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De Castro-Fernández P, Angulo-Preckler C, García-Aljaro C, Avila C, Cutignano A. A Chemo-Ecological Investigation of Dendrilla antarctica Topsent, 1905: Identification of Deceptionin and the Effects of Heat Stress and Predation Pressure on Its Terpene Profiles. Mar Drugs 2023; 21:499. [PMID: 37755112 PMCID: PMC10532619 DOI: 10.3390/md21090499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 09/28/2023] Open
Abstract
Marine sponges usually host a wide array of secondary metabolites that play crucial roles in their biological interactions. The factors that influence the intraspecific variability in the metabolic profile of organisms, their production or ecological function remain generally unknown. Understanding this may help predict changes in biological relationships due to environmental variations as a consequence of climate change. The sponge Dendrilla antarctica is common in shallow rocky bottoms of the Antarctic Peninsula and is known to produce diterpenes that are supposed to have defensive roles. Here we used GC-MS to determine the major diterpenes in two populations of D. antarctica from two islands, Livingston and Deception Island (South Shetland Islands). To assess the potential effect of heat stress, we exposed the sponge in aquaria to a control temperature (similar to local), heat stress (five degrees higher) and extreme heat stress (ten degrees higher). To test for defence induction by predation pressure, we exposed the sponges to the sea star Odontaster validus and the amphipod Cheirimedon femoratus. Seven major diterpenes were isolated and identified from the samples. While six of them were already reported in the literature, we identified one new aplysulphurane derivative that was more abundant in the samples from Deception Island, so we named it deceptionin (7). The samples were separated in the PCA space according to the island of collection, with 9,11-dihydrogracilin A (1) being more abundant in the samples from Livingston, and deceptionin (7) in the samples from Deception. We found a slight effect of heat stress on the diterpene profiles of D. antarctica, with tetrahydroaplysulphurin-1 (6) and the gracilane norditerpene 2 being more abundant in the group exposed to heat stress. Predation pressure did not seem to influence the metabolite production. Further research on the bioactivity of D. antarctica secondary metabolites, and their responses to environmental changes will help better understand the functioning and fate of the Antarctic benthos.
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Affiliation(s)
- Paula De Castro-Fernández
- Department of Evolutionary Biology, Ecology and Environmental Sciences (BEECA), Faculty of Biology, Universitat de Barcelona (UB), 08028 Barcelona, Catalonia, Spain;
- Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona (UB), 08028 Barcelona, Catalonia, Spain
- Department of Genetics, Microbiology and Statistics, Faculty of Biology, Universitat de Barcelona (UB), 08028 Barcelona, Catalonia, Spain;
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Chimica Biomolecolare (ICB), 80078 Pozzuoli, Napoli, Italy;
| | - Carlos Angulo-Preckler
- Red Sea Research Center and Computational Bioscience Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia;
| | - Cristina García-Aljaro
- Department of Genetics, Microbiology and Statistics, Faculty of Biology, Universitat de Barcelona (UB), 08028 Barcelona, Catalonia, Spain;
| | - Conxita Avila
- Department of Evolutionary Biology, Ecology and Environmental Sciences (BEECA), Faculty of Biology, Universitat de Barcelona (UB), 08028 Barcelona, Catalonia, Spain;
- Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona (UB), 08028 Barcelona, Catalonia, Spain
| | - Adele Cutignano
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Chimica Biomolecolare (ICB), 80078 Pozzuoli, Napoli, Italy;
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2
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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3
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Bryozoan–cnidarian mutualism triggered a new strategy for greater resource exploitation as early as the Late Silurian. Sci Rep 2022; 12:15556. [PMID: 36114227 PMCID: PMC9481587 DOI: 10.1038/s41598-022-19955-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 09/07/2022] [Indexed: 11/25/2022] Open
Abstract
Bryozoans were common benthic invertebrates in the Silurian seas. The large biodiversity among Silurian benthic organisms prompted diversified interactions, and as a result bryozoans hosted many other organisms as symbionts. Here we analyse the cystoporate bryozoan Fistulipora przhidolensis and unidentified trepostomes intergrown with auloporid tabulate corals and putative hydrozoans. The material comes from the uppermost Přídolí Series (Late Silurian) of the Sõrve Peninsula, Saaremaa, Estonia. Our analysis shows that the interaction was beneficial for both organisms—cnidarians benefited from feeding currents created by the host bryozoan, while the latter benefited from the protection from predators by cnidae, it can thus be classified as mutualism. Such associations are common in modern seas. The analysed organisms are typically encrusting when the symbiosis is absent, when intergrown they display erect, branching morphologies, raised over the substratum, thus exploiting a higher suspension-feeding tier. While similar associations were known from the Devonian, we demonstrate that this novel ecological strategy for greater resource exploitation started as early as the latest Silurian.
