Bioprospecting osmotolerant phyllosphere bacteria: functional characterization and biotechnological application for enhanced nutrient use efficiency in solanum crops
Aug 2026· World Journal of Microbiology & Biotechnology· Vol 42· 0 citations· 73 references
Medicine
TL;DR
The targeted foliar application of indigenous osmotolerant epiphytes offers a highly effective and ecologically sustainable approach to significantly reduce synthetic fertilizer dependency while enhancing crop resilience, vegetative growth, and pathogen defense.
This study introduces L. aquatilis strain MC3 as an emerging candidate for bioinoculant development and one of the first reports for identification of L. aquatilis as multifunctional PGPR from Himalayan ecosystems.
S. Devi, Riya Chandel, D. Thakur et al.· Frontiers in Systems Biology· 0 citations
Megathyrsus maximus (Guinea grass) is an important forage species for livestock production, whose productivity has been adversely affected by the excessive use of chemical fertilizers. The objective of this study was to isolate and characterize plant growth-promoting bacteria (PGPB) associated with the rhizosphere of M. maximus. Rhizosphere samples were collected and processed for bacterial isolation, followed by microbiological, biochemical, and molecular characterization. Plant growth-promoting traits were assessed through urease activity, phosphate solubilization, catalase activity, amylolytic activity, and indole-3-acetic acid (IAA) production. In addition, in vitro assays were conducted to evaluate seed germination, root length, leaf length, stem length, and fresh plant weight. The results demonstrated the successful isolation and identification of rhizosphere-associated bacteria with plant growth-promoting potential, regardless of their geographic origin, revealing considerable genetic diversity among the isolates. The best-performing strains were molecularly identified as Azospirillum lipoferum, Rhizobium etli, Klebsiella oxytoca, and Serratia marcescens. These findings highlight the potential of these bacterial species as biofertilizers to enhance the establishment, growth, and productivity of M. maximus, providing a sustainable alternative to reduce dependence on chemical fertilizers and supporting the development of more efficient and environmentally responsible livestock production systems under tropical conditions
Juan Pablo Avellaneda Vázquez, Karina Gabriela Martinez Lara, Karelys Edith Hidalgo Mendoza et al.· Multidisciplinary Collaborat...· 0 citations
The biotechnological potential of Mycobacterium agroflorensis as a promising microbial bioinput for sustainable agriculture is highlighted, supporting future studies aimed at field validation and the development of innovative biofertilizers for environmentally responsible crop production.
Luís Dias Ferreira Soares, Zilmar Timóteo Soares, Aarão Felipe Ataídes Lima et al.· ARACÊ· 0 citations
The use of beneficial microorganisms during the acclimatization and hardening of micropropagated potato plants reduces the need for chemical inputs and increases plant survival under various biotic and abiotic stress conditions. The combined application of these biotechnological techniques is known as biotization. This study aimed to quantify the ef fect of inoculation with Pseudomonas putida (strain M11) and Stenotrophomonas rhizophila (strain KN01) on the morphology of micropropagated potato plants during acclimatization and hardening. Potato plantlets were micropropagated on Murashige and Skoog (MS) culture medium, bacterial strains were characterized in vitro, and morphometric variables and plantlet survival were evaluated. P. putida (M11) exhibited phosphate-solubilizing potential, nitrogen-fixing ability, and the capacity to produce indole-3-acetic acid (IAA) and siderophores, resulting in increased plant survival. In contrast, S. rhizophila did not exhibit qualitative plant growth-promoting traits in vitro; however, during acclimatization it significantly increased plant height, stem diameter, and root length. During hardening, plantlets inoculated with P. putida showed greater fresh and dry biomass, as well as increased root length. No significant dif ferences were found between inoculation methods, whereas significant dif ferences were observed among treatments. These results suggest a possible synergistic interaction between micropropagated potato plants and the bacterial strains evaluated.
Nadia Martínez-Barrientos, B. Murillo-Amador, Nayelli A. Vidal Martínez et al.· REVISTA TERRA LATINOAMERICAN...· 0 citations
Bacterial inoculation improved plant development and demonstrated promising potential for application in sustainable agricultural systems, highlighting the biotechnological potential of M. agroflorensis as a candidate for the development of agricultural bioinputs, contributing to low-carbon agriculture and advancing research in agricultural microbiology.
Luís Dias Ferreira Soares, Zilmar Timóteo Soares, Aarão Felipe Ataídes Lima et al.· Revista ft· 0 citations
Biofertilisers are promoted as low-input tools for increasing legume productivity, yet the category encompasses biologically distinct interventions whose field performance is not equally reliable. This critical narrative review evaluates whether microbial inoculants increase the productivity of grain and forage legumes, with particular emphasis on harvestable yield rather than nodulation or vegetative growth alone. Literature published principally from 1990 to 21 June 2026 was appraised alongside selected foundational studies. Evidence was synthesised across rhizobial inoculation, plant growth-promoting rhizobacteria, phosphorus-solubilising bacteria, arbuscular mycorrhizal fungi, Trichoderma and multi-organism co-inoculation. The strongest evidence supports compatible, effective rhizobial inoculation when indigenous rhizobia are absent, sparse, poorly competitive or inefficient and when other constraints to biological nitrogen fixation are not dominant. Large on-farm datasets and field experiments show meaningful average yield gains in soybean and chickpea, but also wide site-to-site variation. By contrast, non-rhizobial co-inoculants often increase nodulation, root growth or biomass more consistently than grain yield. Meta-analyses of soybean co-inoculation illustrate this distinction: improvements in intermediate traits may occur without a statistically reliable increase in harvested yield, while other datasets show only modest additional yield beyond conventional rhizobial inoculation. Fungal partners can enhance phosphorus acquisition, symbiotic functioning and disease suppression, but responses depend strongly on soil phosphorus, native microbial communities, crop genotype, water status and formulation quality. Across inoculant classes, controlled-environment effects tend to exceed field effects, indicating that colonisation, competition, environmental stress and agronomic co-limitations constrain translation. Biofertilisers therefore do increase legume productivity under identifiable conditions, but they are not universally effective substitutes for balanced soil fertility management. Future progress requires multi-site, multi-season trials with robust comparators, molecular tracking of inoculant occupancy, strain-by-genotype-by-environment matching, product-quality verification and endpoints centred on yield stability, nutrient-use efficiency and farm-level value.
Manju M. George· Asian Soil Research Journal· 0 citations
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