Diversity of bacteria and mycobacteria in biofilms of two urban drinking water distribution systems

Canadian Journal of Microbiology
Ruyin LiuXinchun Liu

Abstract

In this study, to give insight into the bacterial diversity of biofilms from full-scale drinking water distribution systems (DWDSs), the bacterial community compositions of biofilms from two urban DWDSs (Guangzhou and Beijing, China) were determined using a 16S rRNA gene library technique. Meanwhile, the occurrence and diversity of mycobacteria were also analyzed by a Mycobacterium -specific hsp gene assay. The biofilms from the full-scale DWDSs have complex bacterial populations. Proteobacteria was the common and predominant group in all biofilm samples, in agreement with previous reports. The community structures of bacteria at the three sites in Guangzhou DWDS were significantly different, despite the similar physicochemical properties of portable water. Some abundant and peculiar bacterial phylotypes were noteworthy, including Methylophilus , Massilia, and Planomicrobium , members of which are rarely found in DWDSs and their roles in DWDS biofilms are still unclear. The diversity of Mycobacterium species in biofilm samples was rather low. Mycobacterium arupense and Mycobacterium gordonae were the primary Mycobacterium species in Guangzhou and Beijing biofilms, respectively, indicating that M. arupense may be more resistant ...Continue Reading

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Dec 18, 2013·Water Research·Eric P HolingerNorman R Pace
Aug 1, 2012·The Science of the Total Environment·Ruyin LiuMin Yang
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Jun 20, 2021·The Science of the Total Environment·Dan HeQinglong L Wu
Jul 27, 2021·Environmental Microbiology·Le Duc Huy TaEvelyn Xiu Ling Loo

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