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4
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Avila C, Buñuel X, Carmona F, Cotado A, Sacristán-Soriano O, Angulo-Preckler C. Would Antarctic Marine Benthos Survive Alien Species Invasions? What Chemical Ecology May Tell Us. Mar Drugs 2022; 20:md20090543. [PMID: 36135732 PMCID: PMC9501038 DOI: 10.3390/md20090543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/18/2022] [Accepted: 08/22/2022] [Indexed: 11/16/2022] Open
Abstract
Many Antarctic marine benthic macroinvertebrates are chemically protected against predation by marine natural products of different types. Antarctic potential predators mostly include sea stars (macropredators) and amphipod crustaceans (micropredators) living in the same areas (sympatric). Recently, alien species (allopatric) have been reported to reach the Antarctic coasts, while deep-water crabs are suggested to be more often present in shallower waters. We decided to investigate the effect of the chemical defenses of 29 representative Antarctic marine benthic macroinvertebrates from seven different phyla against predation by using non-native allopatric generalist predators as a proxy for potential alien species. The Antarctic species tested included 14 Porifera, two Cnidaria, two Annelida, one Nemertea, two Bryozooa, three Echinodermata, and five Chordata (Tunicata). Most of these Antarctic marine benthic macroinvertebrates were chemically protected against an allopatric generalist amphipod but not against an allopatric generalist crab from temperate waters. Therefore, both a possible recolonization of large crabs from deep waters or an invasion of non-native generalist crab species could potentially alter the fundamental nature of these communities forever since chemical defenses would not be effective against them. This, together with the increasing temperatures that elevate the probability of alien species surviving, is a huge threat to Antarctic marine benthos.
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Affiliation(s)
- Conxita Avila
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Catalonia, Spain
- Biodiversity Research Institute (IrBIO), University of Barcelona, 08028 Barcelona, Catalonia, Spain
- Whitman Center, Marine Biological Laboratory, Woods Hole, MA 02543, USA
- Correspondence: ; Tel.: +34-934020161
| | - Xavier Buñuel
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Catalonia, Spain
| | - Francesc Carmona
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Catalonia, Spain
| | - Albert Cotado
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Catalonia, Spain
| | - Oriol Sacristán-Soriano
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Catalonia, Spain
- Institut Català de Recerca de l’Aigua, c/Emili Grahit, 101 (Edifici H2O-ICRA), 17003 Girona, Catalonia, Spain
| | - Carlos Angulo-Preckler
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Catalonia, Spain
- Biodiversity Research Institute (IrBIO), University of Barcelona, 08028 Barcelona, Catalonia, Spain
- Red Sea Research Center (RSRC) & Biological and Environmental Sciences and Engineering Division (BESE), King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
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5
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Ciavatta ML, Lefranc F, Vieira LM, Kiss R, Carbone M, van Otterlo WAL, Lopanik NB, Waeschenbach A. The Phylum Bryozoa: From Biology to Biomedical Potential. Mar Drugs 2020; 18:E200. [PMID: 32283669 PMCID: PMC7230173 DOI: 10.3390/md18040200] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/31/2020] [Accepted: 04/06/2020] [Indexed: 01/06/2023] Open
Abstract
Less than one percent of marine natural products characterized since 1963 have been obtained from the phylum Bryozoa which, therefore, still represents a huge reservoir for the discovery of bioactive metabolites with its ~6000 described species. The current review is designed to highlight how bryozoans use sophisticated chemical defenses against their numerous predators and competitors, and which can be harbored for medicinal uses. This review collates all currently available chemoecological data about bryozoans and lists potential applications/benefits for human health. The core of the current review relates to the potential of bryozoan metabolites in human diseases with particular attention to viral, brain, and parasitic diseases. It additionally weighs the pros and cons of total syntheses of some bryozoan metabolites versus the synthesis of non-natural analogues, and explores the hopes put into the development of biotechnological approaches to provide sustainable amounts of bryozoan metabolites without harming the natural environment.
