Temporal changes in community composition of heterotrophic bacteria during in situ iron enrichment in the western subarctic Pacific (SEEDS-II)

Kataoka, Takafumi; Suzuki, Koji; Hayakawa, Maki; Kudo, Isao; Higashi, Seigo; Tsuda, Atsushi

doi:10.1016/j.dsr2.2009.06.013

Cited by 12 publications

(12 citation statements)

References 65 publications

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“…Arrieta et al (2004) also reported relatively stable bacterial community composition inside and outside the iron-enriched patch, during in situ ironfertilization experiment carried out in the Southern Ocean. However, results from this study are similar to those of Becquevort et al (2007), Eldridge et al (2007) and Kataoka et al (2009). Becquevort et al (2007) observed significant difference in bacterial community structure between low-Fe and high-Fe amended microcosms.…”

Section: Effect On Bacterial Community Compositionsupporting

confidence: 88%

“…However, omics' technologies have revealed that these bacteria harbor adaptive traits that could promote their dispersion beyond low temperature locations (Methe et al, 2005;Cacace et al, 2010). They play fundamental role in biogeochemical cycles and are important biotechnologically for cold adapted enzymes production (Feller &Gerday, 2003).The Roseobacter clade is reported to preferentially use phytoplankton products (Moran et al, 2002;Grossart et al, 2005;Howard et al, 2006) and are often reported during Iron enrichment experiments (Kataoka et al, 2009;Thiele et al, 2012). The members of Bacillus genus are often reported from terrestrial environment.…”

Section: Phylogenetic Characterization Of Dgge Bands From Microcosm Ementioning

confidence: 98%

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Response of bacteria and phytoplankton from a subtropical front location Southern Ocean to micronutrient amendments ex-situ.

Ramaiah¹,

Jain²,

Meena³

et al. 2015

Deep Sea Research Part II: Topical Studies in Oceanography

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Section: Effect On Bacterial Community Compositionsupporting

confidence: 88%

Section: Phylogenetic Characterization Of Dgge Bands From Microcosm Ementioning

confidence: 98%

Response of bacteria and phytoplankton from a subtropical front location Southern Ocean to micronutrient amendments ex-situ.

Ramaiah¹,

Jain²,

Meena³

et al. 2015

Deep Sea Research Part II: Topical Studies in Oceanography

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“…6A), it is possible that they were brought to the water column from reduced sediments. In the clade of Alphaproteobacteria, all 9 sequences clustered with marine Rhodobacteraceae bacteria and none of them related to SAR11, which is considered to be the most abundant phylogenetic group in the sea (Morris et al 2002) and has been detected in the western North Pacific Ocean (Kataoka et al 2009b). The reason that sequences belonging to the SAR11 group were not detected in the present study is very likely due to methodological limitation (Sánchez et al 2009).…”

Section: Phylogenetic Composition Of Bacteria and Archaeacontrasting

confidence: 52%

“…Although Bacteroidetes were not detected in the Oyashio, Kuroshio, and OyashioKuroshio transition regions of the western North Pacific Ocean (Kataoka et al 2009a), they were often observed in the Western Subarctic Gyre during an in situ iron fertilization experiment in summer (Kataoka et al 2009b). From the Bacteroidetes sequences we found, 11 sequences were grouped with uncultured Bacteroidetes clones obtained in Monterey Bay, Arctic Ocean, or with marine Bacteroidetes isolates (Nedashkovskaya et al 2003); 4 other sequences were related to uncultured Flavobacteria clones obtained from the North Sea (Alonso et al 2007).…”

Section: Phylogenetic Composition Of Bacteria and Archaeamentioning

confidence: 87%

Community compositions of Bacteria and Archaea in the Sea of Okhotsk during summer

Jing¹,

Liu²,

Suzuki³

et al. 2010

Aquat. Microb. Ecol.

