ArticleJournal, genetic engineering & biotechnology2021
Improved chromium tolerance of Medicago sativa by plant growth-promoting rhizobacteria (PGPR).
Article in Journal, genetic engineering & biotechnology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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Who cites it
27 citing papers in PubMed, 103 citations in OpenAlex.
- Integrating pharmacologically important flora into phytoremediation: The role of bacillus strains in mitigating chromium toxicity and enhancing rhizostabilization.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2026Article
- Strigolactone-mediated regulation of chromium uptake, redox homeostasis, and photosynthetic carbon metabolism during Cr (VI) stress tolerance in Capsicum annuum L.Plant cell reports · 2026Article
- Aluminum stress responses and beneficial bacterial traits inFrontiers in plant science · 2026Review
- A Review of the Regulatory Role of Plant Growth-Promoting Rhizobacteria in Alfalfa Under Stress Conditions.Plants (Basel, Switzerland) · 2025Review
- Heavy metals toxicity in plants: understanding mechanisms and developing coping strategies for remediation: a review.Bioresources and bioprocessing · 2025Review
- Bioaugmentation with Plant Growth-Promoting Rhizobacteria Alleviates Chromium and Salt Stress in Rice Through the Improvement of Physiology, Ion Homeostasis, and Antioxidant Defense.Microorganisms · 2025Article
- Enhancement of Tomato Growth Through Rhizobacteria and Biocontrol of Associated Diseases.Life (Basel, Switzerland) · 2025Article
- Article
- Unleashing rhizobacteria for sustainable soil remediation: PGPR roles in heavy metal tolerance, detoxification, and plant productivity.Frontiers in microbiology · 2025Review
- Understanding abiotic stress in alfalfa: physiological and molecular perspectives on salinity, drought, and heavy metal toxicity.Frontiers in plant science · 2025Review
- Metal-tolerantPlant signaling & behavior · 2024Article
- Microbes mediated alleviation of chromium (Cr VI) stress for improved phytoextraction in fodder maize (Heliyon · 2024Article
- Microbial Contributions to Heavy Metal Phytoremediation in Agricultural Soils: A Review.Microorganisms · 2024Review
- Role of Plant-Growth-Promoting Rhizobacteria in Plant Machinery for Soil Heavy Metal Detoxification.Microorganisms · 2024Review
- Microbial mediated remediation of heavy metals toxicity: mechanisms and future prospects.Frontiers in plant science · 2024Review
- Use of plant growth-promoting bacteria to facilitate phytoremediation.AIMS microbiology · 2024Review
- The Role of the Plant-Soil Relationship in Agricultural Production-With Particular Regard to PGPB Application and Phytoremediation.Microorganisms · 2023Article
- Bacterial Communities Associated with the Roots ofMicroorganisms · 2023Review
- Article
- Metal-tolerant and siderophore producing Pseudomonas fluorescence and Trichoderma spp. improved the growth, biochemical features and yield attributes of chickpea by lowering Cd uptake.Scientific reports · 2023Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSoil pollution by heavy metals increases the bioavailability of metals like hexavalent chromium (Cr (VI)), subsequently limiting plant growth and reducing the efficiency of phytoremediation. Plant growth-promoting rhizobacteria (PGPR) have substantial potential to enhance plant growth as well as plant tolerance to metal stress. The aim of this research was to investigate Cr (VI) phytoremediation enhancement by PGPR.
resultsThe results showed that the 27 rhizobacterial isolates studied were confirmed as Cr (VI)-resistant PGPR, by using classical biochemical tests (phosphate solubilization, nitrogen fixation, indole acetic acid, exopolysaccharides, hydrogen cyanide, siderophores, ammonia, cellulase, pectinase, and chitinase production) and showed variable levels of Cr (VI) resistance (300-600 mg/L). The best four selected Cr (VI)-resistant PGPR (NT15, NT19, NT20, and NT27) retained most of the PGP traits in the presence of 100-200 mg/L concentrations of Cr (VI). The inoculation of Medicago sativa with any of these four isolates improved the shoot and root dry weight. The NT27 isolate identified using 16S rDNA gene sequence analyses as a strain of Pseudomonas sp. was most effective in terms of plant growth promotion and stress level decrease. It increased shoot and root dry weights of M. sativa by 97.6 and 95.4%, respectively, in the presence of Cr (VI) when compared to non-inoculated control plants. It also greatly increased chlorophyll content and decreased the levels of stress markers, malondialdehyde, hydrogen peroxide, and proline. The results of the effect of Pseudomonas sp. on Cr content and bioaccumulation factor (BAF) of the shoots and roots of M. sativa plants showed the increase of plant biomass concomitantly with the increase of Cr root concentration in inoculated plants. This would lead to a higher potential of Cr (VI) phytostabilization.
conclusionsThis study demonstrates that the association M. sativa-Pseudomonas sp. may be an efficient biological system for the bioremediation of Cr (VI)-contaminated soils.
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