http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Catabolic Plasmid-Mediated Heavy Metal Resistance in Herbicide Diuron-Degrading Pseudomonas species
EL-DEEB, BAHIG A. 한국미생물 · 생명공학회 2001 Journal of microbiology and biotechnology Vol.11 No.1
Three Pseudomonas strains (Bk8, Bk9, Bk10) selected from soil for their ability to degrade herbicide diuron were tested for their heavy metal resistance. The growth of these catabolic strains on a minimal medium with various concentrations of Cd^2+, Zn^2+, Ni^2+', and Hg^2+ revealed a minimal effect on the carbon source for the inhibitory effect of the metals. One of these strains, namely, Bk8, exhibited a high resistance to the heavy metals as compared to the two other strains. This strain harbors plasmid pBk8 (110kb) and contains at least four determinants encoding heavy metal resistance. Nickel and zinc resistance are encoded by genes located on the chromosome, while cadmium and mercury resistance are on plasmid pBk8. Accordingly, the characteristics of strain Bk8 suggest that it would be useful in the bioremediation of aromatic compounds in the presence of toxic heavy metals as co-contaminants.
Plasmid-Mediated Aniline Assimilation by Pseudomonas sp. B10
El-Deeb, Bahig, A. 한국미생물 · 생명공학회 2001 Journal of microbiology and biotechnology Vol.11 No.1
An aniline-utilizing microorganism identified as a species of Pseudomonas was isolated from soil contaminated highly with aniline and urea-herbicide. This strain was able to utilize aniline as the sole source of carbon and energy, and was shown to harbor a single large plasmid mediating the aniline assimilation. Subsequent plasmid-curing of this bacterium resulted in the abolishment of the aniline utilizing phenotype and the loss of catechol-C2, 3O-oxygenase. The reestablishment of the plasmid, denoted pB10, in cured Pseudomonas sp. via filter surface mating, resulted in restoration of the aniline assimilation abilities and enzyme activity.