Biodetoxification of Toxic Heavy Metals by Marine Metal Resistant Bacteria- A Novel Approach for Bioremediation of the Polluted Saline Environment

Mohapatra, Ranjan Kumar; Parhi, Pankaj Kumar; Patra, Jayanta Kumar; Panda, C. S.; Thatoi, Hrudayanath

doi:10.1007/978-981-10-6847-8_15

Cited by 21 publications

(6 citation statements)

References 161 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In plants, salinity exerts a selective pressure that could induce resistance to other stresses, such as metal toxicity [82], and the same process could have happened for microbial communities. Moreover, Mohapatra et al [83] suggested that most of the bacteria isolated from saline environments have to cope with multiple fluctuating abiotic parameters, such as temperature, pH, and salinity, and are consequently likely to tolerate other stresses, an idea which is also supported by Yuan et al [84]. Dealing with salinity implies adaptations related to proteins' stability [85], lipid composition and membrane fluidity [15,86], ion homeostasis, and the transport system to regulate Na concentrations in cells, the production of compatible solutes [15].…”

Section: Potential Of Halotolerant and Halophilic Microbes In The Med...mentioning

confidence: 99%

Potential of Halophytes-Associated Microbes for the Phytoremediation of Metal-Polluted Saline Soils

et al. 2023

View full text Add to dashboard Cite

Saline ecosystems are often the target of spills and releases of pollutants such as metals, as many industrial companies settle in or around these areas. Metal pollution is a major threat for humans and ecosystems. In line with sustainable development, nature-based solutions and biological tools such as phytoremediation offer eco-friendly and low-cost solutions to remove metals or limit their spread in the environment. Many plant-growth-promoting (PGP) effects are frequently prospected in plant-associated microbes such as the production of auxins, siderophores, or extracellular polymeric substances to enhance phytoremediation. Halophytes are nowadays presented as good phytoremediators for metal-contaminated saline environments such as coastal regions, but little is known about the potential of their associated microbes in the bioaugmentation of this technique. Here, we review the studies that focused on halophytes-associated microbes and their plant-growth-promotion capacities. Moreover, we discuss the limitation and applicability of bioaugmented phytoremediation in saline ecosystems.

show abstract

Section: Potential Of Halotolerant and Halophilic Microbes In The Med...mentioning

confidence: 99%

Potential of Halophytes-Associated Microbes for the Phytoremediation of Metal-Polluted Saline Soils

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Biosorption mechanisms can be demonstrated extracellularly by animate and inanimate microorganism cells due to their metabolic independence, whereas bioaccumulation takes place intracellularly by animate cells, which primarily determine this process as metabolic based ( Jobby et al., 2018 ; Srinath et al., 2002 ). Specifically, in the biosorption mechanism for heavy metal–bacteria interaction, heavy metals can be bound to active and inactive bacteria cells without the use of adenosine triphosphate (ATP) because this process does not require energy to activate ( Mohapatra et al., 2017 ; Timková et al., 2018 ). In comparison, bioaccumulation initiates quickly and proceeds to a moderate stage allowing ion exchange or physical adsorption for metal attachment and transportation, based on metabolic activity involving ATP ( Srinath et al., 2002 ).…”

Section: Analysis Of Bioaugmentation Applicability In Treating Heavy ...mentioning

confidence: 99%

Practical limitations of bioaugmentation in treating heavy metal contaminated soil and role of plant growth promoting bacteria in phytoremediation as a promising alternative approach

Kurniawan

Ramli

Said

et al. 2022

Heliyon

View full text Add to dashboard Cite

“…Lead (Pb) is one of the toxic heavy metals formed as a result of the activities of many industries, such as metal plating, metal refining, power plants, batteries, fuel additives, pesticide and pigment production, automotive, and aviation (Mohapatra et al, 2017). The waste and sewage discharges of these industries are important sources of water pollution (Yu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Equilibrium, kinetic, and thermodynamic studies on the biosorption of lead by human metallothionein gene‐cloned bacteria as a novel biosorbent

Akkurt,

Uçkun,

Oğuz

et al. 2024

Water Environment Research

View full text Add to dashboard Cite

Heavy metals are the main pollutants in water and are an important global problem that threatens human health and ecosystems. In recent years, there has been an increasing interest in the use of genetically modified bacteria as an eco‐friendly method to solve heavy metal pollution problems. The goal of this study was to generate genetically modified Escherichia coli expressing human metallothioneins (hMT2A and hMT3) and to determine their tolerance, bioaccumulation, and biosorption capacity to lead (Pb2+). Recombinant MT2A and MT3 strains expressing MT were successfully generated. Minimum inhibition concentrations (MIC) of Pb for MT2A and MT3 were found to be 1750 and 2000 mg L−1, respectively. Pb2+ resistance and bioaccumulation capacity of MT3 were higher than MT2A. Therefore, only MT3 biosorbent was used in Pb2+ biosorption, and its efficiency was examined by performing experiments in a batch system. Pb2+ biosorption by MT3 was evaluated in terms of isotherms, kinetics, and thermodynamics. The results showed that Pb biosorption fits to the Langmuir isotherm model and the pseudo‐first‐order kinetic model, and the reaction is exothermic. The maximum Pb2+ capacity of the biosorbent was 50 mg Pb2+g−1. The potential of MT3 in Pb biosorption was characterized by Fourier‐transform infrared spectroscopy (FT‐IR), scanning electron microscopy (SEM), and scanning transmission electron microscopy (STEM) analyses. The desorption study showed that the sorbent had up to 74% recovery and could be effectively used four times. These findings imply that this biosorbent can be applied as a promising, precise, and effective means of removing Pb2+ from contaminated waters.Practitioner Points In this study, the tolerance levels, bioaccumulation, and biosorption capacities of Pb in aqueous solutions were determined for the first time in recombinant MT2A and MT3 strains in which human MT2A and MT3 genes were cloned. The biosorbent of MT3, which was determined to be more effective in Pb bioaccumulation, was synthesized and used in Pb biosorption. The Pb biosorption mechanism of MT3 biosorbent was identified using isotherm modeling, kinetic modeling, and thermodynamic studies. The maximum Pb removal percentage capacity of the biosorbent was 90%, whereas the maximum biosorption capacity was up to 50 mg Pb2+g−1. These results indicated that MT3 biosorbent has a higher Pb biosorption capacity than existing recombinant biosorbents. MT3 biosorbent can be used as a promising and effective biosorbent for removing Pb from wastewater.

show abstract

Biodetoxification of Toxic Heavy Metals by Marine Metal Resistant Bacteria- A Novel Approach for Bioremediation of the Polluted Saline Environment

Cited by 21 publications

References 161 publications

Potential of Halophytes-Associated Microbes for the Phytoremediation of Metal-Polluted Saline Soils

Potential of Halophytes-Associated Microbes for the Phytoremediation of Metal-Polluted Saline Soils

Practical limitations of bioaugmentation in treating heavy metal contaminated soil and role of plant growth promoting bacteria in phytoremediation as a promising alternative approach

Equilibrium, kinetic, and thermodynamic studies on the biosorption of lead by human metallothionein gene‐cloned bacteria as a novel biosorbent

Contact Info

Product

Resources

About