20.500.12556/DiRROS-20011 Seasonal variation in marine-snow-associated and ambient-water prokaryotic communities in the northern Adriatic Sea The structure and activity of prokaryotic communities were determined in marine snow and in the ambient water of the northern Adriatic Sea in different seasons (autumn, spring and summer). The seasonal variation in the composition of marine-snow-associated and ambient-water bacterial communities was assessed by T-RFLP (Terminal Restriction Fragment Length Polymorphism) on the 16S rRNA gene (16S rDNA) and 16S rRNA transcript (16S rRNA) level. On the 16S rDNA level, the bacterial community composition of the marine snow and ambient water was similar in summer and autumn, but not in spring. In contrast, on the 16S rRNA level, indicative of the active bacterial community, the marine-snow-associated bacterial community was different from that of the ambient-water, and different from the bacterial community on the 16S rDNA level, except in autumn. To phylogenetically characterize the bacterial and archaeal community composition associated with marine snow and the ambient water, clone libraries of 16S rDNA and 16S rRNA were constructed from 2 contrasting seasons. Phylogenetic profiling revealed a higher similarity among bacterial communities in summer compared to late autumn. Certain bacterial and archaeal groups were exclusively associated with summer or autumn marine snow, suggesting that marine-snow-associated prokaryotic communities are subjected to successional changes similar to ambient-water communities. Moreover, the presence of bacterial groups enriched in marine snow including Vibrionales and sulphate-reducing bacteria is consistent with niche partitioning and metabolic adaptations of the particle-associated microbiota. marine snow free-living-bacteria Northern Adriatic sea bakterije morje morski sneg bakterioplankton Jadransko morje eksperimentalna mikrobiologija mikrobna ekologija true false true Angleški jezik Slovenski jezik Neznano 2024-08-02 08:41:54 2024-08-02 08:41:54 2024-08-03 03:45:58 0000-00-00 00:00:00 2014 0 0 Izv. znanstv. članki; Sprejeto v tisk 18. avg. 2014; obj. online 11. nov. 2014; str. 211-224 vol. 73 2014 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2014-11-11 579 1616-1564 10.3354/ame01718 3243855 a073p211.pdf a073p211.pdf 1 87C74508B98D3F532FCF03E4FB6F0D73 34bd7574abb1596905d1e398097d172bc16b2447a97684f1543e0a3ccf734ea6 8bfac77b-5089-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=27830 RAZ_Vojvoda_Jana_2014.pdf RAZ_Vojvoda_Jana_2014.pdf 1 87C74508B98D3F532FCF03E4FB6F0D73 34bd7574abb1596905d1e398097d172bc16b2447a97684f1543e0a3ccf734ea6 265d0637-508a-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=27831 https://doi.org/10.3354/ame01718 0 32719516-508a-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=27832 Nacionalni inštitut za biologijo 0 0 0