Biodegradation of Hexachlorocyclohexane by two species of<i>Bacillus</i>isolated from contaminated soil

Giri, Krishna; Rawat, Anand Prabha; Rawat, Monica; Rai, J.P.N.

doi:10.1080/02757540.2013.844795

Cited by 19 publications

(7 citation statements)

References 34 publications

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“…The increasing concentration of lindane residues into the environment imposes severe health hazards such as carcinogenicity, mutagenicity, endocrine disruption, and immune-suppression diseases into the humans and other organisms (Cuozzo et al, 2017 ; Zhang et al, 2020 ). Bacterial strains genera such as Bacillus, Burkholderia, Pseudomonas, Kocuria, Archromobacter, Sphingomonas, Chromohalobacter , demonstrated lindane biodegradation under axenic as well as anoxic conditions via dehydrogenation, dehydrochlorination, and hydroxylation, results in complete degradation or mineralization (Giri et al, 2014 ; Cuozzo et al, 2017 ; Wang W. et al, 2018 ; Nagata et al, 2019 ; Zhang et al, 2020 ). A simplified catabolic pathway of lindane is presented in Figure 2 .…”

Section: Bioremediation Potential Of Microorganisms For Xenobiotic Comentioning

confidence: 99%

Recent Advanced Technologies for the Characterization of Xenobiotic-Degrading Microorganisms and Microbial Communities

Mishra

Lin

Pang

et al. 2021

Front. Bioeng. Biotechnol.

196

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Global environmental contamination with a complex mixture of xenobiotics has become a major environmental issue worldwide. Many xenobiotic compounds severely impact the environment due to their high toxicity, prolonged persistence, and limited biodegradability. Microbial-assisted degradation of xenobiotic compounds is considered to be the most effective and beneficial approach. Microorganisms have remarkable catabolic potential, with genes, enzymes, and degradation pathways implicated in the process of biodegradation. A number of microbes, including Alcaligenes, Cellulosimicrobium, Microbacterium, Micrococcus, Methanospirillum, Aeromonas, Sphingobium, Flavobacterium, Rhodococcus, Aspergillus, Penecillium, Trichoderma, Streptomyces, Rhodotorula, Candida, and Aureobasidium, have been isolated and characterized, and have shown exceptional biodegradation potential for a variety of xenobiotic contaminants from soil/water environments. Microorganisms potentially utilize xenobiotic contaminants as carbon or nitrogen sources to sustain their growth and metabolic activities. Diverse microbial populations survive in harsh contaminated environments, exhibiting a significant biodegradation potential to degrade and transform pollutants. However, the study of such microbial populations requires a more advanced and multifaceted approach. Currently, multiple advanced approaches, including metagenomics, proteomics, transcriptomics, and metabolomics, are successfully employed for the characterization of pollutant-degrading microorganisms, their metabolic machinery, novel proteins, and catabolic genes involved in the degradation process. These technologies are highly sophisticated, and efficient for obtaining information about the genetic diversity and community structures of microorganisms. Advanced molecular technologies used for the characterization of complex microbial communities give an in-depth understanding of their structural and functional aspects, and help to resolve issues related to the biodegradation potential of microorganisms. This review article discusses the biodegradation potential of microorganisms and provides insights into recent advances and omics approaches employed for the specific characterization of xenobiotic-degrading microorganisms from contaminated environments.

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Section: Bioremediation Potential Of Microorganisms For Xenobiotic Comentioning

confidence: 99%

Recent Advanced Technologies for the Characterization of Xenobiotic-Degrading Microorganisms and Microbial Communities

Mishra

Lin

Pang

et al. 2021

Front. Bioeng. Biotechnol.

