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Particle-associated and free-living bacterial communities in an oligotrophic sea are affected by different environmental factors.
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SYSNO ASEP 0552462 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Particle-associated and free-living bacterial communities in an oligotrophic sea are affected by different environmental factors. Author(s) Rosenberg, R.D. (IL)
Haber, Markus (BC-A) RID
Goldford, J. (US)
Lalzar, M. (IL)
Aharonovich, D. (IL)
Al-Ashhab, A. (IL)
Lehahn, Y. (IL)
Segre, D. (US)
Steindler, L. (IL)
Sher, D. (IL)Number of authors 10 Source Title Environmental Microbiology. - : Wiley - ISSN 1462-2912
Roč. 23, č. 8 (2021), s. 4295-4308Number of pages 14 s. Language eng - English Country GB - United Kingdom Keywords microbial communities ; carbon export ; ocean ; phytoplankton ; phosphorus ; prochlorococcus ; abundance ; patterns ; pollutants ; diversity Subject RIV EE - Microbiology, Virology OECD category Microbiology Method of publishing Limited access Institutional support BC-A - RVO:60077344 UT WOS 000659728000001 EID SCOPUS 85107506220 DOI 10.1111/1462-2920.15611 Annotation In the oceans and seas, environmental conditions change over multiple temporal and spatial scales. Here, we ask what factors affect the bacterial community structure across time, depth and size fraction during six seasonal cruises (2 years) in the ultra-oligotrophic Eastern Mediterranean Sea. The bacterial community varied most between size fractions (free-living (FL) vs. particle-associated), followed by depth and finally season. The FL community was taxonomically richer and more stable than the particle-associated (PA) one, which was characterized by recurrent 'blooms' of heterotrophic bacteria such as Alteromonas and Ralstonia. The heterotrophic FL and PA communities were also correlated with different environmental parameters: the FL population correlated with depth and phytoplankton, whereas PA bacteria were correlated primarily with the time of sampling. A significant part of the variability in community structure could, however, not be explained by the measured parameters. The metabolic potential of the PA community, predicted from 16S rRNA amplicon data using PICRUSt, was enriched in pathways associated with the degradation and utilization of biological macromolecules, as well as plastics, other petroleum products and herbicides. The FL community was enriched in predicted pathways for the metabolism of inositol phosphate, a potential phosphorus source, and of polycyclic aromatic hydrocarbons. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2022 Electronic address https://doi.org/10.1111/1462-2920.15611
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