1
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Grone J, Poirier C, Abbott K, Wittmers F, Jaeger GS, Mahadevan A, Worden AZ. A single Prochlorococcus ecotype dominates the tropical Bay of Bengal with ultradian growth. Environ Microbiol 2024; 26:e16605. [PMID: 38517690 DOI: 10.1111/1462-2920.16605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 02/23/2024] [Indexed: 03/24/2024]
Abstract
The Bay of Bengal (BoB) spans >2.2 million km2 in the northeastern Indian Ocean and is bordered by dense populations that depend upon its resources. Over recent decades, a shift from larger phytoplankton to picoplankton has been reported, yet the abundance, activity, and composition of primary producer communities are not well-characterized. We analysed the BoB regions during the summer monsoon. Prochlorococcus ranged up to 3.14 × 105 cells mL-1 in the surface mixed layer, averaging 1.74 ± 0.46 × 105 in the upper 10 m and consistently higher than Synechococcus and eukaryotic phytoplankton. V1-V2 rRNA gene amplicon analyses showed the High Light II (HLII) ecotype formed 98 ± 1% of Prochlorococcus amplicons in surface waters, comprising six oligotypes, with the dominant oligotype accounting for 65 ± 4% of HLII. Diel sampling of a coherent water mass demonstrated evening onset of cell division and rapid Prochlorococcus growth between 1.5 and 3.1 div day-1, based on cell cycle analysis, as confirmed by abundance-based estimates of 2.1 div day-1. Accumulation of Prochlorococcus produced by ultradian growth was restricted by high loss rates. Alongside prior Arabian Sea and tropical Atlantic rates, our results indicate Prochlorococcus growth rates should be reevaluated with greater attention to latitudinal zones and influences on contributions to global primary production.
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Affiliation(s)
- Jonathan Grone
- Ocean EcoSystems Biology Unit, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Camille Poirier
- Ocean EcoSystems Biology Unit, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Kathleen Abbott
- Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
- Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
| | - Fabian Wittmers
- Ocean EcoSystems Biology Unit, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
- Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | | | - Amala Mahadevan
- Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
| | - Alexandra Z Worden
- Ocean EcoSystems Biology Unit, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
- Marine Biological Laboratory, Woods Hole, Massachusetts, USA
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2
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Prasoodanan P K V, Kumar S, Dhakan DB, Waiker P, Saxena R, Sharma VK. Metagenomic exploration of Andaman region of the Indian Ocean. Sci Rep 2024; 14:2717. [PMID: 38302544 PMCID: PMC10834444 DOI: 10.1038/s41598-024-53190-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 01/28/2024] [Indexed: 02/03/2024] Open
Abstract
Ocean microbiome is crucial for global biogeochemical cycles and primary productivity. Despite numerous studies investigating the global ocean microbiomes, the microbiome composition of the Andaman region of the Indian Ocean remains largely unexplored. While this region harbors pristine biological diversity, the escalating anthropogenic activities along coastal habitats exert an influence on the microbial ecology and impact the aquatic ecosystems. We investigated the microbiome composition in the coastal waters of the Andaman Islands by 16S rRNA gene amplicon and metagenomic shotgun sequencing approaches and compared it with the Tara Oceans Consortium. In the coastal waters of the Andaman Islands, a significantly higher abundance and diversity of Synechococcus species was observed with a higher abundance of photosynthesis pigment-related genes to adapt to variable light conditions and nutrition. In contrast, Prochlorococcus species showed higher abundance in open ocean water samples of the Indian Ocean region, with a relatively limited functional diversity. A higher abundance of antibiotic-resistance genes was also noted in the coastal waters region. We also updated the ocean microbiome gene catalog with 93,172 unique genes from the Andaman coastal water microbiome. This study provides valuable insights into the Indian Ocean microbiome and supplements the global marine microbial ecosystem studies.
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Affiliation(s)
- Vishnu Prasoodanan P K
- MetaBioSys Group, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Sudhir Kumar
- MetaBioSys Group, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Darshan B Dhakan
- MetaBioSys Group, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Prashant Waiker
- MetaBioSys Group, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Rituja Saxena
- MetaBioSys Group, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Vineet K Sharma
- MetaBioSys Group, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India.
