The response of some gram positive and gram negative bacteria to lead. | [International Journal of Biology and Biotechnology • 2008]

Author(s):

1. Shazia Haque: Institute of Environmental Studies, University of Karachi, Karachi, Pakistan

2. Ehsan Elahi Valeem: Department of Botany, Govt. Degree Sci. & Coin. College, Block VII, Gulshan-e-Iqbal, Karachi, Pakistan

Abstract:

Toxic eftect of various concentrations of Lead (2, 4, 8, 10, 16, 20 mg/mL) on some gram +ive and gram -ive bacteria is reported in this study. Lead inhibited the growth of gram +ive Staphylococcus areas and Bacillus cereus as well as gram -ive bacteria Salmonella typhi and Escherichia coli. The area of the zone of inhibition was directly proportional to the concentration of Pb. Gram -ive bacteria were more susceptible to Lead than gram +ive bacteria.

Page(s): 107-110

DOI: DOI not available

Published: Journal: International Journal of Biology and Biotechnology, Volume: 5, Issue: 1--2, Year: 2008

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