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Wastewater treatment plants (WWTPs) harbor bacteria and antimicrobial resistance genes, favoring gene exchange events and resistance dissemination. Here, a culture-based and metagenomic survey of qnrA, qnrB, qnrS, and aac(6′)-Ib genes from raw sewage (RS) and activated sludge (AS) of a full-scale municipal WWTP was performed. A total of 96 bacterial isolates were recovered from nalidixic acid-enrichment...
The accumulation of compatible solutes is a prerequisite for the adaptation of microorganisms to osmotic stress imposed by salt or organic solutes. Two types of strategies exist to cope with high external solute concentrations; one strategy is found in the extremely halophilic Archaea of the family Halobacteriaceae and the Bacteria of the order Haloanaerobiales involving the accumulation of inorganic...
The phylogenetic diversity of freshwater bacteria, particularly in tropical lakes, has not been thoroughly investigated. Here, we employed a cloning- and sequencing-based analysis of the 16S rRNA gene to investigate the composition of bacterial communities from the upper (UW, 0 m depth) and bottom (BW, 7 m depth) waters of a tropical unstratified freshwater lake. A diverse bacterial community was...
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