Plant growth-promoting bacteria as inoculants in agricultural soils

By Rocheli de Souza, A. Ambrosini, L. Passaglia. Genetics and Molecular Biology, 2015

904 citations recorded by the source corpus.

Abstract Plant-microbe interactions in the rhizosphere are the determinants of plant health, productivity and soil fertility. Plant growth-promoting bacteria (PGPB) are bacteria that can enhance plant growth and protect plants from disease and abiotic stresses through a wide variety of mechanisms; those that establish close associations with plants, such as the endophytes, could be more successful in plant growth promotion. Several important bacterial characteristics, such as biological nitrogen fixation, phosphate solubilization, ACC deaminase activity, and production of siderophores and phytohormones, can be assessed as plant growth promotion (PGP) traits. Bacterial inoculants can contribute to increase agronomic efficiency by reducing production costs and environmental pollution, once the use of chemical fertilizers can be reduced or eliminated if the inoculants are efficient. For bacterial inoculants to obtain success in improving plant growth and productivity, several processes involved can influence the efficiency of inoculation, as for example the exudation by plant roots, the bacterial colonization in the roots, and soil health. This review presents an overview of the importance of soil-plant-microbe interactions to the development of efficient inoculants, once PGPB are extensively studied microorganisms, representing a very diverse group of easily accessible beneficial bacteria.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/a87de818c77ad87ebc205a3740be2e72d14103bf

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In Plant Science

1. In-Jung Lee
2. M. Reddy
3. Dhananjaya P. Singh
4. Ratna Prabha
5. Harkesh B. Singh
6. A. Iqbal
7. Humaira Gul
8. A. Basu

Citations in the corpus

• Abiotic Stress Responses and Microbe-Mediated Mitigation in Plants: The Omics Strategies (2017, background): “The role of microorganisms to alleviate abiotic stresses in plants has been the area of great concern in past few decades (de Zelicourt et al., 2013; Nadeem et al., 2014; Souza et al., 2015).”
• Utilizing the Potential of Microorganisms for Managing Arsenic Contamination: A Feasible and Sustainable Approach (2018, background): “It can induce hormone production, nutrients release from soil, and enhance development of root system (de Souza et al., 2015).”
• Plant Growth Promoting Rhizobacteria (PGPR) as Green Bioinoculants: Recent Developments, Constraints, and Prospects (2021, background): “In addition to the genetic manipulation of the crop physiology and metabolism for yield enhancement, certain members of the soil microbial community, particularly those residing in the plant rhizosphere, might assist plants in preventing or partially overcoming the environmental stresses [8,9].”
• Effects of Biofertilizer Produced from Bradyrhizobium and Streptomyces griseoflavus on Plant Growth, Nodulation, Nitrogen Fixation, Nutrient Uptake, and Seed Yield of Mung Bean, Cowpea, and Soybean (2019, background): “Plant growth-promoting bacteria (PGPB) enhance plant growth by affecting the availability of nutrients originating from processes such as BNF and phosphate solubilization, alleviating stress through the modulation of 1-aminocyclopropane-1-carboxylate deaminase expression, and producing phytohormones”
• Plant growth promoting endophytic fungi Asprgillus fumigatus TS1 and Fusarium proliferatum BRL1 produce gibberellins and regulates plant endogenous hormones (2018, background): “Such endophytic strains can be utilized as biofertilizers in agriculture to promote crop productivity due to their ability to release phytoharmones and their supplements to control/regulate different physiological process in plants to improve plant growth (Glick 2012; Souza et al. 2015).”