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Affiliation(s)
- Maria Letizia Ciavatta
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Chimica Biomolecolare (ICB), Via Campi Flegrei 34, 80078 Pozzuoli, Italy; (M.L.C.); (M.C.)
| | - Florence Lefranc
- Service de Neurochirurgie, Hôpital Erasme, Université Libre de Bruxelles (ULB), 1070 Brussels, Belgium
| | - Leandro M. Vieira
- Departamento de Zoologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE 50670-901, Brazil;
| | - Robert Kiss
- Retired – formerly at the Fonds National de la Recherche Scientifique (FRS-FNRS), 1000 Brussels, Belgium;
| | - Marianna Carbone
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Chimica Biomolecolare (ICB), Via Campi Flegrei 34, 80078 Pozzuoli, Italy; (M.L.C.); (M.C.)
| | - Willem A. L. van Otterlo
- Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa;
| | - Nicole B. Lopanik
- School of Earth and Atmospheric Sciences, School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA;
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6
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Figuerola B, Avila C. The Phylum Bryozoa as a Promising Source of Anticancer Drugs. Mar Drugs 2019; 17:E477. [PMID: 31426556 PMCID: PMC6722838 DOI: 10.3390/md17080477] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/14/2019] [Accepted: 08/15/2019] [Indexed: 12/31/2022] Open
Abstract
Recent advances in sampling and novel techniques in drug synthesis and isolation have promoted the discovery of anticancer agents from marine organisms to combat this major threat to public health worldwide. Bryozoans, which are filter-feeding, aquatic invertebrates often characterized by a calcified skeleton, are an excellent source of pharmacologically interesting compounds including well-known chemical classes such as alkaloids and polyketides. This review covers the literature for secondary metabolites isolated from marine cheilostome and ctenostome bryozoans that have shown potential as cancer drugs. Moreover, we highlight examples such as bryostatins, the most known class of marine-derived compounds from this animal phylum, which are advancing through anticancer clinical trials due to their low toxicity and antineoplastic activity. The bryozoan antitumor compounds discovered until now show a wide range of chemical diversity and biological activities. Therefore, more research focusing on the isolation of secondary metabolites with potential anticancer properties from bryozoans and other overlooked taxa covering wider geographic areas is needed for an efficient bioprospecting of natural products.
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Affiliation(s)
- Blanca Figuerola
- Institute of Marine Sciences (ICM-CSIC), Pg. Marítim de la Barceloneta 37-49, Barcelona 08003, Catalonia, Spain.
| | - Conxita Avila
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, and Biodiversity Research Institute (IrBIO), Faculty of Biology, University of Barcelona, Av. Diagonal 643, Barcelona 08028, Catalonia, Spain
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Hansen KØ, Isaksson J, Glomsaker E, Andersen JH, Hansen E. Ponasterone A and F, Ecdysteroids from the Arctic Bryozoan Alcyonidium gelatinosum. Molecules 2018; 23:E1481. [PMID: 29921766 PMCID: PMC6100090 DOI: 10.3390/molecules23061481] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 06/11/2018] [Accepted: 06/12/2018] [Indexed: 01/01/2023] Open
Abstract
A new ecdysteroid, ponasterone F (1) and the previously reported compound ponasterone A (2) were isolated from specimens of the Arctic marine bryozoan Alcyonidium gelatinosum collected at Hopenbanken, off the coast of Edgeøya, Svalbard. The structure of 1 was elucidated, and the structure of 2 confirmed by spectroscopic methods including 1D and 2D NMR and analysis of HR-MS data. The compounds were evaluated for their ability to affect bacterial survival and cell viability, as well as their agonistic activities towards the estrogen receptors α and β. The compounds were not active in these assays. Compound 2 is an arthropod hormone controlling molting and are known to act as an allelochemical when produced by plants. Even though its structure has been previously reported, this is the first time a ponasterone has been isolated from a bryozoan. A. gelatinosum produced 1 and 2 in concentrations surpassing those expected of hormonal molecules, indicating their function as defence molecules against molting predators. This work adds to the chemical diversity reported from marine bryozoans and expanded our knowledge of the chemical modifications of the ponasterones.
