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Metagenomic Analyses of Drinking Water Receiving Different Disinfection Treatments
Citation:
GOMEZ-ALVAREZ, V., R. P. REVETTA, AND J. W. SANTO-DOMINGO. Metagenomic Analyses of Drinking Water Receiving Different Disinfection Treatments. APPLIED AND ENVIRONMENTAL MICROBIOLOGY. American Society for Microbiology, Washington, DC, 78(17):6095-6102, (2012).
Impact/Purpose:
This study provides new insights on the genetic network and potential biological processes associated with the molecular microbial ecology of DW microbial communities.
Description:
A metagenome-based approach was utilized for assessing the taxonomic affiliation and function potential of microbial populations in free chlorine (CHL) and monochloramine (CHM) treated drinking water (DW). A total of 1,024, 242 (averaging 544 bp) and 849, 349 (averaging 554 bp) pyrosequencing reads were generated for the CHL and CHM, respectively. Most annotated proteins were found to be of bacterial origin (i.e., 90%), although eukaryotic, archaeal, and viral proteins were also identified. Differences in community structure and function were noted. Most notably, Legionella-like genes were more abundant in the CHL sample, while mycobacterial genes were more abundant in CHM. Genes associated with multiple disinfectant mechanisms were identified in both communities. Moreover, sequences linked to virulence factors, such as antibiotic resistance mechanisms, were observed in both microbial communities. This study provides new insights on the genetic network and potential biological processes associated with the molecular microbial ecology of DW microbial communities.
