scholarly journals The Role of the Motility of Methylobacterium in Bacterial Interactions in Drinking Water

Water ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1386 ◽  
Author(s):  
Erifyli Tsagkari ◽  
William Sloan

Bacterial motility is one important factor that affects biofilm formation. In drinking water there are key bacteria in aggregation, whose biology acts to enhance the formation of biofilms. However, it is unclear whether the motility of these key bacteria is an important factor for the interactions between bacteria in drinking water, and, subsequently, in the formation of aggregates, which are precursors to biofilms. Thus, the role of the motility of one of these key bacteria, the Methylobacterium strain DSM 18358, was investigated in the interactions between bacteria in drinking water. The motility of pure Methylobacterium colonies was initially explored; if it was affected by the viscosity of substrate, the temperature, the available energy and the type of substrate. Furthermore, the role of Methylobacterium in the interactions between mixed drinking water bacteria was investigated under the mostly favourable conditions for the motility of Methylobacterium identified before. Overall, the motility of Methylobacterium was found to play a key role in the communication and interactions between bacteria in drinking water. Understanding the role of the motility of key bacteria in drinking water might be useful for the water industry as a potential tool to control the formation of biofilms in drinking water pipes.

2016 ◽  
Vol 72 (4) ◽  
pp. 773-782 ◽  
Author(s):  
Anca Farkas ◽  
Cornelia Crăciunaş ◽  
Cecilia Chiriac ◽  
Edina Szekeres ◽  
Cristian Coman ◽  
...  

2006 ◽  
Vol 54 (3) ◽  
pp. 49-56 ◽  
Author(s):  
J. Silhan ◽  
C.B. Corfitzen ◽  
H.J. Albrechtsen

Segments of used drinking water pipes of galvanised steel (GS), cross-linked polyethylene (PEX), copper pipes (Cu) or new medium-density polyethylene (PE) were investigated for the formation of biofilm and survival of E. coli in biofilm and in the water phase. Pipes were filled with water and incubated at 15 °C or 35 °C under static conditions. Biofilm formation was followed during 32, 40 and 56 (58) d. The most dense biofilm was formed on GS, reaching approximately 4.7×105 CFU/cm2 measured as heterotrophic plate count (HPC), and at the other materials the density reached 3×103 CFU/cm2 on PE and PEX and 5×101 and 5×102 CFU/cm2 on Cu pipes after 58 d at 15 °C. Biofilm HPC values were higher at 35 °C than at 15 °C, with only slightly higher values on the metals, but 100-fold higher on PE and PEX. Adenosine triphosphate (ATP) measurements confirmed the general trends observed by HPC. Higher temperature was seen to be an important factor reducing E. coli survival in the water phase in drinking water pipes. At 15 °C E. coli survived more than 4 d in GS and Cu pipes and 8 d in PE pipes, but was not detected after 48 h at 35 °C. The E. coli survived longer at both temperatures in the glass control bottles than in the drinking water pipes. Despite the obvious biofilm formation, E. coli was not detected in the biofilm at any of the investigated surfaces.


RSC Advances ◽  
2019 ◽  
Vol 9 (55) ◽  
pp. 32184-32196 ◽  
Author(s):  
I. B. Gomes ◽  
L. C. Simões ◽  
M. Simões

Copper alloys demonstrated comparable or higher performance than elemental copper in biofilm control. The alloy containing 96% copper was the most promising surface in biofilm control and regrowth prevention.


Meat Science ◽  
2014 ◽  
Vol 97 (3) ◽  
pp. 298-309 ◽  
Author(s):  
Efstathios Giaouris ◽  
Even Heir ◽  
Michel Hébraud ◽  
Nikos Chorianopoulos ◽  
Solveig Langsrud ◽  
...  

2017 ◽  
pp. 50-61
Author(s):  
Zvezdimira Tsvetanova ◽  
Hristo Najdenski

In this review, the dissemination of bacterial pathogens in natural waters and the mechanisms of their transmission in drinking water, and the role of water-associated biofilms for their survival or growth are discussed. The current state of the studies on biofilm-formation potential of the emerged pathogens in drinking water and the role of interspecies interactions for attachment and survival of pathogenic bacteria in the biofilm community is summarized. The contribution of the biofilms for increasing antimicrobial resistance of pathogens is discussed.


Author(s):  
Ana F.A. Chaves ◽  
Lúcia Chaves Simões ◽  
Russell Paterson ◽  
Manuel Simões ◽  
Nelson Lima

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