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Coexistence of Legionella pneumophila Bacteria and Free-Living Amoebae in Lakes Serving as a Cooling System of a Power Plant.

Zbikowska E, Kletkiewicz H, Walczak M, Burkowska A - Water Air Soil Pollut (2014)

Bottom Line: The study was aimed at determining whether potentially pathogenic free-living amoebae (FLA) and Legionella pneumophila can be found in lakes serving as a natural cooling system of a power plant.The bacteria were identified in the biofilm throughout the entire research period and in the subsurface water layer in July and August.Hartmanella sp. and/or Naegleria fowleri were identified in the biofilm throughout the entire research period.

View Article: PubMed Central - PubMed

Affiliation: Department of Invertebrate Zoology, Faculty of Biology and Environment Protection, Nicolaus Copernicus University, Lwowska 1, 87-100 Toruń, Poland.

ABSTRACT
The study was aimed at determining whether potentially pathogenic free-living amoebae (FLA) and Legionella pneumophila can be found in lakes serving as a natural cooling system of a power plant. Water samples were collected from five lakes forming the cooling system of the power plants Pątnów and Konin (Poland). The numbers of investigated organisms were determined with the use of a very sensitive molecular method-fluorescence in situ hybridization (FISH). The result of the present study shows that thermally altered aquatic environments provide perfect conditions for the growth of L. pneumophila and amoebae. The bacteria were identified in the biofilm throughout the entire research period and in the subsurface water layer in July and August. Hartmanella sp. and/or Naegleria fowleri were identified in the biofilm throughout the entire research period.

No MeSH data available.


Related in: MedlinePlus

Positive result of FISH hybridization for Naegleria fowleri; bar = 50 mm
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Related In: Results  -  Collection


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Fig3: Positive result of FISH hybridization for Naegleria fowleri; bar = 50 mm

Mentions: L. pneumophila were identified in the biofilm throughout the entire research period; the highest number was noted in July at 2.27 × 103 cells cm−3. Half of this number was noted in May and October, at 1.51 × 103 cells cm−3 (Fig. 3). In the subsurface water layer, L. pneumophila were identified only in July (1.13 × 103 cells cm−3) and August (3.02 × 103 cells cm−3). In May, July, and October, L. pneumophila were more abundant in the biofilm. In August, they were more abundant in the subsurface water layer. The number of L. pneumophila in the biofilm was positively correlated with water temperature (r = 0.86).Fig. 3


Coexistence of Legionella pneumophila Bacteria and Free-Living Amoebae in Lakes Serving as a Cooling System of a Power Plant.

Zbikowska E, Kletkiewicz H, Walczak M, Burkowska A - Water Air Soil Pollut (2014)

Positive result of FISH hybridization for Naegleria fowleri; bar = 50 mm
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4127003&req=5

Fig3: Positive result of FISH hybridization for Naegleria fowleri; bar = 50 mm
Mentions: L. pneumophila were identified in the biofilm throughout the entire research period; the highest number was noted in July at 2.27 × 103 cells cm−3. Half of this number was noted in May and October, at 1.51 × 103 cells cm−3 (Fig. 3). In the subsurface water layer, L. pneumophila were identified only in July (1.13 × 103 cells cm−3) and August (3.02 × 103 cells cm−3). In May, July, and October, L. pneumophila were more abundant in the biofilm. In August, they were more abundant in the subsurface water layer. The number of L. pneumophila in the biofilm was positively correlated with water temperature (r = 0.86).Fig. 3

Bottom Line: The study was aimed at determining whether potentially pathogenic free-living amoebae (FLA) and Legionella pneumophila can be found in lakes serving as a natural cooling system of a power plant.The bacteria were identified in the biofilm throughout the entire research period and in the subsurface water layer in July and August.Hartmanella sp. and/or Naegleria fowleri were identified in the biofilm throughout the entire research period.

View Article: PubMed Central - PubMed

Affiliation: Department of Invertebrate Zoology, Faculty of Biology and Environment Protection, Nicolaus Copernicus University, Lwowska 1, 87-100 Toruń, Poland.

ABSTRACT
The study was aimed at determining whether potentially pathogenic free-living amoebae (FLA) and Legionella pneumophila can be found in lakes serving as a natural cooling system of a power plant. Water samples were collected from five lakes forming the cooling system of the power plants Pątnów and Konin (Poland). The numbers of investigated organisms were determined with the use of a very sensitive molecular method-fluorescence in situ hybridization (FISH). The result of the present study shows that thermally altered aquatic environments provide perfect conditions for the growth of L. pneumophila and amoebae. The bacteria were identified in the biofilm throughout the entire research period and in the subsurface water layer in July and August. Hartmanella sp. and/or Naegleria fowleri were identified in the biofilm throughout the entire research period.

No MeSH data available.


Related in: MedlinePlus