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Artículo

Sensitivity of capsular-producing Streptococcus thermophilus strains to bacteriophage adsorption

Rodriguez, Maria CeciliaIcon ; Van der Meulen, Roel; Vaningelgem, Frederik; Font, Graciela MariaIcon ; Raya, Raul RicardoIcon ; De Vuyst, Luc; Mozzi, Fernanda BeatrizIcon
Fecha de publicación: 04/2008
Editorial: Wiley Blackwell Publishing, Inc
Revista: Letters in Applied Microbiology
ISSN: 0266-8254
e-ISSN: 1472-765X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Aims: To determine whether the presence and type of exopolysaccharides (EPS), slime-EPS or capsular, and the structural characteristics of the polymers produced by Streptococcus thermophilus strains could interfere with or be involved in phage adsorption. Methods and Results: Phage-host interactions between eight EPS-producing Strep. thermophilus strains (CRL419, 638, 804, 810, 815, 817, 821, 1190) and five streptococcus specific phages (φYsca, φ3, φ5, φ6, φ8) isolated from Argentinean faulty fermentation failed yoghurts were evaluated. No relationship was found between the EPS chemical composition and the phage sensitivity/resistance phenotype. In general, the capsular-producing strains were more sensitive to phage attacks than the noncapsular-producing strains. Streptococcus thermophilus CRL1190 (capsular-producing) was the only strain sensitive to all bacteriophages and showed the highest efficiency of plating. Phage adsorption to a capsular-negative, EPS low-producing mutant of strain CRL1190 was reduced, especially for φYcsa and φ8. Conclusions: The presence of capsular polysaccharide surrounding the cells of Strep. thermophilus strains could play a role in the adsorption of specific phages to the cells. Significance and Impact of the Study: Capsular-producing Strep. thermophilus strains should be evaluated for their bacteriophage sensitivity if they are included in starter cultures for the fermented food industry.
Palabras clave: Bacteriophages , Capsular Polysaccharides , Exopolysaccharides , Lactic Acid Bacteria
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/55299
DOI: http://dx.doi.org/10.1111/j.1472-765X.2008.02341.x
URL: https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1472-765X.2008.02341.x
Colecciones
Articulos(CERELA)
Articulos de CENTRO DE REFERENCIA PARA LACTOBACILOS (I)
Articulos(OCA HOUSSAY)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA HOUSSAY
Citación
Rodriguez, Maria Cecilia; Van der Meulen, Roel; Vaningelgem, Frederik; Font, Graciela Maria; Raya, Raul Ricardo; et al.; Sensitivity of capsular-producing Streptococcus thermophilus strains to bacteriophage adsorption; Wiley Blackwell Publishing, Inc; Letters in Applied Microbiology; 46; 4; 4-2008; 462-468
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