Inducers and autoinducers on Salmonella enterica serovar Typhimurium motility, growth and gene expression

Conceição, Rita de Cássia dos Santos da; Sturbelle, R.T.; Timm, Cláudio Dias

doi:10.1590/0103-8478cr20150295

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…Our results were comparable to Thung et al [ 55 ], who detected the Stn gene in 50% of S. typhimurium isolates recovered from beef samples [ 55 ]. Furthermore, the SdiA gene is involved in epithelial cell adhesion and biofilm development via quorum sensing [ 56 , 57 , 58 , 59 ]. The results obtained are consistent with Yin et al [ 60 ], who detected the SdiA gene in >75% of biofilm-producing S. typhimurium isolates.…”

Section: Discussionmentioning

confidence: 99%

Anti-Biofilms’ Activity of Garlic and Thyme Essential Oils against Salmonella typhimurium

et al. 2022

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Biofilm control by essential oil (EO) application has recently increased to preclude biofilm production on foods and environmental surfaces. In this work, the anti-biofilm effects of garlic and thyme essential oils using the minimum inhibitory concentration (MIC) method against Salmonella typhimurium recovered from different abattoir samples were investigated along with the virulence genes (InvA, SdiA and Stn genes), and the antimicrobial susceptibility profile of S. typhimurium as well. The obtained results revealed that S. typhimurium contaminated abattoir samples to varying degrees. The InvA gene was investigated in all isolates, whereas the SdiA and Stn genes were observed in four and three isolates, respectively. Utilizing the disc diffusion method, S. typhimurium isolates demonstrated substantial resistance to most of the examined antibiotics with a high multiple antibiotic resistance index. S. typhimurium isolates demonstrated biofilm formation abilities to various degrees at varied temperatures levels (4 °C and 37 °C). In conclusion, the obtained samples from the research area are regarded as a potential S. typhimurium contamination source. Furthermore, garlic essential oil (GEO) has more potential to inhibit S. typhimurium biofilm at different sub-minimum inhibitory concentrations as compared to thyme essential oil (TEO). Therefore, these EOs are considered as potential natural antibacterial options that could be applied in food industry.

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Section: Discussionmentioning

confidence: 99%

Anti-Biofilms’ Activity of Garlic and Thyme Essential Oils against Salmonella typhimurium

et al. 2022

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“…It has been reported that epinephrine plays an important role in stimulating motility in S. Typhimurium, so it seems that it is playing a key role in the mechanism of Quorum Sensing. This would trigger the activation of genes related to motility such as fliC owing to the fact that the presence of this neurotransmitter increases its expression 21 times (Conceição et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Identification of fliC and flagella expression in Salmonella enterica subspecies enterica serovar Gallinarum biovar gallinarum

CortÃ©s¹,

Vega-Manriquez²,

Verdugo-RodrÃguez³

2019

Afr. J. Microbiol. Res.

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Salmonella enterica subsp. enterica ser. Gallinarum biovar. gallinarum (S. gallinarum) is the causative agent of fowl Typhoid, a bacterial disease that affects domestic and wild birds. For many years, S. gallinarum was defined as an aflagellated bacterium, that is, non-motile. However, the closely related strain Salmonella pullorum is capable of expressing a flagellum-like filament. Since these bacteria are practically identical, it w as determined if S. gallinarum expresses flagellum-like filament under different culture conditions in order to increase the basic knowledge of this bacterium. The motility of S. gallinarum was evaluated in different culture media (GI, S and nutrient media), and visualized the bacterial filaments using electron microscopy. fliC was identified in some of the studied strains; subsequently, sequencing analysis of fliC gene shown 98% of identity with that in S. Typhimurium. In the present study, the presence of a flagellum-like structure was demonstrate in different strains of S. gallinarum using electron microscopy. In addition, the fliC gene was amplified, which allowed us to suggest that this bacterium is capable to shows a flagellum under certain culture conditions, similar to that reported for S. pullorum.

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Association of quorum sensing and biofilm formation with Salmonella virulence: story beyond gathering and cross-talk

et al. 2021

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Inducers and autoinducers on Salmonella enterica serovar Typhimurium motility, growth and gene expression

Abstract: Genus Salmonella bacteria are among the major pathogenic microorganisms in food. This bacterium pathogenicity is related to a number of virulence factors, among which its flagella.

Cited by 5 publications

References 13 publications

Anti-Biofilms’ Activity of Garlic and Thyme Essential Oils against Salmonella typhimurium

Anti-Biofilms’ Activity of Garlic and Thyme Essential Oils against Salmonella typhimurium

Identification of fliC and flagella expression in Salmonella enterica subspecies enterica serovar Gallinarum biovar gallinarum

Association of quorum sensing and biofilm formation with Salmonella virulence: story beyond gathering and cross-talk

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