Co-selection for antibiotic tolerance in Cu-polluted soil is detected at higher Cu-concentrations than increased Cu-tolerance.

摘要

Co-selection for antibiotic tolerance in Cu polluted soils was studied in a laboratory experiment. Pollution Induced Community Tolerance (PICT) of the bacterial community was estimated using leucine incorporation. PICT was found in Cu polluted soils to tetracycline (>=8 mmol Cu kg-1), tylosin (>=16 mmol Cu kg-1) and vancomycin (>=16 mmol Cu kg-1). PICT to the antibiotics was found at higher Cu pollution levels than PICT to Cu (>=2 mmol Cu kg-1), suggesting that legislative limits protecting for effects of Cu on soil bacteria would also protect from increasing antibiotic co-tolerance.