References
- Burton, N. F., Day, M. J. & Bull, A. T., 1982: Distribution of bacterial plasmids in clean and polluted sites in a South Wales river. — Appl. Environ. Microbiol. 44: 1026–1029.
- Colwell, R. R., 1987: Genetically engineered organisms in the ocean environment — risks and benefits. — In: Sleigh, M. A. (Ed.), Microbes in the Sea: 182–189. — Ellis Horwodd Ltd., Chichester.
- Domsch, K. H., Driesel, A. J., Goebel, W., Andersch, W., Lindenmaier, W., Lotz, W., Reber, H. & Schmidt, F., 1988: Considerations on release of gene-technologically engineered microorganisms into the environment. — FEMS Microbiology Ecology 53: 261–272.
- Haas, M. J. & Fleming, D., 1986: Use of biotinylated DNA probes in colony hybridization. — Nucleic Acids Res. 14: 3976.
- Hardy, K., 1981: Bacterial Plasmids. — Van Nostrand Reinhold (UK).
- Helinski, D., Cohen, S. N., Clewell, D. B.Jackson, D. A. & Hollaender, A., 1985: Plasmids in Bacteria. — Plenum Press, New York.
- Hermansson, M., Jones, G. W. & Kjelleberg, S., 1987: Frequency of antibiotic and heavy metal resistance, pigmentation, and plasmids in bacteria of the air-water interface. — Appl. Environ. Microbiol. 53: 2338–2342.
- Olson, B. H., Barkay, T. & Colwell, R. R., 1979: Role of plasmids in mercury transformation by bacteria isolated from aquatic environment. — Appl. Environ. Microbiol. 38: 478–485.
- Reanney, D. C., 1977: Genetransfer as a mechanism of microbial evolution. — Bioscience 27: 340–344.
- Saiki, R. K., Gelfand, D. H., Stoffe, S., Scharf, S. J., Higuchi, R., Horn, G. T., Mullís, K. B. & Erlich, H. A., 1988: Primer-directed enzymatic amplification of DNA with a thermostabile DNA polymerase. — Science239: 487–491.
- Schütt, C, 1988: Plasmid-DNA in natural bacterial populations of four brownwater lakes (South Sweden). — Arch. Hydrobiol. Beih. 31: 133–139.
- Schütt, C, 1989: Plasmids in the bacterial assemblage of a dystrophic lake: Evidence for plasmid-encoded nickel resistence. — Microb. Ecol. 17: 49–62.
- Schütt, C, 1990: Plasmids and their role in natural aquatic bacterial communities. In: Overbeck, J. & Chróst, J. R. (Eds.), Aquatic microbial ecology: 160–183. — Springer Verlag, New York.
- Steffan, R. J., Goksoyr, J., Bej, A. K. & Atlas, R. M., 1988: Recovery of DNA from soil and sediments. — Appl. Environ. Microbiol. 54: 2908–2915.