花旗松（Pseudotsuga menziesii）凋落物微宇宙中镉介导的抗生素抗性细菌的富集。
Enrichment of cadmium-mediated antibiotic-resistant bacteria in a Douglas-fir (Pseudotsuga menziesii) litter microcosm.
作者信息
Lighthart B
出版信息
Appl Environ Microbiol. 1979 May;37(5):859-61. doi: 10.1128/aem.37.5.859-861.1979.
Abstract
A set of Douglas-fir needle litter microcosms was amended with cadmium, acid, a combination of both, or neither. After 2 weeks of incubation, bacterial colony counts were made of litter homogenates inoculated onto agar media containing an antibiotic (streptomycin, chloromycetin, ampicillin, or gentamicin), cadmium, both, or neither. In all microcosms bacterial abundance was similar but the quality was very dissimiliar. Cadmium-treated microcosms had populations enriched for cadmium and gentamicin resistance and streptomycin and chloramphenicol sensitivity. Acid amendment had no consistent effect on the microcosm populations except that which could be attributed to the cadmium treatment amendment alone.
摘要
一组花旗松针叶凋落物微观系统分别用镉、酸、两者的组合或不添加任何物质进行处理。培养2周后，对接种到含有抗生素（链霉素、氯霉素、氨苄青霉素或庆大霉素）、镉、两者都有或两者都没有的琼脂培养基上的凋落物匀浆进行细菌菌落计数。在所有微观系统中，细菌丰度相似，但质量差异很大。用镉处理的微观系统中，细菌群体富含对镉和庆大霉素的抗性以及对链霉素和氯霉素的敏感性。酸处理除了可单独归因于镉处理的影响外，对微观系统中的细菌群体没有一致的影响。
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