Biosurfactants and chemotaxis interplay in microbial consortium-based hydrocarbons degradation

Ibrar, Muhammad; Khan, Salman; Hasan, Fariha; Yang, Xiao

doi:10.1007/s11356-022-18492-9

Cited by 9 publications

(5 citation statements)

References 150 publications

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“…As alkanes are possible carbon sources for microbes, some bacteria can perform chemotaxis by moving to the alkane-rich regions, − which can greatly increase bacterial adhesion at the oil–water interface. P.…”

Section: Resultsmentioning

confidence: 99%

Factors Influencing Pseudomonas aeruginosa Initial Adhesion and Evolution at the Dodecane–Water Interface

Zhang,

Zong

et al. 2023

Langmuir

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Bacterial adhesion and evolution at the oil–water interface are important for a broad range of applications such as food manufacturing and microbial-enhanced oil recovery, etc. However, our understanding on bacterial interfacial adhesion and evolution, particularly at the single-cell level, is still far from complete. In this work, by employing Pseudomonas aeruginosa PAO1 at the dodecane–water interface as a model system, we have studied the effects of different factors on bacterial interfacial adhesion and the dynamic evolution of bacterial interfacial behavior at the single-cell level. The results show that PAO1 cells displayed a chemotactic behavior toward dodecane. Among the tested factors, bacterial initial interfacial attachment showed a negative correlation with the secreted cell-surface associated lipopolysaccharide and Psl while a positive correlation with type IV pili. Adding nonbiological surfactant Pluronic F-127, as expected, greatly reduced the cell interfacial adhesion. More importantly, the dynamics analysis of cell attachment/detachment at the dodecane–water interface over a long-time scale revealed a reversible to irreversible attachment transition of cells. This transition is accompanied with the interface aging resulting from bacterial activities, which led to an increase of the interfacial viscoelasticity with time and finally the formation of the gel-like interface. Further analysis demonstrated the important role of exopolysaccharides in the latter process. Our findings provide more details of bacterial oil–water interfacial behavior at the single-cell level and may shed light on developing new strategies for controlling bacterial colonization at the oil–water interface.

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Section: Resultsmentioning

confidence: 99%

Factors Influencing Pseudomonas aeruginosa Initial Adhesion and Evolution at the Dodecane–Water Interface

Zhang,

Zong

et al. 2023

Langmuir

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“…This is due to their unique metabolism (especially in the case of extremophilic microorganisms), their ability to use environmental contaminants as a source of nutrients and energy, and their small contact surface compared to plants and macroalgae (Jia et al 2016 ; Cao et al 2022 ; Wu et al 2023 ). In this context, most of the successful research reported up to date has been conducted with microbial consortia to treat polluted soils aiming for the removal, bio-adsorption, or carbonated precipitation of organic and inorganic pollutants (Bhatt et al 2021 ; Zheng et al 2021 ; Ibrar et al 2022 ; Zhang and Zhang 2022 ). The conclusion that can be obtained from all these works is that microbial-based technologies are sustainable interventions for greener ecosystem recovery, especially when aiming at the removal of compounds like hydrocarbons, xenobiotics, and other environmental pollutants induced by anthropogenic stressors.…”

Section: Microorganisms For Bioremediationmentioning

confidence: 99%

Halophilic archaea as tools for bioremediation technologies

Martínez-Espinosa

2024

Appl Microbiol Biotechnol

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Haloarchaea are extremophilic microorganisms belonging to the Archaea domain that require high salt concentrations to be alive, thus inhabiting ecosystems like salty ponds, salty marshes, or extremely salty lagoons. They are more abundantly and widely distributed worldwide than initially expected. Most of them are grouped into two families: Halobacteriaceae and Haloferacaceae. The extreme conditions under which haloarchaea survive contribute to their metabolic and molecular adaptations, thus making them good candidates for the design of bioremediation strategies to treat brines, salty water, and saline soils contaminated with toxic compounds such as nitrate, nitrite, oxychlorates such as perchlorate and chlorate, heavy metals, hydrocarbons, and aromatic compounds. New advances in understanding haloarchaea physiology, metabolism, biochemistry, and molecular biology suggest that biochemical pathways related to nitrogen and carbon, metals, hydrocarbons, or aromatic compounds can be used for bioremediation proposals. This review analyses the novelty of the most recent results showing the capability of some haloarchaeal species to assimilate, modify, or degrade toxic compounds for most living beings. Several examples of the role of these microorganisms in the treatment of polluted brine or salty soils are also discussed in connection with circular economy-based processes. Key points • Haloarchaea are extremophilic microorganisms showing genuine metabolism • Haloarchaea can metabolise compounds that are highly toxic to most living beings • These metabolic capabilities are useful for designing soil and water bioremediation strategies

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“…These factors influence which microbial species thrive and which degradation pathways are favored, making them critical considerations in realworld bioremediation applications. Other factors contributing to variability include the persistence and recalcitrance of certain hydrocarbon compounds, substrate preferences of microbial communities, temporal dynamics, and biodegradation limitations due to toxicity or chemical stability [64]. Recognizing and accommodating this variability is crucial for designing effective bioremediation strategies tailored to the specific contaminants present, the environmental conditions, and the potential for microbial adaptation.…”

Section: Variability In Hydrocarbon Properties: Implications For Bior...mentioning

confidence: 99%

Advancing Eco-Sustainable Bioremediation for Hydrocarbon Contaminants: Challenges and Solutions

Alaidaroos

2023

Processes

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In an era of rising population density and industrialization, the environment confronts growing challenges. Soil, agricultural land, and water bodies are becoming increasingly polluted by petroleum waste and hydrocarbons. While hydrocarbons are naturally present in crude oil, refining processes compound the complexity and toxicity of hydrocarbons. This is particularly evident in polycyclic aromatic hydrocarbons (PAHs) found in the air and soil, known for their carcinogenic, mutagenic, and teratogenic properties. In response, biodegradation emerges as an eco-friendly, cost-effective solution, especially in petroleum-contaminated settings. Biodiverse microbial communities play a pivotal role in managing hydrocarbon contamination, contingent on location, toxicity, and microbial activity. To optimize biodegradation, understanding its mechanisms is essential. This review delves into varied bioremediation techniques, degradation pathways, and the contributions of microbial activities to efficiently removing hydrocarbon pollutants. Recent research spotlights specific microorganisms like bacteria, microalgae, and fungi adept at hydrocarbon degradation, offering a contemporary perspective on petroleum hydrocarbon pollutant bioremediation. These microorganisms efficiently break down petroleum hydrocarbons, with enzymatic catalysis markedly accelerating pollutant breakdown compared to conventional methods. Given the intricate nature of hydrocarbon contamination, cooperative bacterial consortia are instrumental in effective cleanup, driven by specific genes guiding bacterial metabolism. For cost-effective and efficient removal from compromised environments, it is advisable to adopt an integrated approach that combines biostimulation and bioaugmentation.

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Biosurfactants and chemotaxis interplay in microbial consortium-based hydrocarbons degradation

Cited by 9 publications

References 150 publications

Factors Influencing Pseudomonas aeruginosa Initial Adhesion and Evolution at the Dodecane–Water Interface

Factors Influencing Pseudomonas aeruginosa Initial Adhesion and Evolution at the Dodecane–Water Interface

Halophilic archaea as tools for bioremediation technologies

Advancing Eco-Sustainable Bioremediation for Hydrocarbon Contaminants: Challenges and Solutions

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