Listeria monocytogenes responds to cell density as it transitions to the long-term-survival phase

Wen, Jia; Karthikeyan, Sneha; Hawkins, Jabari; Anantheswaran, Ramaswamy C.; Knabel, Stephen J.

doi:10.1016/j.ijfoodmicro.2013.05.014

Cited by 9 publications

(10 citation statements)

References 28 publications

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“…Previous studies have demonstrated that after a short and rapid decline in the death phase, the culture maintains a stable density for an extended period of time (long term survival phase) (3, 4, 23). Exhibiting a different growth curve, in this study, the stationary phase (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…In non-favorable growth conditions and environments, living cells utilize cryptic growth, which is the recycling of nutrients from dead cells for maintenance. In comparison to active and growing cells, cells transition from a rod shape to an efficient and smaller coccoid shape aiding in long term survival (3, 4, 25). During that transition, S. Typhimurium may use quorum sensing (QS) when responding to their own population density (26).…”

Section: Discussionmentioning

confidence: 99%

“…The coccoid shape increased its survivability and resistance to treatments. J. Wen et al (4) also found that initial viable cell density (~10 6 to ~10 10 cfu/mL) and pH (5.36 – 6.85) of L. monocytogenes affected the transition to the LTS phase.…”

Section: Introductionmentioning

confidence: 95%

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The Effect of Previous Life Cycle Phase on the Growth Kinetics, Morphology and Antibiotic Resistance ofSalmonellaTyphimurium DT104 in Brain Heart Infusion and Ground Chicken Extract

Hawkins¹,

Uknalis

Oscar

et al. 2018

Preprint

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17Growth models are predominately used in the food industry to estimate the potential growth of 18 select microorganisms under environmental conditions. The growth kinetics, cellular 19 morphology and antibiotic resistance were studied throughout the life cycle of Salmonella 20Typhimurium. The effect of the previous life cycle phase ( (which was not peer-reviewed) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The Effect of Previous Life Cycle Phase on the Growth Kinetics, Morphology and Antibiotic Resistance ofSalmonellaTyphimurium DT104 in Brain Heart Infusion and Ground Chicken Extract

Hawkins¹,

Uknalis

Oscar

et al. 2018

Preprint

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“…monocytogenes has been shown capable of long term survival in environmental and food matrices (Bruno & Freitag, 2011;Locatelli, Spor, Jolivet, Piveteau, & Hartmann, 2013;Wen, Karthikeyan, Hawkins, Anantheswaran, & Knabel, 2013). In addition, L. monocytogenes is capable of growing at refrigeration temperature (Huang, Luo, & Nou, 2015;Walker, Archer, & Banks, 1990) and has good tolerance to acidic, alkaline, and high salt media (Liu, Lawrence, Ainsworth, & Austin, 2005), suggesting that L. monocytogenes has evolved to gain fitness of surviving in environments independent of animal hosts.…”

Section: Introductionmentioning

confidence: 99%

Ralstonia insidiosa induces cell aggregation of Listeria monocytogenes

Mowery

Nagy

et al. 2016

Food Control

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a b s t r a c tBiofilm formation is an important strategy for foodborne bacterial pathogens to survive in stressful environments such as fresh produce processing facilities. Bacterial cell aggregation strongly promotes the initiation of microcolonies and the formation of biofilms on abiological surfaces. We previously showed that Ralstonia insidiosa, an environmental bacterial species frequently isolated from fresh produce facilities, may serve as a "bridge bacterium" that strongly enhanced the incorporation of several foodborne bacterial pathogens into dual species biofilms. While the R. insidiosa strain exhibited moderate cell aggregation in liquid culture, co-culturing Listeria monocytogenes with R. insidiosa resulted in significant augmentation of cell aggregation. Electron microscopy indicated that L. monocytogenes cells were initially attracted to the R. insidiosa aggregates and formed large dual species aggregates that were predominately composed of L. monocytogenes cells. The predominant presence of L. monocytogenes in the dual species aggregates was also confirmed by differential plating. These findings suggest that bridge bacteria such as R. insidiosa play critical roles in the survival of foodborne bacterial pathogens, such as L. monocytogenes and Escherichia coli, by promoting multispecies biofilm formation. The implications of such bridge bacteria on food safety need to be further evaluated.Published by Elsevier Ltd.

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“…During their growth and survival, Gram-positive and Gram-negative bacteria pass through different physiological phases (Kolter et al 1993;Hicks 2005;Finkel 2006;Bruno and Freitag 2011;Wen et al 2013). In some bacterial species, conventional exponential and stationary phases are followed successively by the death phase and a LTS phase (Finkel 2006;Helmus et al 2012).…”

Section: Introductionmentioning

confidence: 99%

The long-term survival of Propionibacterium freudenreichii in a context of nutrient shortage

et al. 2016

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Listeria monocytogenes responds to cell density as it transitions to the long-term-survival phase

Cited by 9 publications

References 28 publications

The Effect of Previous Life Cycle Phase on the Growth Kinetics, Morphology and Antibiotic Resistance ofSalmonellaTyphimurium DT104 in Brain Heart Infusion and Ground Chicken Extract

The Effect of Previous Life Cycle Phase on the Growth Kinetics, Morphology and Antibiotic Resistance ofSalmonellaTyphimurium DT104 in Brain Heart Infusion and Ground Chicken Extract

Ralstonia insidiosa induces cell aggregation of Listeria monocytogenes

The long-term survival of Propionibacterium freudenreichii in a context of nutrient shortage

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