Diversity of bacteria and archaea from two shallow marine hydrothermal vents from Vulcano Island

• Published in: Extremophiles : life under extreme conditions 2017-07, Vol.21 (4), p.733-742
• Main Authors: Antranikian, Garabed, Suleiman, Marcel, Schäfers, Christian, Adams, Michael W. W., Bartolucci, Simonetta, Blamey, Jenny M., Birkeland, Nils-Kåre, Bonch-Osmolovskaya, Elizaveta, da Costa, Milton S., Cowan, Don, Danson, Michael, Forterre, Patrick, Kelly, Robert, Ishino, Yoshizumi, Littlechild, Jennifer, Moracci, Marco, Noll, Kenneth, Oshima, Tairo, Robb, Frank, Rossi, Mosè, Santos, Helena, Schönheit, Peter, Sterner, Reinhard, Thauer, Rudolf, Thomm, Michael, Wiegel, Jürgen, Stetter, Karl Otto
• Format: Article
• Language: English
• Subjects: Abundance; Analytical methods; Archaea; Archaea - classification; Archaea - genetics; Bacteria; Bacteria - classification; Bacteria - genetics; Biochemistry; Biodiversity; Biomedical and Life Sciences; Biotechnology; Carbon; Carbon sources; Cellulose; Combinatorial analysis; Communities; Community composition; Cultures; Electrophoresis; Enrichment; Gel electrophoresis; Gels; Growth; Hydrothermal plumes; Hydrothermal springs; Hydrothermal vents; Hydrothermal Vents - microbiology; Hyperthermophilic archaea; Islands; Italy; Life Sciences; Marine Biology; Microbial Ecology; Microbiological strains; Microbiology; Microorganisms; Original Paper; Polysaccharides; RNA, Ribosomal, 16S - genetics; Saccharides; Sediment; Sequencing; Space life sciences; Starch; Temperature; Temperature effects; Thermal energy; Vents; Water analysis; Water sampling
• ISSN: 1431-0651; 1433-4909
• DOI: 10.1007/s00792-017-0938-y

To obtain new insights into community compositions of hyperthermophilic microorganisms, defined as having optimal growth temperatures of 80 °C and above, sediment and water samples were taken from two shallow marine hydrothermal vents (I and II) with temperatures of 100 °C at Vulcano Island, Italy. A combinatorial approach of denaturant gradient gel electrophoresis (DGGE) and metagenomic sequencing was used for microbial community analyses of the samples. In addition, enrichment cultures, growing anaerobically on selected polysaccharides such as starch and cellulose, were also analyzed by the combinatorial approach. Our results showed a high abundance of hyperthermophilic archaea, especially in sample II, and a comparable diverse archaeal community composition in both samples. In particular, the strains of the hyperthermophilic anaerobic genera Staphylothermus and Thermococcus , and strains of the aerobic hyperthermophilic genus Aeropyrum , were abundant. Regarding the bacterial community, ε- Proteobacteria , especially the genera Sulfurimonas and Sulfurovum , were highly abundant. The microbial diversity of the enrichment cultures changed significantly by showing a high dominance of archaea, particularly the genera Thermococcus and Palaeococcus , depending on the carbon source and the selected temperature.