Indigenous heavy metal multiresistant microbiota of las Catonas stream

• Published in: Environmental monitoring and assessment 2005-06, Vol.105 (1-3), p.81-97
• Main Authors: VULLO, Diana L, CERETTI, Helena M, HUGHES, Enrique A, RAMIREZ, Silvana, ZALTS, Anita
• Format: Article
• Language: English
• Subjects: Animal, plant and microbial ecology; Applied ecology; Applied sciences; Aquatic life; Aquatic organisms; Argentina; Biodegradation, Environmental; Biological and medical sciences; Cadmium; Cities; Continental surface waters; Earth sciences; Earth, ocean, space; Ecotoxicology, biological effects of pollution; Engineering and environment geology. Geothermics; Environmental Monitoring; Exact sciences and technology; Fresh water environment; Freshwater; Fundamental and applied biological sciences. Psychology; Heavy metals; Land use; Metals, Heavy - analysis; Metals, Heavy - metabolism; Metropolitan areas; Microbiota; Natural water pollution; Pollution; Pollution, environment geology; Pore water; Pseudomonas fluorescens; Pseudomonas fluorescens - growth & development; Pseudomonas fluorescens - isolation & purification; Pseudomonas fluorescens - metabolism; Pseudomonas putida - growth & development; Pseudomonas putida - isolation & purification; Pseudomonas putida - metabolism; Rivers - chemistry; Rivers - microbiology; Urban agriculture; Wastewater treatment; Water Microbiology; Water Pollutants, Chemical - analysis; Water Pollutants, Chemical - metabolism; Water treatment and pollution
• ISSN: 0167-6369; 1573-2959
• DOI: 10.1007/s10661-005-3157-4

Las Catonas stream (Buenos Aires Metropolitan Area) receives a complex mixture of pollutants from point and diffuse sources because of the agricultural, industrial and urban land uses of its basin. Widespread detection of heavy metals exceeding aquatic life protection levels has occurred in monitoring reconnaissance studies in surface and pore water. As a result of the screening of Cu, Cd, Zn and Pb resistant/tolerant and culturable microbiota, B101N and 200H strains (Pseudomonas fluorescens or putida) were isolated and selected for further studies. They showed 65% Cd and 35% Zn extraction efficiency from aqueous phase. The potential use of these strains in wastewater treatment is currently investigated in order to contribute to decrease heavy metal pollution, a problem affecting every stream of Buenos Aires Metropolitan Area.