Identification and characterization of a novel N -acyl-homoserine lactonase gene in Sphingomonas ursincola isolated from industrial cooling water systems

Morohoshi, Toshio; Sato, Niina; Iizumi, Taro; Tanaka, Airi; Ikeda, Tsukasa

doi:10.1016/j.jbiosc.2016.12.010

Cited by 10 publications

(3 citation statements)

References 42 publications

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“…Actinobacteria have the ability to produce diverse antibiotics [48], potentially allowing members of this phylum to take part in protecting plants from pathogenic bacteria. Our results showed that Sphingomonas (Alphaproteobacteria) was the module hub in the P. australis zones network, which could be correlated with signaling molecule regulation (e.g., quorum sensing) [49]. Previous studies showed that microorganisms can use quorum sensing (QS) to control competitive and cooperative behaviors in the plant rhizosphere [18,[50][51][52].…”

Section: Co-occurrence Network Structures In the Riparian Zone Of Lakmentioning

confidence: 72%

Aquatic Macrophytes and Local Factors Drive Bacterial Community Distribution and Interactions in a Riparian Zone of Lake Taihu

Lyu

Huang

Zeng

et al. 2020

Water

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Aquatic macrophytes rhizosphere are biogeochemical cycling hotspots in freshwater ecosystems. However, little is known regarding the effect of aquatic macrophytes on bacterial community and interactions in the riparian zones. We investigated the bacterial community composition and network structures along a gradient of the riparian zone as follows: The supralittoral and eulittoral zones with Phragmites australis, the eulittoral and infralittoral zones without P. australi. The bacterial communities in the four zones differed significantly based on taxonomic dissimilarity, but the two zones with P. australis exhibited phylogenetic closeness of the bacterial communities. The characteristics of the bacterial networks, such as connectivity, modularity, and topological roles of OTUs, were totally different between the P. australis and non-P. australis zones. Some bacterial phyla enriched in the P. australis zones were found to be putative keystone taxa in the networks, which might be involved in the regulation of bacterial interactions and plant growth. Moreover, the hydrological regime and particle size were shown to be determinants of the bacterial community and network structures in the riparian zones. In summary, our results show that the role of P. australis and local factors are crucial for constructing bacterial community and interactions in the riparian zones of lakes.

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Section: Co-occurrence Network Structures In the Riparian Zone Of Lakmentioning

confidence: 72%

Aquatic Macrophytes and Local Factors Drive Bacterial Community Distribution and Interactions in a Riparian Zone of Lake Taihu

Lyu

Huang

Zeng

et al. 2020

Water

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“…1 ). As reported in the literature, these species had previously been identified in biofilms of drinking water samples (Kalmbach et al ., 1999 ; Busse et al ., 2003 ; Morohoshi et al ., 2017 ). Moreover, unclassified members of 13 additional bacterial genera were identified with relative abundances ranging from 10% to 39%, highlighting the marked presence of as yet to be isolated and characterized bacterial species (Fig.…”

Section: Resultsmentioning

confidence: 99%

Tap water as a natural vehicle for microorganisms shaping the human gut microbiome

Lugli

Mancabelli

Alessandri

et al. 2022

Environmental Microbiology

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Fresh potable water is an indispensable drink which humans consume daily in substantial amounts. Nonetheless, very little is known about the composition of the microbial community inhabiting drinking water or its impact on our gut microbiota. In the current study, an exhaustive shotgun metagenomics analysis of the tap water microbiome highlighted the occurrence of a highly genetic biodiversity of the microbial communities residing in fresh water and the existence of a conserved core tap water microbiota largely represented by novel microbial species, representing microbial dark matter. Furthermore, genome reconstruction of this microbial dark matter from water samples unveiled homologous sequences present in the faecal microbiome of humans from various geographical locations. Accordingly, investigation of the faecal microbiota content of a subject that daily consumed tap water for 3 years provides proof for horizontal transmission and colonization of water bacteria in the human gut.

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“…Shortly after the discovery of the first QQ lactonase AiiA, a strain of Variovorax paradoxus was isolated, which hydrolyses the AHLs into homoserine lactone and corresponding fatty acids, utilizing them as nitrogen source and energy source ( Fan et al., 2017 ). Except that a minority of acylases belong to the α/β-hydrolase family ( Fan et al., 2017 ), most QQ acylases can be categorized into the N-terminal nucleophile (Ntn) hydrolase superfamily ( Fan et al., 2017 ; Liu et al, 2017 ; Morohoshi et al, 2017 ), which can be divided into three groups: The aculeacin A family, penicillin G acylase family, and amidase family ( Yu et al., 2018 ). Some characterized AHL acylases categorized by protein families are listed in Table 1 .…”

Section: Quorum Quenching Strategymentioning

confidence: 99%

Innovative microbial disease biocontrol strategies mediated by quorum quenching and their multifaceted applications: A review

et al. 2023

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With the increasing resistance exhibited by undesirable bacteria to traditional antibiotics, the need to discover alternative (or, at least, supplementary) treatments to combat chemically resistant bacteria is becoming urgent. Quorum sensing (QS) refers to a novel bacterial communication system for monitoring cell density and regulation of a network of gene expression that is mediated by a group of signaling molecules called autoinducers (AIs). QS-regulated multicellular behaviors include biofilm formation, horizontal gene transfer, and antibiotic synthesis, which are demonstrating increasing pathogenicity to plants and aquacultural animals as well as contamination of wastewater treatment devices. To inhibit QS-regulated microbial behaviors, the strategy of quorum quenching (QQ) has been developed. Different quorum quenchers interfere with QS through different mechanisms, such as competitively inhibiting AI perception (e.g., by QS inhibitors) and AI degradation (e.g., by QQ enzymes). In this review, we first introduce different signaling molecules, including diffusible signal factor (DSF) and acyl homoserine lactones (AHLs) for Gram-negative bacteria, AIPs for Gram-positive bacteria, and AI-2 for interspecies communication, thus demonstrating the mode of action of the QS system. We next exemplify the QQ mechanisms of various quorum quenchers, such as chemical QS inhibitors, and the physical/enzymatic degradation of QS signals. We devote special attention to AHL-degrading enzymes, which are categorized in detail according to their diverse catalytic mechanisms and enzymatic properties. In the final part, the applications and advantages of quorum quenchers (especially QQ enzymes and bacteria) are summarized in the context of agricultural/aquacultural pathogen biocontrol, membrane bioreactors for wastewater treatment, and the attenuation of human pathogenic bacteria. Taken together, we present the state-of-the-art in research considering QS and QQ, providing theoretical evidence and support for wider application of this promising environmentally friendly biocontrol strategy.

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Identification and characterization of a novel N -acyl-homoserine lactonase gene in Sphingomonas ursincola isolated from industrial cooling water systems

Cited by 10 publications

References 42 publications

Aquatic Macrophytes and Local Factors Drive Bacterial Community Distribution and Interactions in a Riparian Zone of Lake Taihu

Aquatic Macrophytes and Local Factors Drive Bacterial Community Distribution and Interactions in a Riparian Zone of Lake Taihu

Tap water as a natural vehicle for microorganisms shaping the human gut microbiome

Innovative microbial disease biocontrol strategies mediated by quorum quenching and their multifaceted applications: A review

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