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Domínguez-Maldonado JA, Solís-Pereira SE, Valle-Gough RE, Álvarez AAM, Olguín-Maciel E, Alzate-Gaviria L, Tapia-Tussell R. Microbial communities present in Sargassum spp. leachates from the Mexican Caribbean which are involved in their degradation in the environment, a tool to tackle the problem. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:19904-19916. [PMID: 38367105 DOI: 10.1007/s11356-024-32363-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 02/03/2024] [Indexed: 02/19/2024]
Abstract
The Sargassum phenomenon is currently affecting the Caribbean in several ways; one of them is the increase of greenhouse gases due to the decomposition process of this macroalgae; these processes also produce large amounts of pollutant leachates, in which several microbial communities are involved. To understand these processes, we conducted a 150-day study on the Sargassum spp environmental degradation under outdoor conditions, during which leachates were collected at 0, 30, 90, and 150 days. Subsequently, a metagenomic study of the microorganisms found in the leachates was carried out, in which changes in the microbial community were observed over time. The results showed that anaerobic bacterial genera such as Thermofilum and Methanopyrus were predominant at the beginning of this study (0 and 30 days), degrading sugars of sulfur polymers such as fucoidan, but throughout the experiment, the microbial communities were changed also, with the genera Fischerella and Dolichospermum being the most predominant at days 90 and 150, respectively. A principal component analysis (PCA) indicated, with 94% variance, that genera were positively correlated at 30 and 90 days, but not with initial populations, indicating changes in community structure due to sargassum degradation were present. Finally, at 150 days, the leachate volume decreased by almost 50% and there was a higher abundance of the genera Desulfobacter and Dolichospemum. This is the first work carried out to understand the degradation of Sargassum spp, which will serve, together with other works, to understand and provide a solution to this serious environmental problem in the Caribbean.
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Affiliation(s)
- Jorge Arturo Domínguez-Maldonado
- Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán, Carretera Sierra Papacal Chuburná Puerto Km 5, Merida, c.p. 97302, Yucatán, México
| | - Sara Elena Solís-Pereira
- Department of Chemical and Biochemical Engineering, Tecnológico Nacional de México/IT de Mérida, Col. Plan de Ayala Norte, Av. Tecnológico Km 4.5 S/N 97118, Merida, Yucatán, México
| | - Raúl Enrique Valle-Gough
- Universidad Autónoma de Baja California: Instituto de Ciencias Agrícolas, Carretera a Delta S/N C.P. Ejido Nuevo León, Mexicali, 21705, Baja California, México
| | - Anuar Ahmed Magaña Álvarez
- Laboratorio Gembio, Centro de InvestigaciónCientífica de Yucatán, Calle 43 # 130 Colonia Chuburná, Merida, Yucatán, México
| | - Edgar Olguín-Maciel
- Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán, Carretera Sierra Papacal Chuburná Puerto Km 5, Merida, c.p. 97302, Yucatán, México
| | - Liliana Alzate-Gaviria
- Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán, Carretera Sierra Papacal Chuburná Puerto Km 5, Merida, c.p. 97302, Yucatán, México
| | - Raúl Tapia-Tussell
- Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán, Carretera Sierra Papacal Chuburná Puerto Km 5, Merida, c.p. 97302, Yucatán, México.
