Study on Adhesion of Bacterio-contaminants to Fragments of Rocks Immersed in Water: Impact of Some Chemical Properties of the Medium and Intrinsic to the Cells
A study was conducted in an aquatic microcosm with the goal of determining the impact of environmental chemical factors and cell-specific characteristics on the retention of bacterial pollutants in the aquatic environment on solid substrates. Sandstone, basalt, granite, and micaschist were employed as rocky substrates. There are four main petrographic and mineralogical features in these rocks. Pseudomonas aeruginosa, Vibrio cholerae, and Enterococcus faecalis were among the bacteria obtained using normal procedures and utilised for adhesion testing. These bacteria are rod-shaped, comma-shaped, and spherical-shaped, with or without a flagellum. Furthermore, this ciliature, if present, might be single or in tufts, polar or non-polar, and can cover the entire cell. The pH of the medium, as well as the concentrations of BOM and salts, were all different. The bacteria were incubated for 180 to 1440 minutes to allow them to attach to the substrates. The adhering cells were then separated in a sterile environment by placing the pebbles in three test tubes, each containing 10 ml of sterile physiological water (0.85 percent NaCl). Bacteria found in surface or groundwater appear to be able to cling to the surfaces of inorganic rocks in various quantities. The natural cleaning of wastewater is aided by the adherence and retention of microorganisms. The adhesion of P. aeruginosa, V. cholerae, and E. faecalis changes with time. Overall, adhesion rates range from 11 to 12.44×103 cells/cm2/h, with E. faecalis adhering more quickly simply due to gravity. Environmental circumstances, as well as the chemical characteristics of rocks and soil, play a role in these rate fluctuations. Flagellum serves a dual purpose in attracting and relaunching microorganisms from their substrates.
Author (S) Details
Olive Vivien Noah Ewoti
Laboratory of Hydobiology and Environment, Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde 1, PO Box 812, Cameroon.
Daniel Ebang Menye
University of Maroua, Higher Teacher’s Training School College, P.O Box 55 Maroua, Cameroon.
Raoul Polycarpe Tuekam Kayo
Laboratory of microbiology, Department of Microbiology, Faculty of Science, University of Bamenda, Cameroon.
Luciane Marlyse Moungang
Laboratory of Hydobiology and Environment, Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde 1, PO Box 812, Cameroon.
Antoine Tamsa Arfao
Laboratory of Hydobiology and Environment, Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde 1, PO Box 812, Cameroon.
Samuel Davy Baleng
Laboratory of Hydobiology and Environment, Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde 1, PO Box 812, Cameroon.
Yves Yogne Poutoum
Laboratory of Hydobiology and Environment, Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde 1, PO Box 812, Cameroon.
Moïse Nola
Laboratory of Hydobiology and Environment, Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde 1, PO Box 812, Cameroon.
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