Listeriocins (monocins)

Ortel, S

doi:10.1016/0168-1605(89)90021-4

Cited by 17 publications

(3 citation statements)

References 2 publications

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“…The majority of inhibitors may correspond to defective bacteriophage particles, also referred to as monocins (Curtis & Mitchell, 1992;Zink, Loessner, & Scherer, 1994), listeriocins (Lebek, Teysseire, & Baumgartner, 1993;Ortel, 1989), or bacteriocin-like compounds (Curtis & Mitchell, 1992;Yokoyama et al, 2005). However, there remains some confusion regarding inhibitory activities resulting from the production of bacteriocins among Listeria isolates (Zink, Loessner, & Scherer, 1995).…”

Section: Introductionmentioning

confidence: 97%

Influence of Listeria innocua on the growth of Listeria monocytogenes

et al. 2010

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a b s t r a c tThe growth of Listeria monocytogenes and Listeria innocua strains was monitored during this study: (i) in TSB-YE media and (ii) in a food matrix (pasteurized milk) according to the ISO 11290-1 methodology. Different inocula concentrations and mixtures were tested. The response was shown to be strain dependent. In TSB-YE the inhibition of a L. monocytogenes strain was observed in just one of the three mixtures (L. monocytogenes_1340 with L. innocua_11288) showing a reduction of 1.37 log cfu/ml after 42.5 h and 1.85 log after 66.5 h of incubation. In pasteurized milk the inhibition of L. monocytogenes by L. innocua was always observed when L. innocua was present in higher concentrations than L. monocytogenes. The reverse was also observed but only in one mixture (cocktail of six L. monocytogenes with L. innocua_2030c) when the initial concentration of L. monocytogenes was 100 times higher than L. innocua suggesting the phenomenon of quorum sensing. Furthermore, inhibitory activity was not caused by bacteriocins, and no correlation between the growth rate and inhibition was demonstrated.

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Section: Introductionmentioning

confidence: 97%

Influence of Listeria innocua on the growth of Listeria monocytogenes

et al. 2010

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“…In uno studio su 127 isolati di L. monocytogenes 203 i raggruppamenti costituiti da ceppi litici hanno consentito di definire otto gruppi fagici, ma i risultati hanno suggerito che gli agenti litici erano in realtà monocine: fagi difettosi aventi code mancanti delle regioni di testa 153 . Sebbene la suscettibilità delle monocine pare sia associata ai diversi sierotipi, non è stata trovata alcuna correlazione riguardo alla fonte animale o all'origine geografica dei ceppi di L. monocytogenes 203 .…”

Section: Tipizzazione Dei Batteriofagiunclassified

Saggi e metodi chimici, biochimici e fisici

2009

Food

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La maggior parte dei metodi trattati in questo capitolo per la ricerca e la caratterizzazione dei microrganismi sono stati sviluppati a partire dal 1960. Molti possono essere utilizzati per stimare il numero di cellule o la quantità di sottoprodotti cellulari. Diversamente dalla conta diretta al microscopio, gran parte dei metodi discussi di seguito si basa sull'attività metabolica dei microrganismi su specifici substrati, sulla valutazione della crescita, sulla determinazione di alcuni componenti cellulari -inclusi gli acidi nucleici -oppure sulla combinazione di queste tecniche. Capitolo 11 Saggi e metodi chimici, biochimici e fisici 259 J.M. Jay et al., Microbiologia degli alimenti

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“…Historically, interest in the inhibitors produced by Listeria spp. was primarily with regard to their usefulness for the development of phage typing schemes for L. monocytogenes (7,19,27,41,45). To date, there are only a few reports documenting the occurrence of isolates which produce bacteriocin-like activities (17,24).…”

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confidence: 99%

Identification of a New Plasmid-Encoded sec -Dependent Bacteriocin Produced by Listeria innocua 743

Kalmokoff¹,

Banerjee²,

Cyr³

et al. 2001

Appl Environ Microbiol

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Listeria innocua 743 produces an inhibitory activity demonstrating broad-spectrum inhibition of Listeria monocytogenes isolates. Gel-electrophoretic analysis of culture supernatants indicated that two inhibitors with different molecular weights were produced by this strain. Insertion of Tn917 into a 2.9 Kb plasmid (pHC743) generated mutants with either an impaired ability or a loss in ability to produce one of the inhibitors. This finding confirms that the phenotype is dependent on the structural and immunity gene only and that export of this bacteriocin is sec dependent. This is the first confirmation of bacteriocin production in a Listeria spp., and it is of interest that this bacteriocin is closely related to the pediocin family of bacteriocins produced by lactic acid bacteria.

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Listeriocins (monocins)

Cited by 17 publications

References 2 publications

Influence of Listeria innocua on the growth of Listeria monocytogenes

Influence of Listeria innocua on the growth of Listeria monocytogenes

Saggi e metodi chimici, biochimici e fisici

Identification of a New Plasmid-Encoded sec -Dependent Bacteriocin Produced by Listeria innocua 743

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