Settlement inhibition of marine biofilm bacteria and barnacle larvae by compounds isolated from the Mediterranean brown alga Taonia atomaria

Othmani, Ahlem; Bunet, Robert; Bonnefont, Jean-Luc; Briand, Jean‐François; Culioli, Gérald

doi:10.1007/s10811-015-0668-4

Cited by 42 publications

(49 citation statements)

References 82 publications

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“…Thalli of T. atomaria were collected in triplicate at the same site from the infratidal zone, each month during the presence of alga from February to July. After the selective extraction of surface compounds using a previously reported specific protocol (Othmani et al ., 2016a,b), the resulting samples were analysed by LC–MS (See chemical profiles in the Supporting Information Fig. S2).…”

Section: Resultsmentioning

confidence: 99%

“…In addition, attention was focused on annotated compounds [compounds previously detected at the surface of the thalli of T. atomaria (Othmani et al ., 2016a,b) or already studied in previous ecological studies (e.g. fucoxanthin, mannitol)], in order to evaluate their temporal fluctuations (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The surface metabolome of samples of T. atomaria was obtained by a dipping method using methanol as an extraction solvent (Othmani et al ., 2016a,b) (see Supporting Information for more details). A surface of approximately 10–12 cm 2 of one frond for each individual thallus was extracted for each month.…”

Section: Methodsmentioning

confidence: 99%

“…This intertidal seaweed, widely reported along the Mediterranean and North‐Eastern Atlantic coasts, presents a flat thallus appropriate for surface microbiota investigations. In addition, T. atomaria has been previously shown to produce compounds with antifouling properties (Othmani et al ., 2016a,b). Some of these active molecules, such as sn‐3‐ O ‐(geranylgeranyl)glycerol or (−)‐gleenol (Supporting Information Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Some of these active molecules, such as sn‐3‐ O ‐(geranylgeranyl)glycerol or (−)‐gleenol (Supporting Information Fig. S1), are exuded at its surface and could be involved in the selection of specific epibacterial communities (Othmani et al ., 2016a,b).…”

Section: Introductionmentioning

confidence: 99%

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Temporal covariation of epibacterial community and surface metabolome in the Mediterranean seaweed holobiont Taonia atomaria

Paix

Othmani

Debroas

et al. 2019

Environmental Microbiology

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Summary An integrative multi‐omics approach allowed monthly variations for a year of the surface metabolome and the epibacterial community of the Mediterranean Phaeophyceae Taonia atomaria to be investigated. The LC–MS‐based metabolomics and 16S rDNA metabarcoding data sets were integrated in a multivariate meta‐omics analysis (multi‐block PLS‐DA from the MixOmic DIABLO analysis) showing a strong seasonal covariation (Mantel test: p < 0.01). A network based on positive and negative correlations between the two data sets revealed two clusters of variables, one relative to the ‘spring period’ and a second to the ‘summer period’. The ‘spring period’ cluster was mainly characterized by dipeptides positively correlated with a single bacterial taxon of the Alteromonadaceae family (BD1‐7 clade). Moreover, ‘summer’ dominant epibacterial taxa from the second cluster (including Erythrobacteraceae, Rhodospirillaceae, Oceanospirillaceae and Flammeovirgaceae) showed positive correlations with few metabolites known as macroalgal antifouling defences [e.g. dimethylsulphoniopropionate (DMSP) and proline] which exhibited a key role within the correlation network. Despite a core community that represents a significant part of the total epibacteria, changes in the microbiota structure associated with surface metabolome variations suggested that both environment and algal host shape the bacterial surface microbiota.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Temporal covariation of epibacterial community and surface metabolome in the Mediterranean seaweed holobiont Taonia atomaria

Paix

Othmani

Debroas

et al. 2019

Environmental Microbiology

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New Cytotoxic Monoalkyl Glycerol Ether from the Red Sea Soft Coral Nephthea mollis

Eissa,

Abdel‐Tawab,

Hamed

et al. 2023

Chemistry & Biodiversity

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A new monoalkyl glycerol ether, 3‐(n‐henicosyloxy) propane‐1,2‐diol (1), was isolated from the CH2Cl2/MeOH crude extract of the Red Sea soft coral Nephthea mollis. Additionally, three known related analogues were identified: chimyl alcohol (2), batyl alcohol (3), and 3‐(icosyloxy) propane‐1,2‐diol (4). The chemical structure of 3‐(n‐henicosyloxy) propane‐1,2‐diol was determined using advanced spectroscopic analyses, including 1D, 2D Nuclear Magnetic Resonance (NMR), Electron Ionization mass spectra (EI‐MS), and High‐Resolution Electron Spray Ionization mass spectra (HRESIMS) analyses. Furthermore, the identification of chimyl alcohol, batyl alcohol and 3‐(icosyloxy) propane‐1,2‐diol was achieved by studying their EI mass fragmentation analyses and comparing their mass data with those previously reported in the literature. The cytotoxic activity of the Nephthea mollis crude extract and 3‐(n‐henicosyloxy) propane‐1,2‐diol was evaluated against five human cancer cell lines: HepG2 (hepatocellular carcinoma), MCF‐7 (breast carcinoma), NCI‐1299 (lung carcinoma), HeLa (cervical cancer cell), and HT‐29 (colon adenocarcinoma). Moreover, 3‐(n‐henicosyloxy) propane‐1,2‐diol revealed moderate cytotoxicity against the HeLa cell line with an IC50 value of 24.1 μM, while showing inactivity against the remaining cell lines (IC50 >100 μM).

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Current Trends and Future Prospective of Anti-biofilm Compounds from Marine Macroalgae: An Overview

Viju

Punitha

Ambati

et al. 2022

Sustainable Global Resources of Seaweeds Volume 2

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Settlement inhibition of marine biofilm bacteria and barnacle larvae by compounds isolated from the Mediterranean brown alga Taonia atomaria

Cited by 42 publications

References 82 publications

Temporal covariation of epibacterial community and surface metabolome in the Mediterranean seaweed holobiont Taonia atomaria

Temporal covariation of epibacterial community and surface metabolome in the Mediterranean seaweed holobiont Taonia atomaria

New Cytotoxic Monoalkyl Glycerol Ether from the Red Sea Soft Coral Nephthea mollis

Current Trends and Future Prospective of Anti-biofilm Compounds from Marine Macroalgae: An Overview

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