Bacterial and fungal bioremediation strategies

Magan, Naresh; Gouma, Sofia; Fragoeiro, Sílvia; Shuaib, Mohd.; Bastos, Ana Catarina

doi:10.1016/b978-0-323-85455-9.00028-x

Cited by 12 publications

(7 citation statements)

References 77 publications

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“…Yet, given the aforementioned negative impact of MB on soil microbial communities, it is conceivable that high in situ MB concentrations hamper its degradation kinetics (Kaur et al, 2022). Furthermore, MB-transformation capabilities of autochthonous soil microbial communities appear to be generally low (Magan et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Immobilization of metribuzin-degrading bacteria on biochar: Enhanced soil remediation and bacterial community restoration

Wahla

Anwar²,

Fareed³

et al. 2023

Front. Microbiol.

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Metribuzin (MB), a triazinone herbicide is extensively sprayed for weed control in agriculture, has been reported to contaminate soil, groundwater, and surface waters. In soil, MB residues can negatively affect not only the germination of subsequent crops but also disturb soil bacterial community. The present study describes the use of biochar as a carrier material to immobilize MB-degrading bacterial consortium, for remediation of MB-contaminated soil and restoration of soil bacterial community in soil microcosms. The bacterial consortium (MB3R) comprised four bacterial strains, i.e., Rhodococcus rhodochrous AQ1, Bacillus tequilensis AQ2, Bacillus aryabhattai AQ3, and Bacillus safensis AQ4. Significantly higher MB remediation was observed in soil augmented with bacterial consortium immobilized on biochar compared to the soil augmented with un-immobilized bacterial consortium. Immobilization of MB3R on biochar resulted in higher MB degradation rate (0.017 Kd−1) and reduced half-life (40 days) compared to 0.010 Kd−1 degradation rate and 68 day half-life in treatments where un-immobilized bacterial consortium was employed. It is worth mentioning that the MB degradation products metribuzin-desamino (DA), metribuzin-diketo (DK), and metribuzin desamino-diketo (DADK) were detected in the treatments where MB3R was inoculated either alone or in combination with biochar. MB contamination significantly altered the composition of soil bacteria. However, soil bacterial community was conserved in response to augmentation with MB3R immobilized on biochar. Immobilization of the bacterial consortium MB3R on biochar can potentially be exploited for remediation of MB-contaminated soil and protecting its microbiota.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Immobilization of metribuzin-degrading bacteria on biochar: Enhanced soil remediation and bacterial community restoration

Wahla

Anwar²,

Fareed³

et al. 2023

Front. Microbiol.

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“…Laccase, lignin peroxidase, versatile peroxidase, and manganese peroxidase are enzymatic tools commonly utilized for the remediation of organic pollutants, and they are predominantly produced by basidiomycete fungi [247]. Among these fungi, Trametes species have garnered significant attention and have been successfully commercialized by various companies [245,248]. The enzymatic repertoire of Trametes versicolor, in particular, has demonstrated remarkable efficacy in degrading diverse pollutants, including pesticides [249,250], hospital waste [251], and therapeutic composites [252], among others [247].…”

Section: Bioremediationmentioning

confidence: 99%

The Role of Microbial Diversity in Lignocellulosic Biomass Degradation: A Biotechnological Perspective

Rasool,

Irfan

2024

ChemBioEng Reviews

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Lignocellulosic biomass, such as plant residues and agricultural waste, holds immense potential as a renewable resource for the production of biofuels, chemicals, and animal feed. However, the efficient degradation of lignocellulose into fermentable sugars remains a significant challenge. Recent research has highlighted the critical role of microbial diversity in lignocellulosic biomass degradation, offering new insights from a biotechnological perspective. The comprehension and utilization of microbial diversity are crucial for developing efficient biotechnological strategies for lignocellulosic biomass degradation. By uncovering the intricate relationships between microbial communities and their enzymatic machinery, researchers can optimize degradation processes, enhance biofuel production, and contribute to a more sustainable bio‐based economy. Microorganisms, including bacteria, fungi, and archaea, possess diverse enzymatic capabilities, allowing them to secrete a plethora of lignocellulolytic enzymes. Microbial organisms inhabiting extreme environments, such as the rumen, hot and cold springs, deep sea trenches, and acidic and alkaline pH environments, exhibit significant potential in generating enzymes, including hemicellulolytic and lignocellulolytic enzymes, which possess superior biochemical properties essential for industrial bioconversion applications. This review explores the ability of lignocellulosic enzymes from microbial sources to efficiently break down the lignocellulosic biomass and their potential applications in industrial biotechnology.

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“…Yeast is a common eukaryotic recipient cell for gene cloning experiments ( Chen et al, 2012 ; Ali et al, 2020 ). Actinomycetes are particularly suitable for the colonization of terrestrial ecosystems because of their mycelial growth pattern and ability to produce large amounts of extracellular enzymes ( Chen et al, 2011 ; Magan et al, 2022 ). However, there are no available reports on the ability of yeasts and actinomycetes to degrade aldrin/dieldrin.…”

Section: Degradation Of Aldrin and Dieldrinmentioning

confidence: 99%

Microbial Degradation of Aldrin and Dieldrin: Mechanisms and Biochemical Pathways

Pang

Lin

et al. 2022

Front. Microbiol.

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As members of the organochlorine group of insecticides, aldrin and dieldrin are effective at protecting agriculture from insect pests. However, because of excessive use and a long half-life, they have contributed to the major pollution of the water/soil environments. Aldrin and dieldrin have been reported to be highly toxic to humans and other non-target organisms, and so their use has gradually been banned worldwide. Various methods have been tried to remove them from the environment, including xenon lamps, combustion, ion conversion, and microbial degradation. Microbial degradation is considered the most promising treatment method because of its advantages of economy, environmental protection, and convenience. To date, a few aldrin/dieldrin-degrading microorganisms have been isolated and identified, including Pseudomonas fluorescens, Trichoderma viride, Pleurotus ostreatus, Mucor racemosus, Burkholderia sp., Cupriavidus sp., Pseudonocardia sp., and a community of anaerobic microorganisms. Many aldrin/dieldrin resistance genes have been identified from insects and microorganisms, such as Rdl, bph, HCo-LGC-38, S2-RDLA302S, CSRDL1A, CSRDL2S, HaRdl-1, and HaRdl-2. Aldrin degradation includes three pathways: the oxidation pathway, the reduction pathway, and the hydroxylation pathway, with dieldrin as a major metabolite. Degradation of dieldrin includes four pathways: oxidation, reduction, hydroxylation, and hydrolysis, with 9-hydroxydieldrin and dihydroxydieldrin as major products. Many studies have investigated the toxicity and degradation of aldrin/dieldrin. However, few reviews have focused on the microbial degradation and biochemical mechanisms of aldrin/dieldrin. In this review paper, the microbial degradation and degradation mechanisms of aldrin/dieldrin are summarized in order to provide a theoretical and practical basis for the bioremediation of aldrin/dieldrin-polluted environment.

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Bacterial and fungal bioremediation strategies

Cited by 12 publications

References 77 publications

RETRACTED: Immobilization of metribuzin-degrading bacteria on biochar: Enhanced soil remediation and bacterial community restoration

RETRACTED: Immobilization of metribuzin-degrading bacteria on biochar: Enhanced soil remediation and bacterial community restoration

The Role of Microbial Diversity in Lignocellulosic Biomass Degradation: A Biotechnological Perspective

Microbial Degradation of Aldrin and Dieldrin: Mechanisms and Biochemical Pathways

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