Microbial mechanisms coupling carbon and phosphorus cycles in phosphorus-limited northern Adriatic Sea

Malfatti, Francesca; Turk, Valentina; Tinta, Tinkara; Mozetič, Patricija; Manganelli, Maura; Samo, Ty; Ugalde, Juan A.; Kovač, Nives; Stefanelli, Mara; Antonioli, Marta; Fonda-Umani, S.; Negro, Paola Del; Cataletto, Bruno; Hozić, Amela; DeNardis, Nadica Ivošević; Žutić, Vera; Svetličić, Vesna; Radić, Tomislav; Fuks, Dragica; Azam, Farooq

doi:10.1016/j.scitotenv.2013.10.040

Cited by 15 publications

(10 citation statements)

References 73 publications

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“…, Supporting Information http://onlinelibrary.wiley.com/doi/10.1111/1462-2920.12519/suppinfo). Our results confirmed the importance of phosphorous for the functioning of this coastal ecosystem, as it has been previously suggested from long‐term oceanographic studies (Solidoro et al ., ; Mozetič et al ., ) and mesocosm experiments (Turk et al ., ; Fajon et al ., ; Malej et al ., ; Sjöstedt et al ., ; Malfatti et al ., ).…”

Section: Discussionmentioning

confidence: 97%

Bacterial community shift is induced by dynamic environmental parameters in a changing coastal ecosystem (northern Adriatic, northeastern Mediterranean Sea) – a 2‐year time‐series study

Tinta

Vojvoda

Mozetič

et al. 2014

Environmental Microbiology

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The potential link between the microbial dynamics and the environmental parameters was investigated in a semi-enclosed and highly dynamic coastal system (Gulf of Trieste, northern Adriatic Sea, NE Mediterranean Sea). Our comprehensive 2-year time-series study showed that despite the shallowness of this area, there was a significant difference between the surface and the bottom bacterial community structure. The bottom bacterial community was more diverse than the surface one and influenced by sediment re-suspension. The surface seawater temperature had a profound effect on bacterial productivity, while the bacterial community structure was more affected by freshwater-borne nutrients and phytoplankton blooms. Phytoplankton blooms caused an increase of Gammaproteobacteria (Alteromonadaceae, SAR86 and Vibrionaceae) and shift in dominance from SAR11 to Rhodobacteraceae taxon at the surface. Our results propose the importance of the water mass movements as drivers of freshwater-borne nutrients and of allochthonous microbial taxa. This study emphasizes the prediction power based on association networks analyses that are fed with long-term measurements of microbial and environmental parameters. These interaction maps offer valuable insights into the response of marine ecosystem to climate- and anthropogenic-driven stressors.

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Section: Discussionmentioning

confidence: 97%

Bacterial community shift is induced by dynamic environmental parameters in a changing coastal ecosystem (northern Adriatic, northeastern Mediterranean Sea) – a 2‐year time‐series study

Tinta

Vojvoda

Mozetič

et al. 2014

Environmental Microbiology

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“…Interestingly, a study of an algal bloom in the North Sea discovered a decrease of OTU richness in the bloom area 27 , in full accordance with this hypothesis. In a mesocosm experiment a loss of rare OTUs was found upon experimental fertilization 28 . During a bloom of the dinoflagellate Akashiwo sanguine in the Xiamen Sea in China the diversity of free-living bacteria was also clearly reduced compared to the control area 29 .…”

