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Investigation of phage resistance and plasmid profiles in mutants of industrial strains of lactococci deficient for the ability to ferment sugars


, : Investigation of phage resistance and plasmid profiles in mutants of industrial strains of lactococci deficient for the ability to ferment sugars. Russian Biotechnology ( 3): 12-16

Mutants defective for utilization of lactose, sucrose, and fructose were obtained from a group of industrial strains of Lactococcus lactis var. lactis and var. cremoris. An analysis of the plasmid profiles showed the absence of plasmids in the 45-54 kb pair range in certain mutants.

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Molotova, N.O.; Ganina, V.I.; Molotov, S.V.; Sukhodolets, V.V., 1993: A study on phage resistance and plasmid profiles of the mutants of industrial Lactococcus strains deficient in utilization of sugars. The mutants defective in the utilization of lactose, sucrose and fructose were isolated from the group of industrial strains of Lactococcus lactis subsp. lactis and subsp. cremoris. The analysis of plasmid profiles showed the absence in some mutan...

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Spencer, J.; Spencer, D.1; Miller, R., 1983: Inability of petite mutants of industrial yeasts to utilize various sugars, and a comparison with the ability of the parent strains to ferment the same sugars microaerophilically Saccharomyces cerevisiae. Zeitschrift fur Naturforschung Section C Biosciences 38(5-6): 405-407

Molotova, N.O.; Ganina, V.I.; Molotov, S.V.; Sukhodolets, V.V., 1993: A study of phage resistance and plasmid profiles of mutant strains of industrial Lactococcus defective in utilization of sugars. Industrial strains of Lactococcus lactis var. lactis and L. lactis var. cremoris exhibiting phage resistance were cultured and, from these, strains that were defective in utilizing lactose, sucrose and fructose were isolated. Plasmid DNA was separ...

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Vlegels, P.A.P.; Helmerhorst, T.H.; Ven, P.B. van der; Biesterveld, S.; Wouters, J.T.M., 1989: Plasmid profiles of Lactococcus lactis subsp. cremoris strains and mutants in relation to phage resistance. Lactococcus lactis var. cremoris R1 and L. lactis var. cremoris 10 contain a large and complex plasmid complement. Plasmid profiles of bacteriophage-resistant mutants of these strains, which failed to adsorb their homologous phage in an efficient...

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