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Affiliation(s)
- Kine Østnes Hansen
- Marbio, UiT-The Arctic University of Norway, Breivika, N-9037 Tromsø, Norway.
| | - Johan Isaksson
- Department of Chemistry, UiT-The Arctic University of Norway, Breivika, N-9037 Tromsø, Norway.
| | - Eirin Glomsaker
- Marbio, UiT-The Arctic University of Norway, Breivika, N-9037 Tromsø, Norway.
| | | | - Espen Hansen
- Marbio, UiT-The Arctic University of Norway, Breivika, N-9037 Tromsø, Norway.
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8
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Seefeldt MA, Campana GL, Deregibus D, Quartino ML, Abele D, Tollrian R, Held C. Different feeding strategies in Antarctic scavenging amphipods and their implications for colonisation success in times of retreating glaciers. Front Zool 2017; 14:59. [PMID: 29299038 PMCID: PMC5745984 DOI: 10.1186/s12983-017-0248-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Accepted: 12/17/2017] [Indexed: 11/18/2022] Open
Abstract
Background Scavenger guilds are composed of a variety of species, co-existing in the same habitat and sharing the same niche in the food web. Niche partitioning among them can manifest in different feeding strategies, e.g. during carcass feeding. In the bentho-pelagic realm of the Southern Ocean, scavenging amphipods (Lysianassoidea) are ubiquitous and occupy a central role in decomposition processes. Here we address the question whether scavenging lysianassoid amphipods employ different feeding strategies during carcass feeding, and whether synergistic feeding activities may influence carcass decomposition. To this end, we compared the relatively large species Waldeckia obesa with the small species Cheirimedon femoratus, Hippomedon kergueleni, and Orchomenella rotundifrons during fish carcass feeding (Notothenia spp.). The experimental approach combined ex situ feeding experiments, behavioural observations, and scanning electron microscopic analyses of mandibles. Furthermore, we aimed to detect ecological drivers for distribution patterns of scavenging amphipods in the Antarctic coastal ecosystems of Potter Cove. In Potter Cove, the climate-driven rapid retreat of the Fourcade Glacier is causing various environmental changes including the provision of new marine habitats to colonise. While in the newly ice-free areas fish are rare, macroalgae have already colonised hard substrates. Assuming that a temporal dietary switch may increase the colonisation success of the most abundant lysianassoids C. femoratus and H. kergueleni, we aimed to determine their consumption rates (g food x g amphipods−1 x day−1) and preferences of macroalgae and fish. Results We detected two functional groups with different feeding strategies among scavenging amphipods during carcass feeding: carcass ‘opener’ and ‘squeezer’. Synergistic effects between these groups were not statistically verified under the conditions tested. C. femoratus switched its diet when fish was not available by consuming macroalgae (about 0.2 day−1) but preferred fish by feeding up to 80% of its own mass daily. Contrary, H. kergueleni rejected macroalgae entirely and consumed fish with a maximal rate of 0.8 day−1. Conclusion This study reveals functional groups in scavenging shallow-water amphipods and provides new information on coastal intraguild niche partitioning. We conclude that the dietary flexibility of C. femoratus is a potential ecological driver and central to its success in the colonisation of newly available ice-free Antarctic coastal habitats. Electronic supplementary material The online version of this article (10.1186/s12983-017-0248-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Meike Anna Seefeldt
- Department of Animal Ecology, Evolution and Biodiversity, Ruhr-University Bochum, Bochum, Germany.,Alfred-Wegener-Institut Helmholtz- Zentrum für Polar und Meeresforschung, Bremerhaven, Germany
| | - Gabriela Laura Campana
- Departamento de Biología Costera, Instituto Antártico Argentino, Buenos Aires, Argentina.,Departamento de Ciencias Básicas Universidad Nacional de Luján, Luján, Argentina
| | - Dolores Deregibus
- Departamento de Biología Costera, Instituto Antártico Argentino, Buenos Aires, Argentina
| | - María Liliana Quartino
- Departamento de Biología Costera, Instituto Antártico Argentino, Buenos Aires, Argentina.,Museo Argentino de Ciencias Naturales "B. Rivadavia", Buenos Aires, Argentina
| | - Doris Abele
- Alfred-Wegener-Institut Helmholtz- Zentrum für Polar und Meeresforschung, Bremerhaven, Germany
| | - Ralph Tollrian
- Department of Animal Ecology, Evolution and Biodiversity, Ruhr-University Bochum, Bochum, Germany
| | - Christoph Held
- Alfred-Wegener-Institut Helmholtz- Zentrum für Polar und Meeresforschung, Bremerhaven, Germany
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9
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Figuerola B, Angulo-Preckler C, Núñez-Pons L, Moles J, Sala-Comorera L, García-Aljaro C, Blanch AR, Avila C. Experimental evidence of chemical defence mechanisms in Antarctic bryozoans. MARINE ENVIRONMENTAL RESEARCH 2017; 129:68-75. [PMID: 28487162 DOI: 10.1016/j.marenvres.2017.04.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 04/19/2017] [Accepted: 04/26/2017] [Indexed: 06/07/2023]
