Quorum sensing regulation methods and their effects on biofilm in biological waste treatment systems: A review

Sun, Zhuqiu; Xi, Jinying; Yang, Chunping; Cong, Wen-jie

doi:10.1007/s11783-021-1495-2

Cited by 39 publications

(17 citation statements)

References 111 publications

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“…All QS signaling molecules have different effects, and thus, QS-based regulation methods are categorized into two groups: QS enrichment methods and QS inhibition methods [ 117 ].…”

Section: Qs-mediated Biofilm Regulation Methods In Wastewater Treatme...mentioning

confidence: 99%

“…These methods simply help to increase the content of QS signaling molecules in the biofilms and thus help smoothen the overall operation of biological wastewater treatment systems [ 117 ]. There are three ways to enhance QS in WWTs: (i) addition of exogenous QS signaling molecules, (ii) increased synthesis of QS signaling molecules through addition of accelerators, and (iii) QS bacteria cultivation.…”

Section: Qs-mediated Biofilm Regulation Methods In Wastewater Treatme...mentioning

confidence: 99%

“…These methods aim to lower the concentration of QS signaling molecules. They either degrade QS signaling molecules, interfere with their functions, or inhibit their synthesis in biological treatment systems ( Figure 4 ) [ 117 ]. QS inhibition can be achieved in four ways: (i) QS inhibitor addition, (ii) QQ bacteria cultivation, (iii) reactive oxygen species-based QS signaling molecules degradation, iv) enzyme-based QS signaling molecules degradation.…”

Section: Qs-mediated Biofilm Regulation Methods In Wastewater Treatme...mentioning

confidence: 99%

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Exploring the Function of Quorum Sensing Regulated Biofilms in Biological Wastewater Treatment: A Review

Sahreen

Mukhtar

Imre

et al. 2022

IJMS

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Quorum sensing (QS), a type of bacterial cell–cell communication, produces autoinducers which help in biofilm formation in response to cell population density. In this review, biofilm formation, the role of QS in biofilm formation and development with reference to biological wastewater treatment are discussed. Autoinducers, for example, acyl-homoserine lactones (AHLs), auto-inducing oligo-peptides (AIPs) and autoinducer 2, present in both Gram-negative and Gram-positive bacteria, with their mechanism, are also explained. Over the years, wastewater treatment (WWT) by QS-regulated biofilms and their optimization for WWT have gained much attention. This article gives a comprehensive review of QS regulation methods, QS enrichment methods and QS inhibition methods in biological waste treatment systems. Typical QS enrichment methods comprise adding QS molecules, adding QS accelerants and cultivating QS bacteria, while typical QS inhibition methods consist of additions of quorum quenching (QQ) bacteria, QS-degrading enzymes, QS-degrading oxidants, and QS inhibitors. Potential applications of QS regulated biofilms for WWT have also been summarized. At last, the knowledge gaps present in current researches are analyzed, and future study requirements are proposed.

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“…All QS signaling molecules have different effects, and thus, QS-based regulation methods are categorized into two groups: QS enrichment methods and QS inhibition methods [ 117 ].…”

Section: Qs-mediated Biofilm Regulation Methods In Wastewater Treatme...mentioning

confidence: 99%

Section: Qs-mediated Biofilm Regulation Methods In Wastewater Treatme...mentioning

confidence: 99%

Section: Qs-mediated Biofilm Regulation Methods In Wastewater Treatme...mentioning

confidence: 99%

See 1 more Smart Citation

Exploring the Function of Quorum Sensing Regulated Biofilms in Biological Wastewater Treatment: A Review

Sahreen

Mukhtar

Imre

et al. 2022

IJMS

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“…During this intermediate phase, there is faster growth in the evolution of the biofilm of Gram-positive bacteria compared to Gram-negative species. Interspecies communication, now mediated by the quorum-sensing (QS) system, will facilitate biofilm differentiation, influencing bacterial metabolism and leading to extracellular polysaccharide matrix formation (EPS) and community maturation [ 28 , 29 , 31 ].…”

