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Aquatic Microbial Ecology

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AME 66:77-86 (2012)  -  DOI:

Distribution of aerobic anoxygenic phototrophic bacteria in glacial lakes of northern Europe

Michal Mašín1,2,*, Zuzana Čuperová1,2, Eva Hojerová1,2, Ivette Salka3, Hans-Peter Grossart3, Michal Koblížek1,2

1Institute of Microbiology CAS, Department of Phototrophic Microorganisms, Algatech, Opatovický mlýn, 379 81 Třeboň, Czech Republic
2Faculty of Science, University of South Bohemia, Branišovská 31, 370 05 České Budeˇjovice, Czech Republic
3Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Alte Fischerhuette 2, Stechlin 16675, Germany

ABSTRACT: Glacial lakes cover large areas of northern Europe and North America. These freshwater systems represent important habitats accommodating diverse microbial communities. Here, 27 lakes in northern Germany, Poland and Finland were surveyed for the presence of aerobic anoxygenic phototrophic (AAP) bacteria during the summer seasons of 2008 and 2009. Using infrared epifluorescence microscopy, AAP bacteria were found to represent from 2 to 12% of total bacteria in surface layers of the studied lakes. The AAP abundance was correlated with total bacterial numbers, total phosphorus and chlorophyll concentration. The size fractionation analyses indicated that a significant portion of AAP cells was attached to particles. Our findings suggest that AAP bacteria represent a significant component of the microbial community in the studied lakes.

KEY WORDS: Lakes · Aerobic photosynthetic bacteria · AAP bacteria · Bacteriochlorophyll a · Photoheterotrophy

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Cite this article as: Mašín M, Čuperová Z, Hojerová E, Salka I, Grossart HP, Koblížek M (2012) Distribution of aerobic anoxygenic phototrophic bacteria in glacial lakes of northern Europe. Aquat Microb Ecol 66:77-86.

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