196

View full text Add to dashboard Cite

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“…The migration and transformation of lindane in the soil is presented in Figure 2. Several factors control the lindane distribution and fate in the fields, including (a) loss by volatilization into the atmosphere, (b) loss through surface runoff, and (c) degradation by soil microbes and animals (Lal et al, 2010;Alvarez et al, 2012;Giri et al, 2014). The natural degradation of lindane is a very slow process and varies according to the environmental conditions (Elcey and Kunhi, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…The first report regarding the microbial degradation of lindane was published in 1967. Subsequently, numerous studies reported potential microorganisms for the efficient and rapid bioremediation of lindane-polluted environments (Sangwan et al, 2012;Githinji, 2015;Kumar et al, 2016). However, the literature lacks reviews regarding microbial resources and the mechanism of lindane degradation.…”

Section: Introductionmentioning

confidence: 99%

Insights Into the Biodegradation of Lindane (γ-Hexachlorocyclohexane) Using a Microbial System

et al. 2020

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Lindane (γ-hexachlorocyclohexane) is an organochlorine pesticide that has been widely used in agriculture over the last seven decades. The increasing residues of lindane in soil and water environments are toxic to humans and other organisms. Large-scale applications and residual toxicity in the environment require urgent lindane removal. Microbes, particularly Gram-negative bacteria, can transform lindane into non-toxic and environmentally safe metabolites. Aerobic and anaerobic microorganisms follow different metabolic pathways to degrade lindane. A variety of enzymes participate in lindane degradation pathways, including dehydrochlorinase (LinA), dehalogenase (LinB), dehydrogenase (LinC), and reductive dechlorinase (LinD). However, a limited number of reviews have been published regarding the biodegradation and bioremediation of lindane. This review summarizes the current knowledge regarding lindane-degrading microbes along with biodegradation mechanisms, metabolic pathways, and the microbial remediation of lindane-contaminated environments. The prospects of novel bioremediation technologies to provide insight between laboratory cultures and largescale applications are also discussed. This review provides a theoretical foundation and practical basis to use lindane-degrading microorganisms for bioremediation.

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“…The results of the present study indicate that K2 have the ability to degrade significant quantities of IPU at pH range of 7.0–7.5 with an optimum activity at pH 7.0 and reduced activity at pH 6.5. This supports the fact that pH has an effect on the growth or survival of the bacterial population, which explains the variation in IPU degradation rate observed at different pH values The data recorded over the incubation time revealed that during the first 5–10 days, there was slow biodegradation of IPU, which might represent a lag phase while it got accelerated as the incubation proceeded, most likely due to induction/activation of enzymes in the inoculated cultures (Hussain et al 2007 ; Giri et al 2014 ). In the present investigation along with pH, temperature has also been observed as a key factor for IPU degradation by K2.…”

Section: Resultsmentioning

confidence: 99%

Biodegradation of isoproturon by Pseudoxanthomonas sp. isolated from herbicide-treated wheat fields of Tarai agro-ecosystem, Pantnagar

et al. 2016

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A gram-negative, rod-shaped, isoproturon (IPU) utilizing bacterium was isolated from herbicide-applied wheat fields of Tarai agro-ecosystem, Pantnagar. The phylogenetic sequence analysis based on 16S rRNA sequence revealed that the isolate could be a distinct species within the genus Pseudomonas. The isolate was a close relative of Pseudoxanthomonas japonensis (95 % similarity) and designated as K2. The bacterial isolate showed positive reaction for oxidase, catalase, and 20 carbohydrates using KB009 Part A and B HiCarbohydrate TM Kit. Degradation experiments were conducted using 200 mg l -1 initial IPU as a source of carbon at different pH and temperatures. Maximum IPU degradation by K2 was observed at pH 7.0 and 30°C, while least degradation at 6.5 pH and 25°C. Addition of dextrose along with IPU as an auxiliary carbon source increased IPU degradation by 4.72 %, as compared to the IPU degradation without dextrose under optimum conditions. 4-isopropylaniline was detected as a degradation by-product in the medium. The present study demonstrated the IPU metabolizing capacity of a novel bacterial isolate K2 that can be a better choice for the remediation of IPU-contaminated sites.

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Biodegradation of Hexachlorocyclohexane by two species ofBacillusisolated from contaminated soil

Cited by 19 publications

References 34 publications

Recent Advanced Technologies for the Characterization of Xenobiotic-Degrading Microorganisms and Microbial Communities

Recent Advanced Technologies for the Characterization of Xenobiotic-Degrading Microorganisms and Microbial Communities

Insights Into the Biodegradation of Lindane (γ-Hexachlorocyclohexane) Using a Microbial System

Biodegradation of isoproturon by Pseudoxanthomonas sp. isolated from herbicide-treated wheat fields of Tarai agro-ecosystem, Pantnagar

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