Section: From Homeostatic To Dysbiotic Supragingival Biofilmmentioning

confidence: 99%

Strategies to Combat Caries by Maintaining the Integrity of Biofilm and Homeostasis during the Rapid Phase of Supragingival Plaque Formation

et al. 2022

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Bacteria in the oral cavity, including commensals and opportunistic pathogens, are organized into highly specialized sessile communities, coexisting in homeostasis with the host under healthy conditions. A dysbiotic environment during biofilm evolution, however, allows opportunistic pathogens to become the dominant species at caries-affected sites at the expense of health-associated taxa. Combining tooth brushing with dentifrices or rinses combat the onset of caries by partially removes plaque, but resulting in the biofilm remaining in an immature state with undesirables’ consequences on homeostasis and oral ecosystem. This leads to the need for therapeutic pathways that focus on preserving balance in the oral microbiota and applying strategies to combat caries by maintaining biofilm integrity and homeostasis during the rapid phase of supragingival plaque formation. Adhesion, nutrition, and communication are fundamental in this phase in which the bacteria that have survived these adverse conditions rebuild and reorganize the biofilm, and are considered targets for designing preventive strategies to guide the biofilm towards a composition compatible with health. The present review summarizes the most important advances and future prospects for therapies based on the maintenance of biofilm integrity and homeostasis as a preventive measure of dysbiosis focused on these three key factors during the rapid phase of plaque formation.

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“…The issues of creating easily reproducible artificial consortia based on the use of well-studied cell strains with stable, safe, and efficient functioning, in case of their application in practice for the sustainable development of ecological systems, are of great scientific and practical importance since they are components of the rational use of biological resources and actively developing synthetic biology [ 7 , 8 ]. The rational selection of microbial candidates and the experimental confirmation of the choice are often the drivers of such a process [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

“Unity and Struggle of Opposites” as a Basis for the Functioning of Synthetic Bacterial Immobilized Consortium That Continuously Degrades Organophosphorus Pesticides

et al. 2022

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This work was aimed at the development of an immobilized artificial consortium (IMAC) based on microorganisms belonging to the Gram-positive and Gram-negative bacterial cells capable of jointly carrying out the rapid and effective degradation of different organophosphorus pesticides (OPPs): paraoxon, parathion, methyl parathion, diazinon, chlorpyrifos, malathion, dimethoate, and demeton-S-methyl. A cryogel of poly(vinyl alcohol) was applied as a carrier for the IMAC. After a selection was made between several candidates of the genera Rhodococcus and Pseudomonas, the required combination of two cultures (P. esterophilus and R. ruber) was found. A further change in the ratio between the biomass of the cells inside the granules of IMAC, increasing the packing density of cells inside the same granules and decreasing the size of the granules with IMAC, gave a 225% improvement in the degradation activity of the cell combination. The increase in the velocity and the OPP degradation degree was 4.5 and 16 times greater than the individual P. esterophilus and R. ruber cells, respectively. Multiple uses of the obtained IMAC were demonstrated. The increase in IMAC lactonase activity confirmed the role of the cell quorum in the action efficiency of the synthetic biosystem. The co-inclusion of natural strains in a carrier during immobilization strengthened the IMAC activities without the genetic enhancement of the cells.

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Quorum sensing regulation methods and their effects on biofilm in biological waste treatment systems: A review

Cited by 39 publications

References 111 publications

Exploring the Function of Quorum Sensing Regulated Biofilms in Biological Wastewater Treatment: A Review

Exploring the Function of Quorum Sensing Regulated Biofilms in Biological Wastewater Treatment: A Review

Strategies to Combat Caries by Maintaining the Integrity of Biofilm and Homeostasis during the Rapid Phase of Supragingival Plaque Formation

“Unity and Struggle of Opposites” as a Basis for the Functioning of Synthetic Bacterial Immobilized Consortium That Continuously Degrades Organophosphorus Pesticides

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