Pollution Research Paper

ABIOTIC VARIABLES INFLUENCING PSEUDOMONASAERUGINOSA’S SURVIVAL IN TWO MOROCCAN HUMID ZONES(SEAWATER AND WELL WATER)

SOFIA GHIZLAN GROHS, AMINE RKHAILA, MOUHATTI SAGA,SAÏD OULKHEIR AND KHADIJA OUNINE

Abstract

Pseudomonas aeruginosa is a pathogenic bacterium that grows in moist conditions. It is the source of several high-risk disease (affecting the lungs, bloodstream, or heart valves...). The purpose of this study is to investigate at the survival of Pseudomonas aeruginosa in two samples from Mehdia salt water (S1) and Mnasra well water (S2) in Morocco from 0 to 72 days. The impact of the physico- chemical parameters of the two zones on Pseudomonas aeruginosa growth shows that temperature (19.5 °C in S1, and 26°C in S2), pH (7.4°C in S1, and 6.3 in S2), electrical conductivity (7.7S/cm inS1, and 1015 S/cm in S2), and bicarbonates (161.62 mg/l) have positive effects on the bacterium’sabundance (1.15 109 UFC/ml). Temperature (19.5°C in S1, and 26°C in S2), pH (7.4°C in S1, and 6.3in S2), electrical conductivity (7.7S/cm in S1, and 1015 S/cm in S2), and bicarbonates (161.62 mg/l) have positive effects on the bacterium’s abundance (1.15 109 UFC/ml). However, the amounts ofsodium (89 mg/l at S2) and potassium (3.5 mg/l at S2) restrict the growth of Pseudomonas aeruginosa. High-suspended solids (813.5 mg/l), chemical oxygen demand (410 mg/l), andbiochemical oxygen demand (200 mg/l) in both zones, promoted its development.