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Léger-Pigout M, Navarro E, Ménard F, Ruitton S, Le Loc’h F, Guasco S, Munaron JM, Thibault D, Changeux T, Connan S, Stiger-Pouvreau V, Thibaut T, Michotey V. Predominant heterotrophic diazotrophic bacteria are involved in Sargassum proliferation in the Great Atlantic Sargassum Belt. THE ISME JOURNAL 2024; 18:wrad026. [PMID: 38365246 PMCID: PMC10833076 DOI: 10.1093/ismejo/wrad026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/27/2023] [Accepted: 12/08/2023] [Indexed: 02/18/2024]
Abstract
Since 2011, the Caribbean coasts have been subject to episodic influxes of floating Sargassum seaweed of unprecedented magnitude originating from a new area "the Great Atlantic Sargassum Belt" (GASB), leading in episodic influxes and mass strandings of floating Sargassum. For the biofilm of both holopelagic and benthic Sargassum as well as in the surrounding waters, we characterized the main functional groups involved in the microbial nitrogen cycle. The abundance of genes representing nitrogen fixation (nifH), nitrification (amoA), and denitrification (nosZ) showed the predominance of diazotrophs, particularly within the GASB and the Sargasso Sea. In both location, the biofilm associated with holopelagic Sargassum harboured a more abundant proportion of diazotrophs than the surrounding water. The mean δ15N value of the GASB seaweed was very negative (-2.04‰), and lower than previously reported, reinforcing the hypothesis that the source of nitrogen comes from the nitrogen-fixing activity of diazotrophs within this new area of proliferation. Analysis of the diversity of diazotrophic communities revealed for the first time the predominance of heterotrophic diazotrophic bacteria belonging to the phylum Proteobacteria in holopelagic Sargassum biofilms. The nifH sequences belonging to Vibrio genus (Gammaproteobacteria) and Filomicrobium sp. (Alphaproteobacteria) were the most abundant and reached, respectively, up to 46.0% and 33.2% of the community. We highlighted the atmospheric origin of the nitrogen used during the growth of holopelagic Sargassum within the GASB and a contribution of heterotrophic nitrogen-fixing bacteria to a part of the Sargassum proliferation.
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Affiliation(s)
- Matéo Léger-Pigout
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | - Elisabeth Navarro
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | - Frédéric Ménard
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | - Sandrine Ruitton
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | | | - Sophie Guasco
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | | | - Delphine Thibault
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | - Thomas Changeux
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | - Solène Connan
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280 Plouzane, France
| | | | - Thierry Thibaut
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
| | - Valérie Michotey
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France
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3
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Theirlynck T, Mendonça IRW, Engelen AH, Bolhuis H, Collado-Vides L, van Tussenbroek BI, García-Sánchez M, Zettler E, Muyzer G, Amaral-Zettler L. Diversity of the holopelagic Sargassum microbiome from the Great Atlantic Sargassum Belt to coastal stranding locations. HARMFUL ALGAE 2023; 122:102369. [PMID: 36754458 DOI: 10.1016/j.hal.2022.102369] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 10/26/2022] [Accepted: 12/07/2022] [Indexed: 06/18/2023]
Abstract
The holopelagic brown macroalgae Sargassum natans and Sargassum fluitans form essential habitats for attached and mobile fauna which contributes to a unique biodiversity in the Atlantic Ocean. However, holopelagic Sargassum natans (genotype I & VIII) and Sargassum fluitans (genotype III) have begun forming large accumulations with subsequent strandings on the western coast of Africa, the Caribbean and northern Brazil, threatening local biodiversity of coastal ecosystems and triggering economic losses. Moreover, stranded masses of holopelagic Sargassum may introduce or facilitate growth of bacteria that are not normally abundant in coastal regions where Sargassum is washing ashore. Hitherto, it is not clear how the holopelagic Sargassum microbiome varies across its growing biogeographic range and what factors drive the microbial composition. We determined the microbiome associated with holopelagic Sargassum from the Great Atlantic Sargassum Belt to coastal stranding sites in Mexico and Florida. We characterized the Sargassum microbiome via amplicon sequencing of the 16S V4 region hypervariable region of the rRNA gene. The microbial community of holopelagic Sargassum was mainly composed of photo(hetero)trophs, organic matter degraders and potentially pathogenic bacteria from the Pseudomonadaceae, Rhodobacteraceae and Vibrionaceae. Sargassum genotypes S. natans I, S. natans VIII and S. fluitans III contained similar microbial families, but relative abundances and diversity varied. LEfSE analyses further indicated biomarker genera that were indicative of Sargassum S. natans I/VIII and S. fluitans III. The holopelagic Sargassum microbiome showed biogeographic patterning with high relative abundances of Vibrio spp., but additional work is required to determine whether that represents health risks in coastal environments. Our study informs coastal management policy, where the adverse sanitary effects of stranded Sargassum might impact the health of coastal ecosystems.
