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Diversity of Bacteria in the Marine Sponge Aplysina fulva in Brazilian Coastal Waters

Authors: Hardoim, C. C. P.; Costa, R.; Araujo, F. V.; Hajdu, E.; Peixoto, R.; Lins, U.; Rosado, A. S.; +1 Authors

Diversity of Bacteria in the Marine Sponge Aplysina fulva in Brazilian Coastal Waters

Abstract

Microorganisms can account for up to 60% of the fresh weight of marine sponges. Marine sponges have been hypothesized to serve as accumulation spots of particular microbial communities, but it is unknown to what extent these communities are directed by the organism or the site or occur randomly. To address this question, we assessed the composition of specific bacterial communities associated with Aplysina fulva, one of the prevalent sponge species inhabiting Brazilian waters. Specimens of A. fulva and surrounding seawater were collected in triplicate in shallow water at two sites, Caboclo Island and Tartaruga beach, Buzios, Brazil. Total community DNA was extracted from the samples using "direct" and "indirect" approaches. 16S rRNA-based PCR-denaturing gradient gel electrophoresis (PCR-DGGE) analyses of the total bacterial community and of specific bacterial groups-Pseudomonas and Actinobacteria-revealed that the structure of these assemblages in A. fulva differed drastically from that observed in seawater. The DNA extraction methodology and sampling site were determinative for the composition of actinobacterial communities in A. fulva. However, no such effects could be gleaned from total bacterial and Pseudomonas PCR-DGGE profiles. Bacterial 16S rRNA gene clone libraries constructed from directly and indirectly extracted DNA did not differ significantly with respect to diversity and composition. Altogether, the libraries encompassed 15 bacterial phyla and the candidate division TM7. Clone sequences affiliated with the Cyanobacteria, Chloroflexi, Gamma-and Alphaproteobacteria, Actinobacteria, Bacteroidetes, and Acidobacteria were, in this order, most abundant. The bacterial communities associated with the A. fulva specimens were distinct and differed from those described in studies of sponge-associated microbiota performed with other sponge species.

Soil Biotechnology Foundation, Wageningen, The Netherlands; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico; Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro

info:eu-repo/semantics/publishedVersion

Countries
Portugal, Netherlands
Subjects by Vocabulary

Microsoft Academic Graph classification: Aplysina fulva Bacterial phyla media_common biology Ecology Anaerobic bacteria Candidate division TM7 media_common.quotation_subject Zoology Actinobacteria Alphaproteobacteria Bacteroidetes biology.organism_classification Sponge Bacteria Diversity (politics) Acidobacteria

Keywords

Author's Correction, Cyanobacterial Symbiont, Anaerobic-bacteria, Applied Microbiology and Biotechnology, Soil, RNA, Ribosomal, 16S, Cluster Analysis, PHYLOGENETIC ANALYSIS, Polyketide synthase genes, Phylogeny, Phylogenetic analysis, Ecology, MICROBIAL COMMUNITY, 16S RIBOSOMAL-RNA, Biodiversity, Porifera, RNA, Bacterial, ANTIMICROBIAL ACTIVITIES, Mediterranean sponges, Brazil, Biotechnology, DNA, Bacterial, Antimicrobial activities, Molecular Sequence Data, DNA, Ribosomal, Microbial Ecology, MEDITERRANEAN SPONGES, Sequence Homology, Nucleic Acid, ANAEROBIC-BACTERIA, Microbial community, 16S Ribosomal-Rna, Animals, CYANOBACTERIAL SYMBIONT, Seawater, Bacteria, POLYKETIDE SYNTHASE GENES, Genes, rRNA, Sequence Analysis, DNA, DNA Fingerprinting, Pseudoceratina-Clavata, SOIL, PSEUDOCERATINA-CLAVATA, Food Science

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    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    75
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
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