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2011 (Vol. 3, Issue: 4)
Article Information:

Adhesion of Escherichia coli and Pseudomonas aeruginosa on Rock Surface in Aquatic Microcosm: Assessment of the Influence of Dissolved Magnesium Sulfate and Monosodium Phosphate

Olive V. Noah Ewoti, Moïse Nola, Luciane M. Moungang, Mireille E. Nougang, François Krier and Nour-Eddine Chihib
Corresponding Author:  Moïse Nola 

Key words:  Adhesion, aquatic microcosm, dissolved salts, E. coli, P. aeruginosa, rock,
Vol. 3 , (4): 364-374
Submitted Accepted Published
2011 February, 03 2011 March, 15 2011 June, 05
Abstract:

This study aims at assessing the aquatic microcosm conditions, the influence of MgSO4 and NaH2PO4 on the adhesion of P. aeruginosa and E. coli on the basalt, micaschist, granite and sandstone fragments during 180 to 1440 min. Results showed that in the presence of MgSO4 at concentrations of 0.02, 0.04, 0.06 and 0.08 mol/L the abundances of P. aeruginosa adhered on the fragments rock expressed as CFU/cm2 which varies from 2.8×105 to 6.2×108 at 0.02 mol/L, 2.5×104 to 4×106 at 0.04 mol/L, 1.2×104 to 1.8×108 at 0.06 mol/L, and from 2.5×105 to 1.9×107 at 0.08 mol/L. E. coli also varies from 2.1×104 to 7.3×104 at 0.02 mol/L, 2.7×104 to 4.5×105 at 0.04 mol/L, 2.3×104 to 4×105 at 0.06 mol/L, and from 104 to 1.2×105 at 0.08 mol/L. In the presence of NaH2PO4, the degree of P. aeruginosa adherence varies from 3.8×104 to 4.6×107 at 0.02 mol/L, 1.3×105 to 3.4×107 at 0.04 mol/L, 9×104to 1.9×107 at 0.06 mol/L, and from 5.3×103 to 1.4×107 at 0.08 mol/L. E. coli equally, varies from 2.8×104 to 1.9×107 at 0.02 mol/L, 7.6×103 to 1.6×107 at 0.04 mol/L, 2.2×104 to 2×107 at 0.06 mol/L, and from 1.2×104 to 1.7×105 at 0.08 mol/L. Cells adherence was significantly influenced by the mineralogical properties of rocks and the concentration of dissolved ions in the solution (p<0.05). The presence of P. aeruginosa and those of E. coli adherence also differed significantly (p<0.01). This would be as a result of the insertion of flagellum on their surface.
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  Cite this Reference:
Olive V. Noah Ewoti, Moïse Nola, Luciane M. Moungang, Mireille E. Nougang, François Krier and Nour-Eddine Chihib, 2011. Adhesion of Escherichia coli and Pseudomonas aeruginosa on Rock Surface in Aquatic Microcosm: Assessment of the Influence of Dissolved Magnesium Sulfate and Monosodium Phosphate.  Research Journal of Environmental and Earth Sciences, 3(4): 364-374.
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