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Affiliation(s)
- Tom Theirlynck
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Den Burg, Texel, The Netherlands; Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam 1098 XH, The Netherlands
| | - Inara Regina W Mendonça
- Department of Botany, Institute of Biosciences, University of São Paulo, Rua do Matão 277, São Paulo, 05508-090, Brazil
| | - Aschwin H Engelen
- Centro de Ciências do Mar, Universidade do Algarve, Gambelas, 8005-139, Faro, Portugal
| | - Henk Bolhuis
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Den Burg, Texel, The Netherlands
| | - Ligia Collado-Vides
- Department of Biological Sciences, Institute for Water and Environment, Florida International University, 11200 SW 8th Street, Miami, 33199, FL, United States of America
| | - Brigitta I van Tussenbroek
- Unidad Académica de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología-UNAM, Prol. Av. Niños Héroes S/N, Puerto Morelos, C.P. 77580, Q. Roo, Mexico
| | - Marta García-Sánchez
- Unidad Académica de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología-UNAM, Prol. Av. Niños Héroes S/N, Puerto Morelos, C.P. 77580, Q. Roo, Mexico; Instituto de Ingeniería, UNAM, Ciudad Universitaria, Ciudad de México, C.P. 04510, Mexico
| | - Erik Zettler
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Den Burg, Texel, The Netherlands
| | - Gerard Muyzer
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam 1098 XH, The Netherlands
| | - Linda Amaral-Zettler
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Den Burg, Texel, The Netherlands; Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam 1098 XH, The Netherlands.
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Devault DA, Massat F, Lambourdière J, Maridakis C, Dupuy L, Péné-Annette A, Dolique F. Micropollutant content of Sargassum drifted ashore: arsenic and chlordecone threat assessment and management recommendations for the Caribbean. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:66315-66334. [PMID: 35501441 DOI: 10.1007/s11356-022-20300-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 04/12/2022] [Indexed: 06/14/2023]
Abstract
Massive Sargassum beachings occurred since 2011 on Caribbean shores. Sargassum inundation events currently involve two species, namely S. fluitans and S. natans circulating and blooming along the North Atlantic subtropical gyre and in the entire Caribbean region up to the Gulf of Mexico. Like other brown seaweeds, Sargassum have been shown to bioaccumulate a large number of heavy metals, alongside with some organic compounds including the contamination by historical chlordecone pollution in French West Indies (FWI), an insecticide used against the banana's weevil Cosmopolites sordidus. The present study reports, during two successive years, the concentration levels of heavy metals including arsenic in Martinique and Guadeloupe (FWI). We found that Sargassum can also accumulate a high concentration of chlordecone. Sargassum contamination by chlordecone is observed in areas close to contaminated river mouth but can be partly due to chlordecone desorption when secondary drifted on chlordecone-free shore. Our results further demonstrate that algae bleaching raises a number of questions about inorganic and organic pollutant (i) bioaccumulation, at sea for arsenic and close to river plumes for chlordecone, (ii) transport, and (iii) dissemination, depending the shoreline and the speciation for arsenic and/or metabolization for both.
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Affiliation(s)
- Damien A Devault
- Département des Sciences et Technologies, Centre Universitaire de Formation et de Recherche de Mayotte, RN3, BP53, 97660, Mayotte, Dembeni, France.
- Unité Biologie des organismes et écosystèmes aquatiques (BOREA), Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle, Sorbonne Université, Institut de Recherche pour le Développement, Université de Caen Normandie, Université des Antilles, 43 rue Cuvier, 75005, Paris, France.