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We investigated spatial variations of the bacterial and archaeal community composition in surface waters of the Sea of Okhotsk during summer of 2006, using denaturing gradient gel electrophoresis (DGGE). We determined phylogenetic assemblages, including Actinobacteria, Bacteroidetes, Cyanobacteria, Alpha-and Gammaproteobacteria, and Marine Group II Euryarchaea, and successfully revealed their spatial distribution patterns. At most stations, Bacteria had higher diversity than Archaea, indicated by the relatively higher Shannon-Weaver indexes and numbers of operational taxonomic units (OTUs). Canonical correspondence analysis (CCA) and redundancy analysis (RDA) demonstrated that the community compositions of bacterial populations in the Sea of Okhotsk were closely associated with total prokaryote abundance, while the spatial distributions of bacterial phylogenetic groups were more related to both the concentration of dissolved organic nitrogen (DON) and the ratio of DON versus dissolved organic carbon concentration (DOC:DON). On the other hand, the spatial variation of the community composition of Archaea had no significant association with environmental parameters.KEY WORDS: Phylogenetic diversity · Bacteria · Archaea · Okhotsk Sea · Canonical correspondence analysis · CCA · Redundancy analysis · RDA : 191-204, 2010 considerable functional and biogeochemical diversity within the chemoautotrophic (Wuchter et al. 2003) and heterotrophic (Ouverney & Fuhrman 2000, Teira et al. 2004) planktonic marine Archaea have been revealed. Resale or republication not permitted without written consent of the publisherAquat Microb Ecol 61Although there is a growing number of studies investigating microbial diversity and composition in various oceanic regions, the understanding of biotic and abiotic factors that drive the composition and distribution patterns of the microbial communities is still scarce. Strong relationships between the variability of prokaryotic community composition and population shifts in microzooplankton and among viruses have been demonstrated in previous studies (Winter et al. 2004, Jing et al. 2009), while associations between microbial community structure and environmental factors have been explored under various oceanic conditions (Herfort et al. 2007, Ghiglione et al. 2008. Little horizontal variation in bacterioplankton community was found among stations just a few kilometers apart (near the Anvers Island in the Antarctic; Murray et al. 1998) and 1500 km apart (in the Arabian Sea; Riemann et al. 1999), whereas significant variation was observed along the coast of the NW Mediterranean Sea (Schauer et al. 2000).The Sea of Okhotsk is one of the marginal seas of the North Pacific Ocean. Although the Sea is geographically located at a temperate latitude, it has many characteristics of a polar ocean, namely, large seasonal variation in water temperatures (~14°C) and large amounts of sea ice along the Siberian coast over the northwestern continental shelf of the east coast of Sakhalin Island ever...

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“…Flavobacteria and in particular Polaribacter are frequently found in polar waters, especially during phytoplankton blooms (Abell and Bowman, 2005;Straza et al, 2010), including blooms resulting from artificial iron-fertilization experiments (Agawin et al, 2006;Kataoka et al, 2009). Flavobacteria were described to be efficient polymer degraders (Cottrell and Kirchman, 2000), an idea that is supported from recent genomic and proteomic analyses (Williams et al, 2013;Xing et al, 2014).…”

Section: Diverse Bacterial Responses To Iron-induced Phytoplankton Blmentioning

confidence: 61%

Shifts in bacterial community composition associated with increased carbon cycling in a mosaic of phytoplankton blooms

et al. 2015

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Marine microbes have a pivotal role in the marine biogeochemical cycle of carbon, because they regulate the turnover of dissolved organic matter (DOM), one of the largest carbon reservoirs on Earth. Microbial communities and DOM are both highly diverse components of the ocean system, yet the role of microbial diversity for carbon processing remains thus far poorly understood. We report here results from an exploration of a mosaic of phytoplankton blooms induced by large-scale natural iron fertilization in the Southern Ocean. We show that in this unique ecosystem where concentrations of DOM are lowest in the global ocean, a patchwork of blooms is associated with diverse and distinct bacterial communities. By using on-board continuous cultures, we identify preferences in the degradation of DOM of different reactivity for taxa associated with contrasting blooms. We used the spatial and temporal variability provided by this natural laboratory to demonstrate that the magnitude of bacterial production is linked to the extent of compositional changes. Our results suggest that partitioning of the DOM resource could be a mechanism that structures bacterial communities with a positive feedback on carbon cycling. Our study, focused on bacterial carbon processing, highlights the potential role of diversity as a driving force for the cycling of biogeochemical elements.

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Temporal changes in community composition of heterotrophic bacteria during in situ iron enrichment in the western subarctic Pacific (SEEDS-II)

Cited by 12 publications

References 65 publications

Response of bacteria and phytoplankton from a subtropical front location Southern Ocean to micronutrient amendments ex-situ.

Response of bacteria and phytoplankton from a subtropical front location Southern Ocean to micronutrient amendments ex-situ.

Community compositions of Bacteria and Archaea in the Sea of Okhotsk during summer

Shifts in bacterial community composition associated with increased carbon cycling in a mosaic of phytoplankton blooms

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