Role of Plant Growth Promoting Rhizobacteria in Agricultural Sustainability—A Review

By Pravin Vejan, Rosazlin Abdullah, T. Khadiran, S. Ismail, Amru Nasrulhaq Boyce. Molecules, 2016

1,170 citations recorded by the source corpus.

Plant growth promoting rhizobacteria (PGPR) shows an important role in the sustainable agriculture industry. The increasing demand for crop production with a significant reduction of synthetic chemical fertilizers and pesticides use is a big challenge nowadays. The use of PGPR has been proven to be an environmentally sound way of increasing crop yields by facilitating plant growth through either a direct or indirect mechanism. The mechanisms of PGPR include regulating hormonal and nutritional balance, inducing resistance against plant pathogens, and solubilizing nutrients for easy uptake by plants. In addition, PGPR show synergistic and antagonistic interactions with microorganisms within the rhizosphere and beyond in bulk soil, which indirectly boosts plant growth rate. There are many bacteria species that act as PGPR, described in the literature as successful for improving plant growth. However, there is a gap between the mode of action (mechanism) of the PGPR for plant growth and the role of the PGPR as biofertilizer—thus the importance of nano-encapsulation technology in improving the efficacy of PGPR. Hence, this review bridges the gap mentioned and summarizes the mechanism of PGPR as a biofertilizer for agricultural sustainability.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/2a6e1c09f252f26601f757f1c169c5d6adfff797

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In Plant Science

1. Meenu Saraf
2. O. Ojuederie
3. M. Reddy
4. A. Basu
5. Sadaf Kalam
6. O. Babalola
7. T. Patel
8. C. Jha

Citations in the corpus

• Biosynthesis of phytohormones from novel rhizobacterial isolates and their in vitro plant growth-promoting efficacy (2017, background): “Plant regulators exert their influences on the physiology and morphology of plants, but in very less amount, and they are also synthesized exogenously by natural and synthetic means (Vejan et al. 2016).”
• Plant Growth Promoting Rhizobacteria (PGPR) as Green Bioinoculants: Recent Developments, Constraints, and Prospects (2021, background): “As biofertilizers, PGPRs should be able to sufficiently colonize host plant roots, create a proper rhizosphere for plant growth, and increase the bioavailability of N, P, K, and antagonistic properties [16,45].”
• Microbial and Plant-Assisted Bioremediation of Heavy Metal Polluted Environments: A Review (2017, background): “When Fe is limited in the soil, microbial siderophores solubilize and remove Fe from the soil and supply plants with Fe, thereby enhancing their growth [169].”
• Utilizing the Potential of Microorganisms for Managing Arsenic Contamination: A Feasible and Sustainable Approach (2018, background): “In this regard, As-resistant plant growth promoting microorganisms (PGPMs) might be envisioned as safe, lowcost, promising, and sustainable biological tools for mitigating As toxicity in plants and for regulating As accumulation in crop and/or phytoremediator plants (Vejan et al., 2016).”