| | - Félix Massat
- La Drôme Laboratoire, 37 avenue de Lautagne, 118, Valence, BP, France
| | - Josie Lambourdière
- Unité Biologie des organismes et écosystèmes aquatiques (BOREA), Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle, Sorbonne Université, Institut de Recherche pour le Développement, Université de Caen Normandie, Université des Antilles, 43 rue Cuvier, 75005, Paris, France
| | - Clio Maridakis
- ADEME, Zone de Manhity Four à chaux Sud Immeuble Exodom LE, 97232, Le Lamentin, Martinique, France
| | - Laëtitia Dupuy
- Unité Biologie des organismes et écosystèmes aquatiques (BOREA), Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle, Sorbonne Université, Institut de Recherche pour le Développement, Université de Caen Normandie, Université des Antilles, 43 rue Cuvier, 75005, Paris, France
| | - Anne Péné-Annette
- EA 929 AIHP-Geode Campus Universitaire de Schœlcher, 97275, Schœlcher, Martinique, France
| | - Franck Dolique
- Unité Biologie des organismes et écosystèmes aquatiques (BOREA), Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle, Sorbonne Université, Institut de Recherche pour le Développement, Université de Caen Normandie, Université des Antilles, 43 rue Cuvier, 75005, Paris, France
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5
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Hervé V, Lambourdière J, René-Trouillefou M, Devault DA, Lopez PJ. Sargassum Differentially Shapes the Microbiota Composition and Diversity at Coastal Tide Sites and Inland Storage Sites on Caribbean Islands. Front Microbiol 2021; 12:701155. [PMID: 34777271 PMCID: PMC8586501 DOI: 10.3389/fmicb.2021.701155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 10/01/2021] [Indexed: 12/03/2022] Open
Abstract
Rafts of drifting pelagic Sargassum that are circulating across the Atlantic Ocean are complex ecosystems composed of a large number of associated species. Upon massive stranding, they lead to various socio-environmental issues including the inflow of contaminants and human health concerns. In this study, we used metabarcoding approaches to examine the differences in both the eukaryotic- and prokaryotic-associated communities from Sargassum present in two islands of the Lesser Antilles, namely Guadeloupe and Martinique. We detected significant differences in microbial community structure and composition between landing Sargassum, the surrounding seawater, and Sargassum from inland storage sites. In total we identified 22,214 prokaryotic and 17,679 eukaryotic OTUs. Among them, functional prediction analyses revealed a number of prokaryotes that might contribute to organic matter decomposition, nitrogen cycling and gas production, including sulfate-reducing bacteria at coastal landing sites, and methanogenic archaea at inland storage sites. We also found that Metazoan was the most abundant group in Sargassum samples, with nematode clades that presented exclusive or specific richness and abundance patterns depending on their Sargassum substrate. Together, these molecular inventories of the micro- and meiofauna communities provide baseline information for further characterization of trophic interactions, algal organic matter decomposition and nutrient transfers at coastal and inland storage sites.
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Affiliation(s)
- Vincent Hervé
- Max Planck Institute for Terrestrial Microbiology, Marburg, Germany.,Institut de Recherche sur la Biologie de l'Insecte, UMR 7261, CNRS-Université de Tours, Avenue Monge, Tours, France
| | - Josie Lambourdière
- Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA), Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique UMR-8067, Sorbonne Université, Institut de Recherche pour le Développement, Université de Caen Normandie, Université des Antilles, Paris, France
| | - Malika René-Trouillefou
- Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA), Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique UMR-8067, Sorbonne Université, Institut de Recherche pour le Développement, Université de Caen Normandie, Université des Antilles, Paris, France
| | - Damien Alain Devault
- Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA), Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique UMR-8067, Sorbonne Université, Institut de Recherche pour le Développement, Université de Caen Normandie, Université des Antilles, Paris, France
| | - Pascal Jean Lopez
- Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA), Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique UMR-8067, Sorbonne Université, Institut de Recherche pour le Développement, Université de Caen Normandie, Université des Antilles, Paris, France
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Michotey V, Blanfuné A, Chevalier C, Garel M, Diaz F, Berline L, Le Grand L, Armougom F, Guasco S, Ruitton S, Changeux T, Belloni B, Blanchot J, Ménard F, Thibaut T. In situ observations and modelling revealed environmental factors favouring occurrence of Vibrio in microbiome of the pelagic Sargassum responsible for strandings. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 748:141216. [PMID: 32798861 DOI: 10.1016/j.scitotenv.2020.141216] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 07/22/2020] [Accepted: 07/22/2020] [Indexed: 06/11/2023]
