abstract
Drought stress, exacerbated by climate change, is a serious threat to global food security. This review examines the synergistic potential of plant growth-promoting rhizobacteria (PGPR) and biochar as a sustainable strategy for enhancing crop drought resilience. Biochar’s porous structure creates a protective “charosphere” microhabitat, enhancing PGPR colonization and survival. This partnership, in turn, induces multifaceted plant responses through: (1) the modulation of key phytohormones, including abscisic acid (ABA), ethylene (via 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity), and auxins; (2) improved nutrient solubilization and uptake; and (3) the activation of robust antioxidant defense systems. These physiological benefits are orchestrated by a profound reprogramming of the plant transcriptome, which shifts the plant’s expression profile from a stressed to a resilient state by upregulating key genes (e.g., Dehydration-Responsive Element-Binding protein (DREB), Light-Harvesting Chlorophyll B-binding protein (LHCB), Plasma membrane Intrinsic Proteins (PIPs)) and downregulating stress-senescence markers. To realize a climate-resilient farming future, research must be strategically directed toward customizing biochar–PGPR combinations, validating their long-term performance in agronomic environments, and uncovering the molecular bases of their action.
Details
- Title
- Plant Growth-Promoting Rhizobacteria and Biochar as Drought Defense Tools: A Comprehensive Review of Mechanisms and Future Directions
- Authors/Creators
- Faezeh Parastesh - University of ManitobaBehnam Asgari Lajayer - Dalhousie UniversityBernard Dell - Centre for Crop and Food Innovation, Murdoch University, Australia
- Publication Details
- Current issues in molecular biology, Vol.47(12), 1040
- Publisher
- MDPI
- Number of pages
- 24
- Identifiers
- 991005845958607891
- Copyright
- © 2025 by the authors.
- Murdoch Affiliation
- Centre for Crop and Food Innovation
- Language
- English
- Resource Type
- Journal article
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