geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Gram negative bacteria harboring mercury resistant plasmid and some factors affecting conjugal plasmid transfer


, : Gram negative bacteria harboring mercury resistant plasmid and some factors affecting conjugal plasmid transfer. Pakistan Journal of Zoology 22(4): 335-344

A mercury resistant strain AnHg-1 which could tolerate HgCl2 (100 .mu.g/ml in the medium was obtained from the effluents of Shan Ghee Factory. It was a motile, pleomorphic, with circular, entire and convexed colonies. It prefers slightly alkaline medium and was sensitive to ampicillin, kanamycin, chloramphenicol, tetracycline, Zn+2, Ba+2, Cu+2, Co+2, Fe+3, Ni+2, Sn+2 and Mn+2. It could resist 200 .mu.g/ml of streptomycin in the medium. AnHg-1 was facultative anaerobe, spore former, which had catalase, urease, and oxidase enzymes. It could produce acid from arabinose and rhamnose. AnHg-1 was able to reduce nitrate. Two bands of plasmids were observed in it and conjugation experiments demonstrated that mercury resistance was plasmid determined. Effects of time (0-24 h), donor to recipient ratio (1-10), pH (6.5-8.5) and temperature (25.degree., 28.degree., 32.degree. and 37.degree. C) on conjugal transfer of plasmid were also observed. AnHg-1 shared maximum characters with Gram-negative Bacillus.

US$29.90


Other references

Caravaggi, C.; Cimmino, M.; Caruso, S.; Dalla Noce, S., 2006: Intramedullary compressive nail fixation for the treatment of severe Charcot deformity of the ankle and rear foot. Involvement of the ankle joint in Charcot osteoarthropathy may be associated with severe instability and fracture or collapse of the talus. Recalcitrant ulceration may result over the lateral malleolus, increasing the risk of major amputation. Thi...

Piasecki M.A.J.; Temperley S., 1988: The Central Highland Division. Pages 46-53 1988

Rabinerson, D.; Dekel, A.; Ben Rafael, Z.; Kaplan, B., 2000: Use of transcutaneous electrical nerve stimulation in obstetrics and gynecology. Harefuah 136(6): 459-463

de Almeida, E.; Dias, L.; de Sousa, F.T.; Mil-Homens, M.C.; Pataca, I.; Prata, M.M., 1997: Survival in haemodialysis: is there a role for vascular access?. Nephrology, Dialysis, Transplantation 12(4): 852-852

Schittengruber, Brigitte, 1953: The guard cells of the involucral leaves of the composites lack anthoorphin. Several composites, the epidermal cells of whose involucral leaves contained the brown pigment, anthoorphin, were examined. The pigment was lacking in the guard cells of the stomata.

Dunn, E.; Robson, P., 1965: Quantitative Gravimetric Analysis Of Fatty Ester Mixtures By Thin-Layer Chromatography. Chromatograph plates were prepared with a slurry obtained by shaking 100 g Merck Silica Gel H with 200 ml 12.5% (w/v) aqueous AgNO3. A 20% solution of fatty acid methyl esters in ether containing 60 mg ester was streaked on to a plate heated to 70...

Zhou, D.; Liporace, J.; Warren, S.; Ward, S.; Sperling, M., 2000: Metabolic bone disease in adults with epilepsy. Neurology 54(7 Supp 3): A147, April 11

Ferrell, J.A.; Vencill, W.K.; Grey, T.L., 2003: Laboratory studies on flumioxazin sorption and persistence in soil. The adsorption and desorption of flumioxazin was tested on seven soils. The half-life (t1/2) of flumioxazin in two commonly occurring groundnut soils (Greenville sandy clay loam and Tifton loamy sand soils) were tested at 15 and 25 degrees C. Adso...

Thistlethwaite, R.; Ray, R.; Kessell, G., 2009: Emergency cricothyroidotomy: equipment in anaesthetic practice. Anaesthesia 64(4): 448-449

Seth S.M., 1981: Distribution of water in India and evolutionary perspectives. Hidrologia 32: 147-148