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Isolation and characterization of temperate and virulent bacteriophages of Lactobacillus plantarum

AuthorsCaso, Jose L.; González de los Reyes-Gavilán, Clara CSIC ORCID ; Herrero, Monica; Montilla, Antonia CSIC ORCID ; Rodríguez González, Ana CSIC ORCID; Suárez Fernández, Juan Evaristo CSIC
KeywordsLactobacillus plantarum
Issue Date1995
PublisherAmerican Dairy Science Association
CitationJournal of Dairy Science 78(4): 741-750
AbstractSeveral bacteriophages that are able to infect Lactobacillus plantarum have been isolated by induction of lysogenic strains with mitomycin C and by enrichment of samples from different origins. Two closely related phages (phiLP1-A and phiLP1-B), isolated from corn silage, and phage phiLP2, isolated from a homemade cheese whey, were characterized. Some features of L. plantarum phage fri were also studied that have not been previously published. Virions of the phiLP1 and phiLP2 groups displayed a typical B1 morphology (Siphoviridae); heads were isometric, and tails were long and noncontractile. The genetic material of the virions was a single molecule of doublestranded DNA without cohesive ends. The genome lengths were 80 kbp (phiLP1 group), 47 kbp (phiLP2), and 133 kbp pi). Host range was limited to some strains of L. plantarum. Temperature of propagation affected the appearance and aspect of the plaques of lysis. Phage adsorption was quite efficient, reaching >90% in most cases and often >99%, and was not affected by the temperature. One-step growth experiments showed that, in some cases, temperature strongly influenced the phage development. The temperate nature of the phages could only be established for phage phiLP2, and no lysogens were obtained for members of the phiLPI group.
DescriptionOpen Archive in partnership with American Dairy Science Association (ADSA). Under an Elsevier user license.
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