Comparative Analysis of
            <i>Salmonella enterica</i>
            Serovar Typhimurium Biofilm Formation on Gallstones and on Glass

Prouty, Angela M.; Gunn, John S.

doi:10.1128/iai.71.12.7154-7158.2003

Cited by 148 publications

(146 citation statements)

References 35 publications

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“…LPS-defective mutants of Salmonella enterica and Pseudomonas fluorescens have been shown to differ from their parental strains in their ability to adhere to inert surfaces (Williams & Fletcher, 1996;Prouty & Gunn, 2003). Here, while the noeJ mutant was able to adhere to and form biofilm on glass similarly to the wild-type, the noeL mutant was defective in its biofilm formation ability on glass.…”

Section: Discussionmentioning

confidence: 99%

The Azospirillum brasilense Sp7 noeJ and noeL genes are involved in extracellular polysaccharide biosynthesis

et al. 2009

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The Azospirillum brasilense Sp7 noeJ and noeL genes are involved in extracellular polysaccharide biosynthesis Azospirillum brasilense is a plant root-colonizing bacterium that exerts beneficial effects on the growth of many agricultural crops. Extracellular polysaccharides of the bacterium play an important role in its interactions with plant roots. The pRhico plasmid of A. brasilense Sp7, also named p90, carries several genes involved in synthesis and export of cell surface polysaccharides. We generated two Sp7 mutants impaired in two pRhico-located genes, noeJ and noeL, encoding mannose-6-phosphate isomerase and GDP-mannose 4,6-dehydratase, respectively. Our results demonstrate that in A. brasilense Sp7, noeJ and noeL are involved in lipopolysaccharide and exopolysaccharide synthesis. noeJ and noeL mutant strains were significantly altered in their outer membrane and cytoplasmic/periplasmic protein profiles relative to the wild-type strain. Moreover, both noeJ and noeL mutations significantly affected the bacterial responses to several stresses and antimicrobial compounds. Disruption of noeL, but not noeJ, affected the ability of the A. brasilense Sp7 to form biofilms. The pleiotropic alterations observed in the mutants could be due, at least partially, to their altered lipopolysaccharides and exopolysaccharides relative to the wild-type.

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Section: Discussionmentioning

confidence: 99%

The Azospirillum brasilense Sp7 noeJ and noeL genes are involved in extracellular polysaccharide biosynthesis

et al. 2009

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“…Besides the many bacterial factors that have been implicated, the biophysical properties of the substrate and surrounding medium can also greatly influence bacterial biofilm formation (Heydorn et al 2000;Prouty and Gunn 2003). For example, C. elegans mutants with an altered surface cuticle do not accumulate Yersinia biofilm (Höflich et al 2004;Joshua et al 2003).…”

Section: Environmental Factorsmentioning

confidence: 99%

Yersinia pestis Biofilm in the Flea Vector and Its Role in the Transmission of Plague

Hinnebusch¹,

Erickson²

2008

Current Topics in Microbiology and Immunology

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Transmission by fleabite is a relatively recent evolutionary adaptation of Yersinia pestis, the bacterial agent of bubonic plague. To produce a transmissible infection, Y. pestis grows as an attached biofilm in the foregut of the flea vector. Biofilm formation both in the flea foregut and in vitro is dependent on an extracellular matrix (ECM) synthesized by the Yersinia hms gene products. The hms genes are similar to the pga and ica genes of Escherichia coli and Staphylococcus epidermidis, respectively, that act to synthesize a poly-β-1,6-N-acetyl-dglucosamine ECM required for biofilm formation. As with extracellular polysaccharide production in many other bacteria, synthesis of the Hms-dependent ECM is controlled by intracellular levels of cyclic-di-GMP. Yersinia pseudotuberculosis, the food-and water-borne enteric pathogen from which Y. pestis evolved recently, possesses identical hms genes and can form biofilm in vitro but not in the flea. The genetic changes in Y. pestis that resulted in adapting biofilm-forming capability to the flea gut environment, a critical step in the evolution of vector-borne transmission, have yet to be identified. During a flea bite, Y. pestis is regurgitated into the dermis in a unique biofilm phenotype, and this has implications for the initial interaction with the mammalian innate immune response.

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“…In a number of experimental studies, the ability of Salmonella to form BF on a variety of materials such as concrete, glass (Prouty and Gunn, 2003), cement (Joseph et al, 2001), stainless steel (Oliveira et al, 2007), plastic (Stepanović et al, 2004;Solomon et al, 2005), granite and rubber (Arnold and Yates, 2009) was confirmed (Solano et al, 2002;Steenackers et al, 2012). Salmonella spp.…”

Section: B I O F I L M F O R M I N G C a Pa C I T Y O F Salmonella Spmentioning

confidence: 99%

Salmonella spp. in poultry: a constant challenge and new insights

Velhner

Milanov

Kozoderović

2018

J Hellenic Vet Med Soc

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ABSTRACT. The knowledge about virulence mechanisms, resistance to antimicrobial agents and the biofilm formation ability of Salmonella spp. in poultry industry has been expanded over the years. However, in spite of the research efforts and significant investments to improve management systems in poultry industry, it has become evident that none of the methods applied in all stages of food production chain are 100% effective in eliminating Salmonella spp. Different serovars are manifesting different mechanisms of invasiveness which depend on their ability to invade lower zones of the lamina propria, their ability to gain accesses to parenchymatous organs and survive in macrophages. The ubiquitous nature of Salmonella spp. due to their adaptation to animal and plant hosts, as well as their survival in hostile environments and their enhanced capacity to produce biofilms, contribute to a long lasting contamination of the environment, feed and animals. The emergency and spread of antimicrobial resistances in Salmonella spp. raise additional concerns.

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Comparative Analysis of Salmonella enterica Serovar Typhimurium Biofilm Formation on Gallstones and on Glass

Cited by 148 publications

References 35 publications

The Azospirillum brasilense Sp7 noeJ and noeL genes are involved in extracellular polysaccharide biosynthesis

The Azospirillum brasilense Sp7 noeJ and noeL genes are involved in extracellular polysaccharide biosynthesis

Yersinia pestis Biofilm in the Flea Vector and Its Role in the Transmission of Plague

Salmonella spp. in poultry: a constant challenge and new insights

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