Evidence map›Paper›PMID 25999928›Full record

ArticleFrontiers in microbiology2015

The antimicrobial activity of heterotrophic bacteria isolated from the marine sponge Erylus deficiens (Astrophorida, Geodiidae).

Ana Patrícia Graça, Flávia Viana, Joana Bondoso, Maria Inês Correia, Luis Gomes, Madalena Humanes, Alberto Reis, Joana R Xavier, Helena Gaspar, Olga M Lage

Abstract read
In one paragraph

Article in Frontiers in microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed.

  1. Article
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  5. Biosynthetic mechanism of the yellow pigments in the marine bacteriumApplied and environmental microbiology · 2024
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  12. Diversity of endophytic bacteria of mulberry (Frontiers in microbiology · 2022
    Article
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  15. Article
  16. Review
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  18. AApplied and environmental microbiology · 2021
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Ana Patrícia GraçaDepartment of Biology, Faculty of Sciences, University of Porto Porto, Portugal ; Centre of Marine and Environmental Research (CIIMAR) Porto, Portugal.
Flávia VianaDepartment of Biology, Faculty of Sciences, University of Porto Porto, Portugal ; Centro de Química e Bioquímica e Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa Lisboa, Portugal.
Joana BondosoDepartment of Biology, Faculty of Sciences, University of Porto Porto, Portugal ; Centre of Marine and Environmental Research (CIIMAR) Porto, Portugal.
Maria Inês CorreiaDepartment of Biology, Faculty of Sciences, University of Porto Porto, Portugal.
Luis GomesDepartment of Biology, Faculty of Sciences, University of Porto Porto, Portugal.
Madalena HumanesCentro de Química e Bioquímica e Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa Lisboa, Portugal.
Alberto ReisBioenergy Unit, National Laboratory for Energy and Geology I.P. Lisboa, Portugal.
Joana R XavierDepartment of Biology and Centre for Geobiology, University of Bergen Bergen, Norway.
Helena GasparCentro de Química e Bioquímica e Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa Lisboa, Portugal.
Olga M LageDepartment of Biology, Faculty of Sciences, University of Porto Porto, Portugal ; Centre of Marine and Environmental Research (CIIMAR) Porto, Portugal.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Interest in the study of marine sponges and their associated microbiome has increased both for ecological reasons and for their great biotechnological potential. In this work, heterotrophic bacteria associated with three specimens of the marine sponge Erylus deficiens, were isolated in pure culture, phylogenetically identified and screened for antimicrobial activity. The isolation of bacteria after an enrichment treatment in heterotrophic medium revealed diversity in bacterial composition with only Pseudoalteromonas being shared by two specimens. Of the 83 selected isolates, 58% belong to Proteobacteria, 23% to Actinobacteria and 19% to Firmicutes. Diffusion agar assays for bioactivity screening against four bacterial strains and one yeast, revealed that a high number of the isolated bacteria (68.7%) were active, particularly against Candida albicans and Vibrio anguillarum. Pseudoalteromonas, Microbacterium, and Proteus were the most bioactive genera. After this preliminary screening, the bioactive strains were further evaluated in liquid assays against C. albicans, Bacillus subtilis and Escherichia coli. Filtered culture medium and acetone extracts from three and 5 days-old cultures were assayed. High antifungal activity against C. albicans in both aqueous and acetone extracts as well as absence of activity against B. subtilis were confirmed. Higher levels of activity were obtained with the aqueous extracts when compared to the acetone extracts and differences were also observed between the 3 and 5 day-old extracts. Furthermore, a low number of active strains was observed against E. coli. Potential presence of type-I polyketide synthases (PKS-I) and non-ribosomal peptide synthetases (NRPSs) genes were detected in 17 and 30 isolates, respectively. The high levels of bioactivity and the likely presence of associated genes suggest that Erylus deficiens bacteria are potential sources of novel marine bioactive compounds.

Indexed as

bioactivity screening assayCandida albicansErylus deficiensPKS-I and NRPS genessponge associated heterotrophic bacteria

Identifiers

PMID25999928
PMCPMC4423441

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.