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Insight to chromium homeostasis for combating chromium contamination of soil: Phytoaccumulators-based approach

Pandey, AK and Gautam, A and Singh, AK (2023) Insight to chromium homeostasis for combating chromium contamination of soil: Phytoaccumulators-based approach. In: Environmental Pollution, 322 .

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Official URL: https://doi.org/10.1016/j.envpol.2023.121163


Chromium (Cr) is a naturally occurring, carcinogenic heavy metal that has become a pressing concern in recent decades for environmentalists. Due to high anthropogenic activities, the concentration of Cr has crossed the environmental threshold levels and consequently contaminated soil and water. The high solubility of Cr ions in the groundwater results in its high uptake by the plants leading to phytotoxicity and yield loss. The dearth of efficient and cost-effective treatment methods has resulted in massive chromium pollution. However, some phytoaccumulators capable of accumulating Cr in high amounts in their shoots and then performing their metabolic activity typically have been identified. Chromium bioremediation using phytoaccumulators is very contemplative due to its eco-friendly and cost-effective outcome. These accumulators possess several mechanisms, such as biosorption, reduction, efflux, or bioaccumulation, naturally or acquired to counter the toxicity of chromium. This review focuses on the detoxification mechanism of Cr by the phytoaccumulator species, their responses against Cr toxicity, and the scope for their application in bioremediation. Besides, Cr bioavailability, uptake, distribution, impairment of redox homeostasis, oxidative stress, and phytotoxicity imposed on the plants are also summarized. Further, the knowledge gap and prospects are also discussed to fill these gaps and overcome the problem associated with the real-time applicability of phytoaccumulator-based bioremediation. © 2023 Elsevier Ltd

Item Type: Journal Article
Publication: Environmental Pollution
Publisher: Elsevier Ltd
Additional Information: The copyright for this article belongs to Elsevier Ltd.
Keywords: Biochemistry; Bioremediation; Biotechnology; Cost effectiveness; Detoxification; Groundwater; Heavy metals; Soil pollution; Toxicity, Anthropogenic activity; Carcinogenics; Chromium contamination; Environmental threshold; Homoeostasis; Naturally occurring; Phytoaccumulator; Phytoremediation; Pressung; Sequestration, Chromium
Department/Centre: Division of Biological Sciences > Microbiology & Cell Biology
Date Deposited: 25 Feb 2023 07:36
Last Modified: 25 Feb 2023 07:36
URI: https://eprints.iisc.ac.in/id/eprint/80669

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