Adhesion mediated transport of bacterial pathogens in saturated sands coated by phyllosilicates and Al-oxides

Hong, Zhineng; Jiang, Jun; Li, Jiu-yu; Xu, Ren-kou; Jing, Yan

doi:10.1016/j.colsurfb.2019.05.044

Cited by 5 publications

(2 citation statements)

References 39 publications

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“…Prior studies have reported that there are several key properties and parameters of bacteria influencing bacterial adhesion to a surface, each to varying degrees. These include the hydrophobicity of the bacterial wall, surface potential of the bacteria, bacterial size, − bacterial shape, − the presence of curli and pili, − quorum sensing ability, , and the ability to produce extracellular bacterial adhesins . In addition, the characteristics of the substrate surface such as hydrophobicity, − surface potential and charge, heterogeneity, , patterns, ,, roughness, − and stiffness have been demonstrated to also be important.…”

Section: Introductionmentioning

confidence: 99%

Influence of Surface Roughness, Nanostructure, and Wetting on Bacterial Adhesion

Liu

DeFlorio

et al. 2023

Langmuir

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Bacterial fouling is a persistent problem causing the deterioration and failure of functional surfaces for industrial equipment/components; numerous human, animal, and plant infections/diseases; and energy waste due to the inefficiencies at internal and external geometries of transport systems. This work gains new insights into the effect of surface roughness on bacterial fouling by systematically studying bacterial adhesion on model hydrophobic (methyl-terminated) surfaces with roughness scales spanning from ∼2 nm to ∼390 nm. Additionally, a surface energy integration framework is developed to elucidate the role of surface roughness on the energetics of bacteria and substrate interactions. For a given bacteria type and surface chemistry; the extent of bacterial fouling was found to demonstrate up to a 75-fold variation with surface roughness. For the cases showing hydrophobic wetting behavior, both increased effective surface area with increasing roughness and decreased activation energy with increased surface roughness was concluded to enhance the extent of bacterial adhesion. For the cases of superhydrophobic surfaces, the combination of factors including (i) the surpassing of Laplace pressure force of interstitial air over bacterial adhesive force, (ii) the reduced effective substrate area for bacteria wall due to air gaps to have direct/solid contact, and (iii) the reduction of attractive van der Waals force that holds adhering bacteria on the substrate were summarized to weaken the bacterial adhesion. Overall, this study is significant in the context of designing antifouling coatings and systems as well as explaining variations in bacterial contamination and biofilm formation processes on functional surfaces.

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Section: Introductionmentioning

confidence: 99%

Influence of Surface Roughness, Nanostructure, and Wetting on Bacterial Adhesion

Liu

DeFlorio

et al. 2023

Langmuir

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“…Bacteria in the soil matrix proliferate in both sessile and planktonic states. In the environment, the sessile state is the dominant lifestyle of microorganisms, providing physical, chemical, and biological protection to the microorganisms [7][8][9]. Therefore, understanding the attachment process and physiological features of surfaceattached E. coli O157:H7 in the soil environment is key to assessing the potential risks of this bacterium to public health [10].…”

Section: Introductionmentioning

confidence: 99%

The attachment process and physiological properties of Escherichia coli O157:H7 on quartz

Wang

Cai

et al. 2020

BMC Microbiol

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Background Manure application and sewage irrigation release many intestinal pathogens into the soil. After being introduced into the soil matrix, pathogens are commonly found to attach to soil minerals. Although the survival of mineral-associated Escherichia coli O157:H7 has been studied, a comprehensive understanding of the attachment process and physiological properties after attachment is still lacking. Results In this study, planktonic and attached Escherichia coli O157:H7 cells on quartz were investigated using RNA sequencing (RNA-seq) and the isobaric tagging for relative and absolute quantitation (iTRAQ) proteomic method. Based on the transcriptomic and proteomic analyses and gene knockouts, functional two-component system pathways were required for efficient attachment; chemotaxis and the Rcs system were identified to play determinant roles in E. coli O157:H7 attachment on quartz. After attachment, the pyruvate catabolic pathway shifted from the tricarboxylic acid (TCA) cycle toward the fermentative route. The survival rate of attached E. coli O157:H7 increased more than 10-fold under penicillin and vancomycin stress and doubled under alkaline pH and ferric iron stress. Conclusions These results contribute to the understanding of the roles of chemotaxis and the Rcs system in the attachment process of pathogens and indicate that the attachment of pathogens to minerals significantly elevates their resistance to antibiotics and environmental stress, which may pose a potential threat to public health.

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Environmental ecology and health risk assessment of pathogens in the environment

Su,

Huang,

Dai

et al. 2024

Water Security: Big Data-Driven Risk Identification, Assessment and Control of Emerging Contaminants

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Adhesion mediated transport of bacterial pathogens in saturated sands coated by phyllosilicates and Al-oxides

Cited by 5 publications

References 39 publications

Influence of Surface Roughness, Nanostructure, and Wetting on Bacterial Adhesion

Influence of Surface Roughness, Nanostructure, and Wetting on Bacterial Adhesion

The attachment process and physiological properties of Escherichia coli O157:H7 on quartz

Environmental ecology and health risk assessment of pathogens in the environment

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