In situ analysis of phototrophic sulfur bacteria in the chemocline of meromictic Lake Cadagno (Switzerland).

Tonolla, Mauro and Demarta, Antonella and Peduzzi, Raffaele and Hahn, Dittmar (1999) In situ analysis of phototrophic sulfur bacteria in the chemocline of meromictic Lake Cadagno (Switzerland). Applied and Environmental Microbiology, 65 (3). pp. 1325-1330. ISSN 0099-2240

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Abstract

Comparative sequence analysis of a 16S rRNA gene clone library from the chemocline of the meromictic Lake Cadagno (Switzerland) revealed the presence of a diverse number of phototrophic sulfur bacteria. Sequences resembled those of rRNA of type strains Chromatium okenii DSM169 and Amoebobacter purpureus DSM4197, as well as those of four bacteria forming a tight cluster with A. purpureus DSM4197 and Lamprocystis roseopersicina DSM229. In situ hybridization with fluorescent (Cy3 labeled) oligonucleotide probes indicated that all large-celled phototrophic sulfur bacteria in the chemocline of Lake Cadagno were represented by C. okenii DSM169, while small-celled phototrophic sulfur bacteria consisted of four major populations with different distribution profiles in the chemocline indicating different ecophysiological adaptations.

Item Type:	Scientific journal article, Newspaper article or Magazine article
Subjects:	Biological Sciences > Microbiology > Microbiology not elsewhere classified
Depositing User:	Mauro Tonolla
Date Deposited:	18 Jan 2016 08:47
Last Modified:	30 Aug 2016 13:13
URI:	http://repository.supsi.ch/id/eprint/6914

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