Biochemical and microbial features of shallow marine sediments along the Terra Nova Bay (Ross Sea, Antarctica)

Baldi, Franco; Marchetto, Davide; Pini, Francesco; Fani, Renato; Michaud, Luigi; Giudice, Angelina Lo; Berto, Daniela; Giani, Michele

doi:10.1016/j.csr.2010.06.009

Cited by 35 publications

(36 citation statements)

References 73 publications

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“…Members of Bacteroidetes have been implicated in algal organic matter processing59 and organic matter degradation in marine sediments6061. Since we observed a similar level of TOC in XSH as in the other zones, the availability and composition of organic matter should be estimated in future studies to examine the hypothesis that the organic matter in the XSH sediments could be more favorable for Bacteroidetes.…”

Section: Discussionmentioning

confidence: 99%

Regional variations in the diversity and predicted metabolic potential of benthic prokaryotes in coastal northern Zhejiang, East China Sea

Wang

Zhang

et al. 2016

Sci Rep

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Knowledge about the drivers of benthic prokaryotic diversity and metabolic potential in interconnected coastal sediments at regional scales is limited. We collected surface sediments across six zones covering ~200 km in coastal northern Zhejiang, East China Sea and combined 16 S rRNA gene sequencing, community-level metabolic prediction, and sediment physicochemical measurements to investigate variations in prokaryotic diversity and metabolic gene composition with geographic distance and under local environmental conditions. Geographic distance was the most influential factor in prokaryotic β-diversity compared with major environmental drivers, including temperature, sediment texture, acid-volatile sulfide, and water depth, but a large unexplained variation in community composition suggested the potential effects of unmeasured abiotic/biotic factors and stochastic processes. Moreover, prokaryotic assemblages showed a biogeographic provincialism across the zones. The predicted metabolic gene composition similarly shifted as taxonomic composition did. Acid-volatile sulfide was strongly correlated with variation in metabolic gene composition. The enrichments in the relative abundance of sulfate-reducing bacteria and genes relevant with dissimilatory sulfate reduction were observed and predicted, respectively, in the Yushan area. These results provide insights into the relative importance of geographic distance and environmental condition in driving benthic prokaryotic diversity in coastal areas and predict specific biogeochemically-relevant genes for future studies.

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Section: Discussionmentioning

confidence: 99%

Regional variations in the diversity and predicted metabolic potential of benthic prokaryotes in coastal northern Zhejiang, East China Sea

Wang

Zhang

et al. 2016

Sci Rep

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“…The predominance of the phylum Bacteroidetes is known in the previous studies of bacterial communities from marine sediments of Antarctica (Bowman and McCuaig, 2003;Baldi et al, 2010). In this study, 59% of total recovered isolates belonged to the phylum Bacteroidetes.…”

Section: Discussionmentioning

confidence: 61%

“…The bacterial community of Ross Sea sediments, as determined by T-RFLP analysis, revealed the predominance of bacteria belonging to Gammaproteobacteria, Deltaproteobacteria, Bacteroidetes, and Acidobacteria (Baldi et al, 2010). To the best of our knowledge, this is the first report on the diversity and physiological characteristics of culturable bacteria in Ross Sea sediments.…”

Section: Discussionmentioning

confidence: 84%

“…In the sediments from Ross Sea, Antarctica, both the spatial distribution of the organic matter composition and bacterial densities have been reported (Fabiano and Danovaro, 1998;Fabiano and Pusceddu, 1998;Pusceddu et al, 2000;Baldi et al, 2010). The bacterial community of Ross Sea sediments, as determined by T-RFLP analysis, revealed the predominance of bacteria belonging to Gammaproteobacteria, Deltaproteobacteria, Bacteroidetes, and Acidobacteria (Baldi et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

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Diversity and Physiological Characteristics of Culturable Bacteria from Marine Sediments of Ross Sea, Antarctica

Lee¹,

Jung²,

Hong³

et al. 2014

The Korean Journal of Microbiology

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The affiliations and physiological characteristics of culturable bacteria isolated from the sediments of Ross Sea, Antarctica were investigated. Sixty-three isolates obtained by cultivation were grouped into 21 phylotypes affiliated with the phyla Actinobacteria and Bacteroidetes and with the classes Alphaproteobacteria and Gammaproteobacteria by phylogenetic analysis of 16S rRNA gene sequences. Based on phylogenetic analysis (<98.65% sequence similarity), approximately 49% of total isolates represented potentially novel species or genus. Among them, extracellular protease, lipase, and exopolysaccharide activities at 10℃ or 20℃ were detected in approximately 46%, 25%, and 32% of the strains, respectively. Forty-three isolates produced at least one type of extracellular material and 21 of them produced at least two extracellular protease, lipase, and/or exopolysaccharides. Our findings indicate that culturable bacterial diversity present within the marine sediments of Ross Sea, Antarctica may contribute to the hydrolysis of the major organic constituents which is closely related with carbon and nitrogen cycling in this environment.

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“…CHO concentration was significantly higher than the Terra Nova Bay (Baldi et al, 2010), highly productive Northern Adriatic Sea and South Pacific whereas the PRT values were appreciably lower than the Southern Adriatic and Ionian Seas (Dell'Anno et al, 2002), Mediterranean coastal lagoon and South Pacific . LIP concentration measured is within the range reported for other marine areas.…”

Section: Comparison With Indian and Other Coastal Systemsmentioning

confidence: 80%

Evaluation of metal enrichment and trophic status on the basis of biogeochemical analysis of shelf sediments of the southeastern Arabian Sea, India

Cheriyan

Sreekanth

Mrudulrag

et al. 2015

Continental Shelf Research

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Biochemical and microbial features of shallow marine sediments along the Terra Nova Bay (Ross Sea, Antarctica)

Cited by 35 publications

References 73 publications

Regional variations in the diversity and predicted metabolic potential of benthic prokaryotes in coastal northern Zhejiang, East China Sea

Regional variations in the diversity and predicted metabolic potential of benthic prokaryotes in coastal northern Zhejiang, East China Sea

Diversity and Physiological Characteristics of Culturable Bacteria from Marine Sediments of Ross Sea, Antarctica

Evaluation of metal enrichment and trophic status on the basis of biogeochemical analysis of shelf sediments of the southeastern Arabian Sea, India

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