Diversity and abundance of sulfate-reducing microorganisms in a Mediterranean lagoonal complex (Amvrakikos Gulf, Ionian Sea) derived from dsrB gene
| Autor: | Katerina Vasileiadou, Michael W. Friedrich, G. Kotoulas, M. De Troch, Christina Pavloudi, Anastasis Oulas, Christos Arvanitidis |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Mediterranean climate Biodiversity Aquatic Science Deltaproteobacteria SEQUENCE 03 medical and health sciences DESULFOBACTERIUM-ANILINI Amvrakikos Gulf Ecosystem Ecology Evolution Behavior and Systematics dsrB gene biology Brackish water FRESH-WATER Ecology SPECIES RICHNESS Sediment Biology and Life Sciences Pyrosequencing SOUTHERN CHINA Lagoon biology.organism_classification PADDY SOIL 030104 developmental biology SULFITE REDUCTASE GENES Desulfobacteraceae BACTERIAL COMMUNITIES RIBOSOMAL-RNA Sulfate-reducing microorganisms SEDIMENTS |
| Zdroj: | AQUATIC MICROBIAL ECOLOGY |
| ISSN: | 0948-3055 1616-1564 |
| Popis: | Sulfate-reducing microorganisms (SRMs) are a phylogenetically and physiologically diverse group of microorganisms, responsible for the dissimilatory reduction of sulfate. SRMs thrive under anaerobic conditions with high availability of organic matter. Such conditions characterize lagoonal ecosystems which experience regular dystrophic crises. The aim of the present study was to explore the biodiversity patterns of SRMs and to examine the extent to which these patterns are associated with biogeographic and environmental factors. Sediment samples were collected from 5 lagoons in the Amvrakikos Gulf (Ionian Sea, western Greece). DNA was extracted from the sediment and was further processed through pyrosequencing of a region of the dissimilatory sulfite reductase β-subunit (dsrB). The results of this exploratory study show that the majority of the observed operational taxonomic units (OTUs) belong to the Deltaproteobacteria supercluster and more specifically, to the Desulfobacteraceae family. Salinity and ammonium ions are the environmental factors that best correlated with the SRM community pattern. Furthermore, the SRM community of the brackish lagoons is differentiated from that of the brackish-marine lagoons and the studied lagoons have distinct SRM communities. |
| Databáze: | OpenAIRE |
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