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PGPR-driven phytoremediation and physiobiochemical response of Miscanthus × giganteus to stress induced by the trace elements
Abstract
The effect of inoculation of Miscanthus × giganteus Greef et Deu by the plant growth promoting rhizobacteria (PGPRs) to the phytoremediation process and physio-biochemical plant's parameters was investigated in soil contaminated with the trace elements (TEs) from the Tekeli mining complex, Kazakhstan. Yeast Trichosporon sp. CA1, strains Rhizobium sp. Zn1-1, Shinella sp. Zn5-6, and Pseudomonas sp. CHA1-4, resistant to Zn and Pb, were isolated from the rhizosphere of M × g when the plant was cultivated in the same contaminated soil. Results illustrated that inoculation improved M × g adaptability to TEs toxicity by increasing the tolerance index to 2.9. The treatment enhanced the aboveground biomass yield by up to 163%, root biomass by up to 240%, chlorophyll content by up to 30%, and Chl a/b ratio by up to 21%. Through M × g active growth and development, the peak activity of antioxidant enzymes was observed: activity of superoxide dismutase and glutathione reductase was induced, while the activity of catalase and ascorbate peroxidase was inhibited. Based on bioconcentration and translocation factors it was revealed that PGPRs selectively increased the uptake of TEs or stabilised them in the M × g rhizosphere. Inoculation with PGPRs increased the stabilization of Pb, V, Cr, Co, Ni, Cu, Cd, As, and Ba in the soil and plant tissues. Further research should focus on ex situ experiments using isolated PGPRs.
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As a sterile triploid hybrid, M × g provides reliable growth on marginal or contaminated land without becoming invasive.
“As a sterile triploid hybrid, it provides reliable growth on marginal or contaminated land without becoming invasive [13–15].”
From Differential effects of sewage sludge and food waste biochars on Miscanthus × giganteus phytostabilization on acidic brownfield soil (2026) · cites this paper as [14]
M × g is preferred for phytoremediation over other Miscanthus species due to its high biomass productivity, extensive root system, high tolerance to toxic contaminants, and low translocation of pollutants to its harvestable aboveground parts.
“M × g is preferred for phytoremediation over other Miscanthus species due to its high biomass productivity, extensive root system, high tolerance to toxic contaminants, and low translocation of pollutants to its harvestable aboveground parts.”
From Differential effects of sewage sludge and food waste biochars on Miscanthus × giganteus phytostabilization on acidic brownfield soil (2026) · cites this paper as [14]
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Newton, R. A., Souki, K. S. A., Kwoczynski, Z., Popelka, J., & Pidlisnyuk, V. (2026) · Environmental Research Communications · doi:10.1088/2515-7620/ae6237 · Cited by 3
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Metadata
- Authors
- Nurzhanova, A. A., Pidlisnyuk, V., Berzhanova, R., Nurmagambetova, A. S., Terletskaya, N., Omirbekova, N., Berkinbayev, G., & Mamirova, A.
- Affiliations
- Institute of Plant Biology and Biotechnology (KZ)
- Jan Evangelista Purkyně University in Ústí nad Labem (CZ)
- Al-Farabi Kazakh National University (KZ)
- Corresponding author
- Mamirova, Aigerim
- ORCID
- Venue
- Environmental Science and Pollution Research
- Published
- 2023-08-11
- Volume
- 30
- Issue
- 42
- Pages
- 96098-96113
- ISSN
- 0944-1344 (ISSN-L)
- 1614-7499
- OpenAlex
- W4385728332
- Cited by
- 18
- References
- 0
- Citations by year
- 2026: 2 · 2025: 11 · 2024: 5
- FWCI
- 1.20
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Environmental Science and Pollution Research (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant-Microbe Interactions and Immunity
- Physical Sciences › Environmental Science › Pollution › Microbial bioremediation and biosurfactants
- Keywords
- plant growth-promoting rhizobacteria, Miscanthus × giganteus, phytoremediation, trace elements, heavy metal contamination, mine soils, rhizosphere bacteria, zinc tolerance, lead tolerance, antioxidant enzymes, biomass yield, bioconcentration factor, translocation factor, metal stabilization
- MeSH terms
- Biodegradation, Environmental, Poaceae, Lead, Plants, Soil, Soil Pollutants, Trace Elements, Plant Roots, Metals, Heavy
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