Biological approaches of fluoride remediation: potential for environmental clean-up

Katiyar, Priya; Pandey, Neha; Sahu, Keshav Kant

doi:10.1007/s11356-020-08224-2

Cited by 39 publications

(18 citation statements)

References 67 publications

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“…The most common cyanotoxin produced by freshwater cyanobacteria is microcystin LR [105]. Fluoride is the most electronegative element, with proton as hydrogen fluoride, which enters the bacterial cells via diffusion, as hydrogen fluoride dissociates into H + and F − ions [243]. These ions interfere with the enzymes of glycolysis and fluoride-ATPases.…”

Section: Bacterial Remediationmentioning

confidence: 99%

“…In fluoride-resistant bacteria, these enzymes are believed to be mutated [244]. The bacterial cell wall comprises carbohydrates, phosphates, sulfhydryl, and amines; these groups efficiently reduce fluoride and thus help to adhere fluoride ions to the surface [104,243]. Different microbial processes can influence the toxicity and transport of metal into bacterial cells, including bioaccumulation, biosorption, biotransformation, and secretion of ligands such as siderophores or biosurfactants that affect solubility and thus the availability of these contaminants [103].…”

Section: Bacterial Remediationmentioning

confidence: 99%

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Bioaccumulation of Fluoride in Plants and Its Microbially Assisted Remediation: A Review of Biological Processes and Technological Performance

et al. 2021

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Fluoride is widely found in soil–water systems due to anthropogenic and geogenic activities that affect millions worldwide. Fluoride ingestion results in chronic and acute toxicity, including skeletal and dental fluorosis, neurological damage, and bone softening in humans. Therefore, this review paper summarizes biological processes for fluoride remediation, i.e., bioaccumulation in plants and microbially assisted systems. Bioremediation approaches for fluoride removal have recently gained prominence in removing fluoride ions. Plants are vulnerable to fluoride accumulation in soil, and their growth and development can be negatively affected, even with low fluoride content in the soil. The microbial bioremediation processes involve bioaccumulation, biotransformation, and biosorption. Bacterial, fungal, and algal biomass are ecologically efficient bioremediators. Most bioremediation techniques are laboratory-scale based on contaminated solutions; however, treatment of fluoride-contaminated wastewater at an industrial scale is yet to be investigated. Therefore, this review recommends the practical applicability and sustainability of microbial bioremediation of fluoride in different environments.

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Section: Bacterial Remediationmentioning

confidence: 99%

Section: Bacterial Remediationmentioning

confidence: 99%

Bioaccumulation of Fluoride in Plants and Its Microbially Assisted Remediation: A Review of Biological Processes and Technological Performance

et al. 2021

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“…Application of hyperaccumulator plants for removal of F − from contamination sites has opened a new vista as green technology or phytoremediation. A number of plant species including grasses, legumes, vegetables, trees, aquatic plants, algae, and the so-called hyperaccumulators are being used for remediation of F − -rich soil and water through phytoremediation approaches (Baunthiyal and Ranghar 2013;Katiyar et al 2020). They have phytostabilization and phytoextraction mechanisms for the phytoremediation process.…”

Section: Recent Developments Through Integrated Approachesmentioning

confidence: 99%

“…More recently, Chaudhary et al (2019) conducted a field study in the F − endemic area of Rajasthan state, India, and suggested that Pseudomonas fluorescence can increase F − bioaccumulation and biomass of F − hyperaccumulator arid plant Prosopis juliflora. More recently, Katiyar et al (2020) suggested biotechnological approaches in genetic manipulation for degradation and F − remediation by increasing interaction among the plant microbes. Thus, integrated approaches can be used in eco-friendly ways on a large scale for removal of F − and enhancment of crop production.…”

Section: Recent Developments Through Integrated Approachesmentioning

confidence: 99%

“…Exogenous applications of stress protectants and mineral chemicals would facilitate the reduction of F − accumulation with enhanced tolerance capacity, which may be helpful for F − -sensitive crop plants. Recently, few reports clarified that some bioactive compounds, F − transporters, stress proteins, phytohormones, and minerals with the help of microbes regulate the F − bioavailability and accumulation, improving growth and physiology of crop plants (Ram et al 2014;Yadu et al 2018b;Katiyar et al 2020). However, there is limited information about the interactive effects and impacts of exogenously applied protectants on F − accumulation and its tolerance.…”

Section: Introductionmentioning

confidence: 99%

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Recent Developments in Understanding Fluoride Accumulation, Toxicity, and Tolerance Mechanisms in Plants: an Overview

Gadi

Kumar

Goswami

et al. 2020

J Soil Sci Plant Nutr

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Excess fluoride (F − ) inhibits the growth and metabolism of several crop plants, while some have an innate ability for F − tolerance. The present study was undertaken to explain how plants tolerate F − toxicity and understand the efficacy of exogenous stress protectants and phytoremediation approaches for F − homeostasis and tolerance of crop plants. This review comprehends existing information available so far on the F − accumulation toxicity and tolerance mechanisms. A high level of F − inhibits plant growth, water and nutrition uptake, enzyme activity, and yield. This review concludes that plants tolerate through F − homeostasis (exclusion, chelating, and compartmentalization) and gene activation for enhanced pathways of antioxidants, hormones, osmolytes, stress proteins, transporters, and metabolites. Exogenously applied stress protectants like salicylic acid (SA), polyamines (PAs), melatonin (Mel), glycine betaine, calcium (Ca 2+ ), and nanoparticles are differentially effective in reducing F − accumulation and toxicity by regulating various pathways. Application of minerals minimizes the F − accumulation through changing pH of soil, chelate formation with F − , and permeability of the cell membrane. Although many of the physiological aspects (enzyme activities, F − accumulation and regulation) were studied earlier, however, an effort has been made for the first time to understand the genetic basis and role of stress protectants and mineral nutrition, regulating these physiological activities, and explore new integrated approaches related to F − mitigation by means of phytoremediation. This review covers the recent development in F − transporters, gene expression, and biochemical and hormonal levels which could be utilized in regulating F − toxicity through omics and transgenic approaches in the future.

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Environment and Green Technology

Let¹,

Majhi²,

Kabiraj³

et al. 2022

Innovations in Environmental Biotechnology

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Biological approaches of fluoride remediation: potential for environmental clean-up

Cited by 39 publications

References 67 publications

Bioaccumulation of Fluoride in Plants and Its Microbially Assisted Remediation: A Review of Biological Processes and Technological Performance

Bioaccumulation of Fluoride in Plants and Its Microbially Assisted Remediation: A Review of Biological Processes and Technological Performance

Recent Developments in Understanding Fluoride Accumulation, Toxicity, and Tolerance Mechanisms in Plants: an Overview

Environment and Green Technology

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