Abstract
Historically, pelagic Sargassum were only found in the Sargasso Sea. Since 2011, blooms were regularly observed in warmer water, further south. Their developments in Central Atlantic are associated with mass strandings on the coasts, causing important damages and potentially dispersion of new bacteria. Microbiomes associated with pelagic Sargassum were analysed at large scale in Central Atlantic and near Caribbean Islands with a focus on pathogenic bacteria. Vibrio appeared widely distributed among pelagic Sargassum microbiome of our samples with higher occurrence than previously found in Mexico Gulf. Six out the 16 Vibrio-OTUs (Operational Taxonomic Unit), representing 81.2 ± 13.1% of the sequences, felt in cluster containing pathogens. Among the four different microbial profiles of pelagic Sargassum microbiome, Vibrio attained about 2% in two profiles whereas it peaked, in the two others, at 6.5 and 26.8% respectively, largely above the concentrations found in seawater surrounding raft (0.5%). In addition to sampling and measurements, we performed backward Lagrangian modelling of trajectories of rafts, and rebuilt the sampled rafts environmental history allowing us to estimate Sargassum growth rates along raft displacements. We found that Vibrio was favoured by high Sargassum growth rate and in situ ammonium and nitrite, modelled phosphate and nitrate concentrations, whereas zooplankters, benthic copepods, and calm wind (proxy of raft buoyancy near the sea surface) were less favourable for them. Relations between Vibrio and other main bacterial groups identified a competition with Alteromonas. According to forward Lagrangian tracking, part of rafts containing Vibrio could strand on the Caribbean coasts, however the strong decreases of modelled Sargassum growth rates along this displacement suggest unfavourable environment for Vibrio. For the conditions and areas observed, the sanitary risk seemed in consequence minor, but in other areas or conditions where high Sargassum growth rate occurred near coasts, it could be more important.
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Affiliation(s)
- Valérie Michotey
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France.
| | - Aurélie Blanfuné
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Cristèle Chevalier
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Marc Garel
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Frédéric Diaz
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Léo Berline
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Louis Le Grand
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Fabrice Armougom
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Sophie Guasco
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Sandrine Ruitton
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Thomas Changeux
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Bruno Belloni
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Jean Blanchot
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Frédéric Ménard
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
| | - Thierry Thibaut
- Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, 13288 Marseille, France
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7
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Antúnez-Argüelles E, Herrera-Bulnes M, Torres-Ariño A, Mirón-Enríquez C, Soriano-García M, Robles-Gómez E. Enzymatic-assisted polymerization of the lignin obtained from a macroalgae consortium, using an extracellular laccase-like enzyme (Tg-laccase) from Tetraselmis gracilis. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2020; 55:739-747. [PMID: 32181694 DOI: 10.1080/10934529.2020.1738171] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/20/2020] [Accepted: 03/02/2020] [Indexed: 06/10/2023]
Abstract
In the past decade, Mexican coasts have received an enormous influx of macroalgae species, producing serious environmental and public health concerns. Here, we developed a green methodology to generate a new polymer from the lignin contained in the macroalgae. The methodology consists in lignin extraction-by-boiling and its subsequent polymerization with a laccase-like enzyme from the green algae Tetraselmis gracilis (Tg-laccase). Mass spectrometry revealed the presence of guaiacyl (G), p-hydroxyphenyl (H), and sinapyl alcohol as the main monolignols in the lignin from Sargassum sp. On the other hand, MALDI-TOF spectra shows an increase in the size of the lignin chain after enzymatic polymerization process with Tg-laccase. Besides, the characterization of the novel polymer -using 1H NMR, FTIR, SEC-FPLC, and UV/Vis- allowed establishing that during the polymerization process there is a decrease in the number of phenolic groups as well as loss of aromatic protons, which allowed proposing a polimerizacion mechanism. This methodology could be promising in the development of a new lignin-based polymer and would open a new direction for the environmental management of the macroalgae on the Mexican beaches.
