Interactions of Salmonella with animals and plants

Wiedemann, Agnès; Virlogeux-Payant, Isabelle; Chaussé, Anne-Marie; Schikora, Adam; Velge, Philippe

doi:10.3389/fmicb.2014.00791

Cited by 88 publications

(96 citation statements)

References 193 publications

(258 reference statements)

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“…The interaction between the plants and human pathogens is not well understood and due to potential health risks involved, is currently the focus of numerous investigations (Barak and Schroeder, 2012; Wiedemann et al, 2015). The physiological and molecular responses of the plant to colonization with bacterial human pathogens and the factors which affect it are the focus of numerous studies (Brandl, 2006; Klerks et al, 2007b; Schikora et al, 2008; Teplitski et al, 2009; Gu et al, 2011; Gutierrez-Rodriguez et al, 2012; Hirneisen et al, 2012; Markland and Kniel, 2015).…”

Section: Introductionmentioning

confidence: 99%

Salinity Stress Does Not Affect Root Uptake, Dissemination and Persistence of Salmonella in Sweet-basil (Ocimum basilicum)

et al. 2017

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Crop produce can be contaminated in the field during cultivation by bacterial human pathogens originating from contaminated soil or irrigation water. The bacterial pathogens interact with the plant, can penetrate the plant via the root system and translocate and survive in above-ground tissues. The present study is first to investigate effects of an abiotic stress, salinity, on the interaction of plants with a bacterial human pathogen. The main sources of human bacterial contamination of plants are manures and marginal irrigation waters such as treated or un-treated wastewater. These are often saline and induce morphological, chemical and physiological changes in plants that might affect the interaction between the pathogens and the plant and thereby the potential for plant contamination. This research studied effects of salinity on the internalization of the bacterial human pathogen Salmonella enterica serovar Newport via the root system of sweet-basil plants, dissemination of the bacteria in the plant, and kinetics of survival in planta. Irrigation with 30 mM NaCl-salinity induced typical salt-stress effects on the plant: growth was reduced, Na and Cl concentrations increased, K and Ca concentrations reduced, osmotic potential and anti-oxidative activity were increased by 30%, stomatal conductance was reduced, and concentrations of essential-oils in the plants increased by 26%. Despite these physical, chemical and morphological changes in the plants, root internalization of the bacteria and its translocation to the shoot were not affected, and neither was the die-off rate of Salmonella in planta. The results demonstrate that the salinity-induced changes in the sweet-basil plants did not affect the interaction between Salmonella and the plant and thereby the potential for crop contamination.

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Section: Introductionmentioning

confidence: 99%

Salinity Stress Does Not Affect Root Uptake, Dissemination and Persistence of Salmonella in Sweet-basil (Ocimum basilicum)

et al. 2017

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“…Several bacterial elements such as imbrial structures, nonimbrial adhesins, lagella, cellulose, and lipopolysaccharides (LPS) are important bacterial factors for colonization [63,64]. Although previous studies demonstrated that the atachment depends on plant and bacterial factors, no single factor was found to be essential, suggesting that bacteria use several parallel mechanisms to ensure atachment to diferent plants or to diferent plant cells under a wide variety of conditions [65].…”

Section: Atachment To Plant Surfaces and Bioilm Formationmentioning

confidence: 99%

Interaction between Salmonella and Plants: Potential Hosts and Vectors for Human Infection

Fornefeld¹,

Schierstaedt²,

Jechalke³

et al. 2017

Current Topics in Salmonella and Salmonellosis

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Fruits and vegetables are important for a healthy diet. However, when eaten raw and contaminated with human pathogens (HPs) they may cause a disease outbreak. Contamination with HPs can occur along the entire farm-to-fork production chain and Salmonella enterica is one of the most common foodborne pathogens. A range of biotic and abiotic environmental factors can inluence the complex interactions between Salmonella and plants. Moreover, the outcome of experiments largely depends on the experimental design and parameters or methods employed, and on top, on the accompanying plant microbiome and the genetic equipment of the plant and the Salmonella strain. Particularly mobile genetic elements contribute to the diversiication and adaptation of Salmonella to the plant environment. So far, litle is known about the key processes and factors inluencing the atachment and potential internalization of Salmonella in plants and the plant speciic responses. It is therefore important to beter understand the ecology of Salmonella in the soil and plant environment, in order to propose practicable recommendations for prevention of foodborne diseases. This also requires improved sensitivity and speciicity of detection methods. In this chapter, we present the current knowledge, research needs, and methodology regarding the complex interactions between Salmonella and plants.

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“…These field reports are consistent with laboratory studies that demonstrated that plant‐associated Salmonella and pathogenic E. coli ingested by vertebrate and invertebrate herbivores were shed by the animals in their feces and were capable of re‐colonizing plants once excreted into the environment (Semenov et al ., ). A number of similarities and differences in the strategies with which Salmonella colonizes its plant and animal hosts have been recently highlighted (Goudeau et al ., ; Hernandez‐Reyes and Schikora, ; Wiedemann et al ., ).…”

Section: Introductionmentioning

confidence: 97%

Involvement of the Rcs regulon in the persistence of SalmonellaTyphimurium in tomatoes

Marvasi

Moraes

Salas-González

et al. 2016

Environ Microbiol Rep

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It is becoming clear that human enteric pathogens, like Salmonella, can efficiently colonize vegetative and reproductive organs of plants. Even though the bacterium's ability to proliferate within plant tissues has been linked to outbreaks of salmonellosis, little is known about regulatory and physiological adaptations of Salmonella, or other human pathogens, to their persistence in plants. A screen of Salmonella deletion mutants in tomatoes identified rcsA and rcsB genes as those under positive selection. In tomato fruits, populations of Salmonella rcsB mutants were as much as 100-fold lower than those of the wild type. In the follow-up experiments, competitive fitness of rcsA and rcsB mutants was strongly reduced in tomatoes. Bioinformatics predictions identified a putative Salmonella RcsAB binding box (TTMGGAWWAABCTYA) and revealed an extensive putative RcsAB regulon, of which many members were differentially fit within tomatoes.

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Interactions of Salmonella with animals and plants

Cited by 88 publications

References 193 publications

Salinity Stress Does Not Affect Root Uptake, Dissemination and Persistence of Salmonella in Sweet-basil (Ocimum basilicum)

Salinity Stress Does Not Affect Root Uptake, Dissemination and Persistence of Salmonella in Sweet-basil (Ocimum basilicum)

Interaction between Salmonella and Plants: Potential Hosts and Vectors for Human Infection

Involvement of the Rcs regulon in the persistence of SalmonellaTyphimurium in tomatoes

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