Phylogenie und Diversität grüner Schwefelbakterien

Alexander, Boris (2002) Phylogenie und Diversität grüner Schwefelbakterien (Doctoral thesis/PhD), Christian-Albrechts-Universität, Kiel, Germany, 163 pp

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The phylogeny of green sulfur bacteria (GSB) was studied on the basis of nucleotide sequences. Primers were constructed that allowed sequence analysis of the fmoA gene and his deduced amino acid sequences (FMO). On 16S rDNA basis a primer specific for GSB was developed. The largely congruent phylogenetic relationship of 16S rDNA, fmoA and FMO sequences gives considerable support to the phylogeny of GSB. Five distinct groups of strains were recognized and supported by the comparison of GC contents and salt dependence of strains. The resulting phylogenetic grouping of the GSB does not correlate with their current taxonomic classification. The aim of the present studies were also the analysis of natural communities. The strategy involves procedures which were adapted from the methods well-tried with pure cultures. The results give considerable support that the diversity of salt dependent GSB in the investigated habitats is not substantially greater than it is represented by the pure cultures. Furthermore, the salt dependent species seem to be cosmopolitical.

Document Type: Thesis (Doctoral thesis/PhD)
Thesis Advisors: Imhoff, Johannes F. and Schönheit, Peter
Keywords: Microbiology; Grüne Schwefelbakterien ; Phylogenie ; Artenreichtum ; Mikrobiologie Phylogeny, Diversity, Green Sulfur Bacteria, Chlorobiaceae, Chlorobium, Fenna-Matthews-Olson-Protein, fmoA, FMO, 16S rDNA
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-MI Marine Microbiology
Refereed: No
Date Deposited: 18 Feb 2008 17:25
Last Modified: 06 Jul 2012 14:58

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