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Production of bacteriocins by Streptococcus bovis strains from Australian ruminants

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Joachimsthal, E.L., Reeves, R.K.H., Hung, J., Nielsen, L. K., Ouwerkerk, D., Klieve, A. V. and Vickers, C.E. (2010) Production of bacteriocins by Streptococcus bovis strains from Australian ruminants. Journal of Applied Microbiology, 108 (2). pp. 428-436. ISSN 13645072 (ISSN)

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Article Link: https://doi.org/10.1111/j.1365-2672.2009.04432.x


Aims: To examine the prevalence of bacteriocin production in Streptococcus bovis isolates from Australian ruminants and the feasibility of industrial production of bacteriocin. Methods and Results: Streptococcus bovis strains were tested for production of bacteriocin-like inhibitory substances (BLIS) by antagonism assay against Lactococcus lactis. BLIS production was associated with source animal location (i.e. proximity of other bacteriocin-positive source animals) rather than ruminant species/breed or diet. One bacteriocin showing strong inhibitory activity (Sb15) was isolated and examined. Protein sequence, stability and activity spectrum of this bovicin were very similar to bovicin HC5. Production could be increased through serial culturing, and increased productivity could be partially maintained during cold storage of cultures. Conclusions: BLIS production is geographically widely distributed in Eastern Australia, and it appears that the bacteriocin+ trait is maintained in animals at the same location. The HC5-like bacteriocin, originally identified in North America, is also found in Australia. Production of bacteriocin can be increased through serial culturing. Significance and Impact of the Study: The HC5-like bacteriocins appear to have a broad global distribution. Serial culturing may provide a route towards commercial manufacturing for use in industrial applications, and purified bacteriocin from S. bovis Sb15 could potentially be used to prevent food spoilage or as a feed additive to promote growth in ruminant species. © 2009 The Society for Applied Microbiology.

Item Type:Article
Business groups:Animal Science
Keywords:Antimicrobial growth promotants Bacteriocin Geographical distribution HC5 Streptococcus bovis bacteriocin like inhibitory substance bovicin unclassified drug antagonism antimicrobial activity bacterial disease bacterium feasibility study industrial production isolated population ruminant amino acid sequence article Australia bacterial strain bacterium culture bovids cryopreservation geographic distribution Lactococcus lactis nonhuman protein isolation protein stability protein synthesis Animals Bacteriocins Geography Ruminants Animalia
Subjects:Science > Microbiology
Science > Microbiology > Microorganisms in the animal body
Animal culture > Cattle
Veterinary medicine > Veterinary microbiology
Live Archive:16 Feb 2023 06:38
Last Modified:16 Feb 2023 06:38

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