Identification of Yellow-Pigmented Bacteria Isolated from Hospital Tap Water in Japan and Their Chlorine Resistance

Furuhata, Katsunori; Kato, Yuko; Goto, Keiichi; Saitou, Keiko; Sugiyama, Junichi; Hara, Motonobu; Fukuyama, Masafumi

doi:10.4265/bio.12.39

Cited by 36 publications

(27 citation statements)

References 16 publications

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“…Within the Alphaproteobacteria, a number of Sphingomonadaceae-related sequences were retrieved from both Beijing and Guangzhou biofilms (Table 2). Many Sphingomonadaceae bacteria can produce abundant exopolysaccharides (EPS), lack special growth requirements, and are resistant to chlorine (Furuhata et al 2007), characteristics of which conferred an ecological advantage for their growth and formation of stable biofilms in oligotrophic water environments (White et al 1996). On the other hand, it is noteworthy that some interesting populations were found in Guangzhou biofilms.…”

Section: Discussionmentioning

confidence: 99%

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

Liu

Zhang

et al. 2012

Can. J. Microbiol.

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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 to chloride than M. gordonae.

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Section: Discussionmentioning

confidence: 99%

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

Liu

Zhang

et al. 2012

Can. J. Microbiol.

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“…This was achieved by using a combination of microscopic and quantitative techniques to study S. natatoria 2.1, an aquatic species that is indigenous to many freshwater ecosystems (22,50,53), and the environmentally ubiquitous species M. luteus 2.13 (8,29,54).…”

Section: Discussionmentioning

confidence: 99%

Coaggregation by the Freshwater Bacterium Sphingomonas natatoria Alters Dual-Species Biofilm Formation

Min

Rickard

2009

Appl Environ Microbiol

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Coaggregation is hypothesized to enhance freshwater biofilm development. To investigate this hypothesis, the ability of the coaggregating bacterium Sphingomonas natatoria to form single-and dual-species biofilms was studied and compared to that of a naturally occurring spontaneous coaggregation-deficient variant. Attachment assays using metabolically inactive cells were performed using epifluorescence and confocal laser scanning microscopy. Under static and flowing conditions, coaggregating S. natatoria 2.1gfp cells adhered to glass surfaces to form diaphanous single-species biofilms. When glass surfaces were precoated with coaggregation partner Micrococcus luteus 2.13 cells, S. natatoria 2.1gfp cells formed densely packed dual-species biofilms. The addition of 80 mM galactosamine, which reverses coaggregation, mildly reduced adhesion to glass but inhibited the interaction and attachment to glass-surface-attached M. luteus 2. In nature, most biofilms are not composed of one bacterial species but instead contain multiple species (24). These multispecies communities can be responsible for the fouling of ships (9, 44), the corrosion of liquid-carrying vessels (3, 14), and chronic infections in higher organisms (41,42,57). Recent research has demonstrated that in order for multispecies biofilm communities to develop, interbacterial communication is often essential (62) and facilitates the coordination of bacterial activities to promote the formation and to maintain the integrity of multispecies biofilm communities (28,32,60). Interspecies communication can be mediated by chemical or physical means. Mechanisms for chemical communication between different species include the secretion and uptake of metabolic by-products (11, 19), the exchange of genetic material (40), and the production and recognition of interspecies signal molecules such as short peptides (36) and autoinducer-2 (10). Mechanisms for interspecies physical communication can involve cell surface structures such as flagella or fimbriae (31, 48) and also include nonspecific adhesion between bacterial species (5) as well as highly specific coaggregations mediated by lectin-saccharide interactions (48).Coaggregation, the highly specific recognition and adhesion of different bacterial species to one another, was first discovered to occur between human oral bacteria in 1970 (23). Since then, research has shown that coaggregation occurs between specific bacterial species in environments other than the human oral cavity (48). Coaggregation interactions have been detected between bacteria isolated from canine dental plaque (21), the crop of chickens (61), the human female urogenital tract (30), the human intestine (34), and wastewater and freshwater biofilms (27,37,53). In particular, Buswell et al. (8) first demonstrated that coaggregation occurred between 19 freshwater strains that were isolated from a drinking water biofilm. Further studies by Rickard et al. demonstrated that coaggregation between these 19 strains was mediated by growth-phasedependent lectin...

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“…The majority of Alphaproteobacteria sequences belonged to the orders Sphingomonadales (18.58-38.67%) and Rhizobiales (6.20-29.12%), and mainly classified into the genera Bradyrhizobium, Blastomonas, Methylobacterium, Novosphingobium, Porphyrobacter, Sphingobium, Sphingomonas, and Sphingopyxis, most members of which are common residents of fresh water habitats or potable water distribution systems (Hong et al, 2010;Liu et al, 2012;Simoes et al, 2008). Many Sphingomonadales bacteria can produce abundant exopolysaccharides, lack special growth requirements, and resist to chlorine (Furuhata et al, 2007), characteristics which conferred an ecological advantage for their growth and formation of stable biofilms in oligotrophic environments (White et al, …”

Section: Bacterial Communitiesmentioning

confidence: 99%

Pyrosequencing analysis of eukaryotic and bacterial communities in faucet biofilms

Liu

Guo

et al. 2012

Science of The Total Environment

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Identification of Yellow-Pigmented Bacteria Isolated from Hospital Tap Water in Japan and Their Chlorine Resistance

Cited by 36 publications

References 16 publications

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

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

Coaggregation by the Freshwater Bacterium Sphingomonas natatoria Alters Dual-Species Biofilm Formation

Pyrosequencing analysis of eukaryotic and bacterial communities in faucet biofilms

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