@article{mbs:/content/journal/micro/10.1099/00221287-17-2-378, author = "Littlewood, Dorothy and Postgate, J. R.", title = "Sodium Chloride and the Growth of Desulphovibrio desulphuricans", journal= "Microbiology", year = "1957", volume = "17", number = "2", pages = "378-389", doi = "https://doi.org/10.1099/00221287-17-2-378", url = "https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-17-2-378", publisher = "Microbiology Society", issn = "1465-2080", type = "Journal Article", abstract = "SUMMARY: The effect of sodium chloride on the multiplication of four freshwater and three salt-water strains of sulphate-reducing bacteria was examined by determining the numbers of organisms in a known population which were viable in media of unfamiliar NaCl concentrations. The salt-water strains all produced variants viable at high NaCl concentrations; a population able to multiply in 1 %–10 % NaCl was obtained by ‘training’ one salt-water strain. They differed, however, in the frequency with which non-exacting variants appeared, ranging from a strain in which the whole population grew with 0·25 % NaCl to one which would not grow with less than 0· % NaCl even after repeated attempts at acclimatization. Replacement experiments indicated that the exigent strain required chloride ion; a less- exacting strain required sodium ion. The fresh-water strains produced few variants viable at NaCl concentrations above 3 %, but one strain produced variants of the salt-water type after ‘training’ to grow with 4% NaCl; sodium ion was mainly responsible for the inhibition of this strain by high NaCl concentrations. We conclude that the differences among the salt- and fresh-water strains of Desulphovibrio do not at present justify their separation into the two species aestaurii and desulphuricans. ", }