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Affiliation(s)
- Erika Antúnez-Argüelles
- Laboratorio de química orgánica, Ingeniería ambiental, Universidad del Mar, Puerto Ángel, Oaxaca, México
- Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México City, México
| | - Marlo Herrera-Bulnes
- Laboratorio de química orgánica, Ingeniería ambiental, Universidad del Mar, Puerto Ángel, Oaxaca, México
| | - Alejandra Torres-Ariño
- Laboratorio de Biotecnología de Microalgas, Instituto de Industrias, Universidad del Mar, campus Puerto Ángel, Puerto Ángel, Oaxaca, México
| | - Coral Mirón-Enríquez
- Laboratorio de química orgánica, Ingeniería ambiental, Universidad del Mar, Puerto Ángel, Oaxaca, México
| | - Manuel Soriano-García
- Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México City, México
| | - Edson Robles-Gómez
- Laboratorio de química orgánica, Ingeniería ambiental, Universidad del Mar, Puerto Ángel, Oaxaca, México
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8
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Bacosa HP, Kamalanathan M, Chiu MH, Tsai SM, Sun L, Labonté JM, Schwehr KA, Hala D, Santschi PH, Chin WC, Quigg A. Extracellular polymeric substances (EPS) producing and oil degrading bacteria isolated from the northern Gulf of Mexico. PLoS One 2018; 13:e0208406. [PMID: 30521589 PMCID: PMC6283562 DOI: 10.1371/journal.pone.0208406] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 11/17/2018] [Indexed: 11/19/2022] Open
Abstract
Sinking marine oil snow was found to be a major mechanism in the transport of spilled oil from the surface to the deep sea following the Deepwater Horizon (DwH) oil spill. Marine snow formation is primarily facilitated by extracellular polymeric substances (EPS), which are mainly composed of proteins and carbohydrates secreted by microorganisms. While numerous bacteria have been identified to degrade oil, there is a paucity of knowledge on bacteria that produce EPS in response to oil and Corexit exposure in the northern Gulf of Mexico (nGoM). In this study, we isolated bacteria from surface water of the nGoM that grow on oil or Corexit dispersant. Among the 100 strains isolated, nine were identified to produce remarkable amounts of EPS. 16S rRNA gene analysis revealed that six isolates (strains C1, C5, W10, W11, W14, W20) belong to the genus Alteromonas; the others were related to Thalassospira (C8), Aestuariibacter (C12), and Escherichia (W13a). The isolates preferably degraded alkanes (17–77%), over polycyclic aromatic hydrocarbons (0.90–23%). The EPS production was determined in the presence of a water accommodated fraction (WAF) of oil, a chemical enhanced WAF (CEWAF), Corexit, and control. The highest production of visible aggregates was found in Corexit followed by CEWAF, WAF, and control; indicating that Corexit generally enhanced EPS production. The addition of WAF and Corexit did not affect the carbohydrate content, but significantly increased the protein content of the EPS. On the average, WAF and CEWAF treatments had nine to ten times more proteins, and Corexit had five times higher than the control. Our results reveal that Alteromonas and Thalassospira, among the commonly reported bacteria following the DwH spill, produce protein rich EPS that could have crucial roles in oil degradation and marine snow formation. This study highlights the link between EPS production and bacterial oil-degrading capacity that should not be overlooked during spilled oil clearance.
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Affiliation(s)
- Hernando P. Bacosa
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States of America
- * E-mail:
| | - Manoj Kamalanathan
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States of America
| | - Meng-Hsuen Chiu
- Bioengineering Program, School of Engineering, University of California at Merced, Merced, California, United States of America
| | - Shih-Ming Tsai
- Bioengineering Program, School of Engineering, University of California at Merced, Merced, California, United States of America
| | - Luni Sun
- Department of Marine Sciences, Texas A&M University at Galveston, Galveston, Texas, United States of America
| | - Jessica M. Labonté
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States of America
| | - Kathleen A. Schwehr
- Department of Marine Sciences, Texas A&M University at Galveston, Galveston, Texas, United States of America
| | - David Hala
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States of America
| | - Peter H. Santschi
- Department of Marine Sciences, Texas A&M University at Galveston, Galveston, Texas, United States of America
- Department of Oceanography, Texas A&M University, College Station, Texas, United States of America
| | - Wei-Chun Chin
- Bioengineering Program, School of Engineering, University of California at Merced, Merced, California, United States of America
| | - Antonietta Quigg
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States of America
- Department of Oceanography, Texas A&M University, College Station, Texas, United States of America
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One-step method for fabrication of superhydrophobic and superoleophilic surface for water-oil separation. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.05.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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