期刊
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
卷 66, 期 9, 页码 3722-3726出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/AEM.66.9.3722-3726.2000
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The spatial distribution of antibiotic resistance to streptomycin and kanamycin was examined in natural bacterial communities of two streams. The proportion of resistant bacteria was substantially higher (P < 0.05) in the midreaches of an industrially perturbed stream, but no such pattern was apparent in an undisturbed reference stream, The highest relative frequency of resistance was found at the confluence of a tributary draining a nuclear reactor and industrial complex. Antibiotic resistance increased with distance upstream from the confluence and was positively correlated (r(2) = 0.54, P = 0.023) with mercury concentrations in the sediments. When the data for two gears were compared, this pattern was stable for streptomycin resistance (paired t test, P < 0.05) but not for kanamycin resistance (P > 0,05), Our results imply that heavy metal pollution may contribute to increased antibiotic resistance through indirect selection.
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