Abstract
Bryozoans are among the most abundant and diverse members of the Antarctic benthos, however the role of bioactive metabolites in ecological interactions has been scarcely studied. To extend our knowledge about the chemical ecology of Antarctic bryozoans, crude ether extracts (EE) and butanol extracts (BE) obtained from two Antarctic common species (Cornucopina pectogemma and Nematoflustra flagellata), were tested for antibacterial and repellent activities. The extracts were screened for quorum quenching and antibacterial activities against four Antarctic bacterial strains (Bacillus aquimaris, Micrococcus sp., Oceanobacillus sp. and Paracoccus sp.). The Antarctic amphipod Cheirimedon femoratus and the sea star Odontaster validus were selected as sympatric predators to perform anti-predatory and substrate preference assays. No quorum quenching activity was detected in any of the extracts, while all EE exhibited growth inhibition towards at least one bacterium strain. Although the species were not repellent against the sea star, they caused repellence to the amphipods in both extracts, suggesting that defence activities against predation derive from both lipophilic and hydrophilic metabolites. In the substrate preference assays, one EE and one BE deriving from different specimens of the species C. pectogemma were active. This study reveals intraspecific variability of chemical defences and supports the fact that chemically mediated interactions are common in Antarctic bryozoans as means of protection against fouling and predation.
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Affiliation(s)
- Blanca Figuerola
- Department of Evolutionary Biology, Ecology, and Environmental Sciences and Biodiversity Research Institute (IrBIO), University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain.
| | - Carlos Angulo-Preckler
- Department of Evolutionary Biology, Ecology, and Environmental Sciences and Biodiversity Research Institute (IrBIO), University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain
| | - Laura Núñez-Pons
- Department of Biology and Evolution of Marine Organisms (BEOM) Stazione Zoologica 'Anton Dohrn' (SZN), Villa Comunale 80121, Naples, Italy; Smithsonian Tropical Research Institute (STRI), Bocas del Toro Labs, Panama
| | - Juan Moles
- Department of Evolutionary Biology, Ecology, and Environmental Sciences and Biodiversity Research Institute (IrBIO), University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain
| | - Laura Sala-Comorera
- Department of Genetics, Microbiology and Statistics, University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain
| | - Cristina García-Aljaro
- Department of Genetics, Microbiology and Statistics, University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain
| | - Anicet R Blanch
- Department of Genetics, Microbiology and Statistics, University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain
| | - Conxita Avila
- Department of Evolutionary Biology, Ecology, and Environmental Sciences and Biodiversity Research Institute (IrBIO), University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain
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10
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Avila C. Biological and chemical diversity in Antarctica: from new species to new natural products. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/14888386.2016.1176957] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Conxita Avila
- Department of Animal Biology, Biodiversity Research Institute, University of Barcelona, Barcelona, Catalonia, Spain
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11
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Núñez-Pons L, Avila C. Natural products mediating ecological interactions in Antarctic benthic communities: a mini-review of the known molecules. Nat Prod Rep 2015; 32:1114-30. [PMID: 25693047 DOI: 10.1039/c4np00150h] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Out of the many bioactive compounds described from the oceans, only a small fraction have been studied for their ecological significance. Similarly, most chemically mediated interactions are not well understood, because the molecules involved remain unrevealed. In Antarctica, this gap in knowledge is even more acute in comparison to tropical or temperate regions, even though polar organisms are also prolific producers of chemical defenses, and pharmacologically relevant products are being reported from the Southern Ocean. The extreme and unique marine environments surrounding Antarctica along with the numerous unusual interactions taking place in benthic communities are expected to select for novel functional secondary metabolites. There is an urgent need to comprehend the evolutionary role of marine derived substances in general, and particularly at the Poles, since molecules of keystone significance are vital in species survival, and therefore, in structuring the communities. Here we provide a mini-review on the identified marine natural products proven to have an ecological function in Antarctic ecosystems. This report recapitulates some of the bibliography from original Antarctic reviews, and updates the new literature in the field from 2009 to the present.