Section: Discussionmentioning

confidence: 98%

Low diversity of planktonic bacteria in the tropical ocean

Milici

Tomasch

Wos‐Oxley

et al. 2016

Sci Rep

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The diversity of macro-organisms increases towards the equator, with almost no exceptions. It is the most conserved biogeographical pattern on earth and is thought to be related to the increase of temperature and productivity in the tropics. The extent and orientation of a latitudinal gradient of marine bacterioplankton diversity is controversial. Here we studied the euphotic zone of the Atlantic Ocean based on a transect covering ~12.000 km from 51°S to 47 °N. Water samples were collected at 26 stations at five depths between 20 and 200 m and sequentially filtered through 8 μm, 3 μm and 0,22 μm filters, resulting in a total of 359 samples. Illumina sequencing of the V5–V6 region of the 16S rRNA gene revealed a clear biogeographic pattern with a double inverted latitudinal gradient. Diversity was higher in mid-latitudinal regions of the Atlantic Ocean and decreased towards the equator. This pattern was conserved for bacteria from all three planktonic size fractions. Diversity showed a non-linear relationship with temperature and was negatively correlated with bacterial cell numbers in the upper depth layers (<100 m). The latitudinal gradients of marine bacterial diversity and the mechanisms that govern them are distinct from those found in macro-organisms.

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“…For example, in the oxygen minimum zone (OMZ) of the Eastern Tropical North Pacific, particles contribute 100% of the activity reducing nitrate to nitrite and 53 to 85% of N 2 production by denitrification and anammox (167). P cycling processes such as eDNA secretion (168,169) and particulate organic phosphorus degradation (153,170,171) are enhanced on marine particles, as are microbial S cycling activities such as sulfate reduction (133,141,147,153,172), sulfur oxidation (133,(146)(147)(148)153), and organic S compound (e.g., the algal osmolyte dimethylsulfoniopropionate [DMSP]) transformation and degradation (153,(173)(174)(175). As noted above, surface-and particle-associated microorganisms also contribute substantially to marine iron cycling processes, such as iron oxidation and reduction (78, 147, 176-178), siderophore-mediated iron solubilization and uptake (153,(179)(180)(181), iron transport among different oceanic environments (182), and biocorrosion (18, 69, 72, 81).…”

Section: Physiological Challenges and Deleterious Effects Of Microbiamentioning

confidence: 99%

Microbial Surface Colonization and Biofilm Development in Marine Environments

Dang

Lovell

2016

Microbiol Mol Biol Rev

870

636

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SUMMARYBiotic and abiotic surfaces in marine waters are rapidly colonized by microorganisms. Surface colonization and subsequent biofilm formation and development provide numerous advantages to these organisms and support critical ecological and biogeochemical functions in the changing marine environment. Microbial surface association also contributes to deleterious effects such as biofouling, biocorrosion, and the persistence and transmission of harmful or pathogenic microorganisms and their genetic determinants. The processes and mechanisms of colonization as well as key players among the surface-associated microbiota have been studied for several decades. Accumulating evidence indicates that specific cell-surface, cell-cell, and interpopulation interactions shape the composition, structure, spatiotemporal dynamics, and functions of surface-associated microbial communities. Several key microbial processes and mechanisms, including (i) surface, population, and community sensing and signaling, (ii) intraspecies and interspecies communication and interaction, and (iii) the regulatory balance between cooperation and competition, have been identified as critical for the microbial surface association lifestyle. In this review, recent progress in the study of marine microbial surface colonization and biofilm development is synthesized and discussed. Major gaps in our knowledge remain. We pose questions for targeted investigation of surface-specific community-level microbial features, answers to which would advance our understanding of surface-associated microbial community ecology and the biogeochemical functions of these communities at levels from molecular mechanistic details through systems biological integration.

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Microbial mechanisms coupling carbon and phosphorus cycles in phosphorus-limited northern Adriatic Sea

Cited by 15 publications

References 73 publications

Bacterial community shift is induced by dynamic environmental parameters in a changing coastal ecosystem (northern Adriatic, northeastern Mediterranean Sea) – a 2‐year time‐series study

Bacterial community shift is induced by dynamic environmental parameters in a changing coastal ecosystem (northern Adriatic, northeastern Mediterranean Sea) – a 2‐year time‐series study

Low diversity of planktonic bacteria in the tropical ocean

Microbial Surface Colonization and Biofilm Development in Marine Environments

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