Enhancing plant growth promoting rhizobacterial activities through consortium exposure: A review

Abstract

Plant Growth Promoting Rhizobacteria (PGPR) has gained immense importance in the last decade due to its in-depth study and the role of the rhizosphere as an ecological unit in the biosphere. A putative PGPR is considered PGPR only when it may have a positive impact on the plant after inoculation. From the various pieces of literature, it has been found that these bacteria improve the growth of plants and their products through their plant growth-promoting activities. A microbial consortium has a positive effect on plant growth-promoting (PGP) activities evident by the literature. In the natural ecosystem, rhizobacteria interact synergistically and antagonistically with each other in the form of a consortium, but in a natural consortium, there are various oscillating environmental conditions that affect the potential mechanism of the consortium. For the sustainable development of our ecological environment, it is our utmost necessity to maintain the stability of the rhizobacterial consortium in fluctuating environmental conditions. In the last decade, various studies have been conducted to design synthetic rhizobacterial consortium that helps to integrate cross-feeding over microbial strains and reveal their social interactions. In this review, the authors have emphasized covering all the studies on designing synthetic rhizobacterial consortiums, their strategies, mechanism, and their application in the field of environmental ecology and biotechnology.

A comprehensive approach to evaluate microplastic biodegradation potential of mangrove rhizobacteria

“…The above three abundant bacterial isolates were used for the formulation of a bacterial consortium. Various studies have been conducted to develop synthetic bacterial consortiums to evaluate their potential capabilities as consortia (Singh et al, 2023). In a consortium, the activities of the bacterial isolates could be enhanced or reduced depending on the interactions among them due to oscillating environmental conditions.…”

Towards further understanding the applications of endophytes: enriched source of bioactive compounds and bio factories for nanoparticles

“…Endophyte species produce several enzymes, including proteases, pectinases, amylases, cellulases, xylanases, laccases, lipases, and others, which are significant in many industrial industries ( Table 2 ) ( Zaferanloo et al., 2014 ). Additionally, some enzymes generated by endophytic species play crucial roles in a wide range of industries, including the production of biofuels in the energy sector, which is used as an alternative source of conventional fuel; the development of pigments for the food industry; the manufacturing of enzymes to degrade polyurethane; and many more ( Mengistu, 2020 ; Singh et al., 2023 ). Endophytes Phomopsis, Cephalosporium, Microsphaeropsis, and Nigrospora were isolated from plants Taxus chinensis var.…”

Tomato seed bio-priming with Pseudomonas aeruginosa strain PAR: a study on plant growth parameters under sodium fluoride stress

“…By optimizing the plant’s response to external stimuli, PGPR helps to improve plant health and productivity while reducing the need for harmful chemicals and pesticides. PGPR has frequently been discovered to boost the synthesis process of chemicals related to defense in the host plants ( Kumar and Verma, 2018 ; Singh et al, 2023 ).…”