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12
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Figuerola B, Sala-Comorera L, Angulo-Preckler C, Vázquez J, Jesús Montes M, García-Aljaro C, Mercadé E, Blanch AR, Avila C. Antimicrobial activity of Antarctic bryozoans: an ecological perspective with potential for clinical applications. MARINE ENVIRONMENTAL RESEARCH 2014; 101:52-59. [PMID: 25232675 DOI: 10.1016/j.marenvres.2014.09.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 08/29/2014] [Accepted: 09/05/2014] [Indexed: 06/03/2023]
Abstract
The antimicrobial activity of Antarctic bryozoans and the ecological functions of the chemical compounds involved remain largely unknown. To determine the significant ecological and applied antimicrobial effects, 16 ether and 16 butanol extracts obtained from 13 different bryozoan species were tested against six Antarctic (including Psychrobacter luti, Shewanella livingstonensis and 4 new isolated strains) and two bacterial strains from culture collections (Escherichia coli and Bacillus cereus). Results from the bioassays reveal that all ether extracts exhibited antimicrobial activity against some bacteria. Only one butanol extract produced inhibition, indicating that antimicrobial compounds are mainly lipophilic. Ether extracts of the genus Camptoplites inhibited the majority of bacterial strains, thus indicating a broad-spectrum of antimicrobial activity. Moreover, most ether extracts presented activities against bacterial strains from culture collections, suggesting the potential use of these extracts as antimicrobial drugs against pathogenic bacteria.
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Affiliation(s)
- Blanca Figuerola
- Department of Animal Biology (Invertebrates) and Biodiversity Research Institute (IrBIO), Faculty of Biology, University of Barcelona, Barcelona, Catalunya, Spain.
| | - Laura Sala-Comorera
- Department of Microbiology, Faculty of Biology, University of Barcelona, Barcelona, Catalunya, Spain
| | - Carlos Angulo-Preckler
- Department of Animal Biology (Invertebrates) and Biodiversity Research Institute (IrBIO), Faculty of Biology, University of Barcelona, Barcelona, Catalunya, Spain
| | - Jennifer Vázquez
- Department of Animal Biology (Invertebrates) and Biodiversity Research Institute (IrBIO), Faculty of Biology, University of Barcelona, Barcelona, Catalunya, Spain
| | - M Jesús Montes
- Department of Health Microbiology and Parasitology, Faculty of Pharmacy, University of Barcelona, Barcelona, Catalunya, Spain
| | - Cristina García-Aljaro
- Department of Microbiology, Faculty of Biology, University of Barcelona, Barcelona, Catalunya, Spain
| | - Elena Mercadé
- Department of Health Microbiology and Parasitology, Faculty of Pharmacy, University of Barcelona, Barcelona, Catalunya, Spain
| | - Anicet R Blanch
- Department of Microbiology, Faculty of Biology, University of Barcelona, Barcelona, Catalunya, Spain
| | - Conxita Avila
- Department of Animal Biology (Invertebrates) and Biodiversity Research Institute (IrBIO), Faculty of Biology, University of Barcelona, Barcelona, Catalunya, Spain
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