Abstract
Thiobacillus acidophilus andT. ferrooxidans were separated by centrifugation on the basis of their cell density in Renografin gradients. For both species, growth history was the largest factor influencing cell density. Density was greatest forT. acidophilus andT. ferrooxidans grown with tetrathionate, followed byT. acidophilus grown with glucose.T. ferrooxidans grown with ferrous sulfate was the least dense.T. acidophilus was isolated from iron-grownT. ferrooxidans by separation in a Renografin gradient. Plasmid patterns ofT. acidophilus andT. ferrooxidans were used to confirm the separation of the two species in mixed gradients.
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Literature Cited
Arkensteyn, G. J. M. W., de Bont, J. A. M. 1980.Thiobacillus acidophilus: A study of its presence inThiobacillus ferrooxidans cultures. Canadian Journal of Microbiology26:1057–1065.
Cahn, F. H., Fox, M. S. 1968. Fractionation of transformable bacteria from competent cultures ofBacillus subtilis on Renografin gradients. Journal of Bacteriology95:867–875.
Dawes, I. W., Wright, J. F., Vezinhet, F., Ajam, N. 1980. Separation on Urografin gradients of subpopulations from sporulatingSaccharomyces cerevisiae cultures. Journal of General Microbiology119:165–171.
Dean, D. H., Douthit, H. D. 1974. Buoyant density heterogeneity in spores ofBacillus subtilis: Biochemical and physiological basis. Journal of Bacteriology117:601–610.
Guay, R., Silver, M. 1975.Thiobacillus acidophilus sp. nov.; isolation and some physiological characteristics. Canadian Journal of Microbiology21:281–288.
Guay, R., Silver, M., Torma, A. E. 1976. Base composition of DNA isolated fromThiobacillus ferrooxidans grown on different substrates. Revue Canadienne de Biologie35:61–67.
Hadden, C., Nester, E. W. 1968. Purification of competent cells in theBacillus subtilis transformation system. Journal of Bacteriology95:876–885.
Harrison, A. P., Jarvis, B. W., Johnson, J. L. 1980. Heterotrophic bacteria from cultures of autotrophicThiobacillus ferrooxidans: Relationships as studied by means of deoxyribonucleic acid homology. Journal of Bacteriology143:448–454.
Mao, M. W. H., Dugan, P. R., Martin, P. A. W., Tuovinen, O. H. 1980. Plasmid DNA in chemoorganotrophicThiobacillus ferrooxidans andT. acidophilus. FEMS Microbiology Letters8:121–125.
Martin, P. A. W., Dugan, P. R., Tuovinen, O. H. 1981. Plasmid DNA in acidophilic, chemolithotrophic thiobacilli. Canadian Journal of Microbiology27:850–853.
Prentice, G. A., Wolfe, F. H., Clegg, L. F. L. 1972. The use of density gradient centrifugation for the separation of germinated from non-germinated spores. Journal of Applied Bacteriology35:345–349.
Reed, W. M. R., Dugan, P. R. 1979. Study of developmental stages ofMethylosinus trichoporium with the aid of fluorescent-antibody staining techniques. Applied and Environmental Microbiology38:1179–1183.
Schatz, G., Halsbrunner, E., Tuppy, H. 1964. Deoxyribonucleic acid associated with yeast mitochondria. Biochemical and Biophysical Research Communications15:127–132.
Shafia, F., Brinson, K. R., Heinzman, M. W., Brady, J. M. 1972. Transition of chemolithotrophFerrobacillus ferrooxidans to obligate organotrophy and metabolic capabilities of glucose-grown cells. Journal of Bacteriology111:56–65.
Silver, M. 1978. Metabolic mechanisms in iron-oxidizing thiobacilli, pp. 3–17 In: Murr, L. E., Torma, A. E., Brierley, J. A. (eds.), Metallurgical applications of bacterial leaching and related microbiological phenomena. New York: Academic Press.
Tamir, J., Gilvarg, C. 1966. Density gradient centrifugation for the separation of sporulating forms of bacteria. Journal of Biological Chemistry241:1085–1090.
Tuovinen, O. H., Kelly, D. P. 1973. Studies on the growth ofThiobacillus ferrooxidans. I. Use of membrane filters and ferrous iron agar to determine viable numbers, and comparison with14CO2-fixation and iron oxidation as measures of growth. Archiv für Mikrobiologie88:285–298.
Tuovinen, O. H., Kelly, D. P. 1974. Studies on the growth ofThiobacillus ferrooxidans. V. Factors affecting growth in liquid culture and development of colonies on solid media containing inorganic sulphur compounds. Archives of Microbiology98:351–364.
Tuovinen, O. H., Kelly, D. P., Dow, C. S., Eccleston, M. 1978. Metabolic transitions in cultures of acidophilic thiobacilli, pp. 61–81. In: Murr, L. E., Torma, A. E., Brierley, J. A. (eds.), Metallurgical applications of bacterial leaching and related microbiological phenomena. New York: Academic Press.
Wood, A. P., Kelly, D. P. 1978. Comparative radiorespirometric studies of glucose oxidation in three facultatively heterotrophic thiobacilli. FEMS Microbiology Letters4:283–286.
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Martin, P.A.W., Dugan, P.R. & Tuovinen, O.H. Differentiation of acidophilic thiobacilli by cell density in renografin gradients. Current Microbiology 6, 81–84 (1981). https://doi.org/10.1007/BF01569008
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DOI: https://doi.org/10.1007/BF01569008