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3
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Minch B, Akter S, Weinheimer A, Rahman MS, Parvez MAK, Rezwana Rahman S, Ahmed MF, Moniruzzaman M. Phylogenetic diversity and functional potential of large and cell-associated viruses in the Bay of Bengal. mSphere 2023; 8:e0040723. [PMID: 37902318 PMCID: PMC10732071 DOI: 10.1128/msphere.00407-23] [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: 07/19/2023] [Accepted: 09/22/2023] [Indexed: 10/31/2023] Open
Abstract
IMPORTANCE The BoB, the world's largest bay, is of significant economic importance to surrounding countries, particularly Bangladesh, which heavily relies on its coastal resources. Concurrently, the BoB holds substantial ecological relevance due to the region's high vulnerability to climate change-induced impacts. Yet, our understanding of the BoB's microbiome in relation to marine food web and biogeochemical cycling remains limited. Particularly, there are little or no data on the viral diversity and host association in the BoB. We examined the viral community in two distinct BoB coastal regions to reveal a multitude of viral species interacting with a wide range of microbial hosts, some of which play key roles in coastal biogeochemical cycling or potential pathogens. Furthermore, we demonstrate that the BoB coast harbors a diverse community of large and giant viruses, underscoring the importance of investigating understudied environments to discover novel viral lineages with complex metabolic capacities.
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Affiliation(s)
- Benjamin Minch
- Department of Marine Biology and Ecology, Rosenstiel School of Marine, Atmospheric, and Earth Science, University of Miami, Miami, Florida, USA
| | - Salma Akter
- Department of Microbiology, Jahangirnagar University, Dhaka, Bangladesh
| | | | - M. Shaminur Rahman
- Department of Microbiology, Jashore University of Science and Technology, Jashore, Bangladesh
| | | | | | - Md Firoz Ahmed
- Department of Microbiology, Jahangirnagar University, Dhaka, Bangladesh
| | - Mohammad Moniruzzaman
- Department of Marine Biology and Ecology, Rosenstiel School of Marine, Atmospheric, and Earth Science, University of Miami, Miami, Florida, USA
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4
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Strauss J, Choi CJ, Grone J, Wittmers F, Jimenez V, Makareviciute-Fichtner K, Bachy C, Jaeger GS, Poirier C, Eckmann C, Spezzano R, Löscher CR, Sarma VVSS, Mahadevan A, Worden AZ. The Bay of Bengal exposes abundant photosynthetic picoplankton and newfound diversity along salinity-driven gradients. Environ Microbiol 2023; 25:2118-2141. [PMID: 37311449 DOI: 10.1111/1462-2920.16431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 05/13/2023] [Indexed: 06/15/2023]
Abstract
The Bay of Bengal (BoB) is a 2,600,000 km2 expanse in the Indian Ocean upon which many humans rely. However, the primary producers underpinning food chains here remain poorly characterized. We examined phytoplankton abundance and diversity along strong BoB latitudinal and vertical salinity gradients-which have low temperature variation (27-29°C) between the surface and subsurface chlorophyll maximum (SCM). In surface waters, Prochlorococcus averaged 11.7 ± 4.4 × 104 cells ml-1 , predominantly HLII, whereas LLII and 'rare' ecotypes, HLVI and LLVII, dominated in the SCM. Synechococcus averaged 8.4 ± 2.3 × 104 cells ml-1 in the surface, declined rapidly with depth, and population structure of dominant Clade II differed between surface and SCM; Clade X was notable at both depths. Across all sites, Ostreococcus Clade OII dominated SCM eukaryotes whereas communities differentiated strongly moving from Arabian Sea-influenced high salinity (southerly; prasinophytes) to freshwater-influenced low salinity (northerly; stramenopiles, specifically, diatoms, pelagophytes, and dictyochophytes, plus the prasinophyte Micromonas) surface waters. Eukaryotic phytoplankton peaked in the south (1.9 × 104 cells ml-1 , surface) where a novel Ostreococcus was revealed, named here Ostreococcus bengalensis. We expose dominance of a single picoeukaryote and hitherto 'rare' picocyanobacteria at depth in this complex ecosystem where studies suggest picoplankton are replacing larger phytoplankton due to climate change.
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Affiliation(s)
- Jan Strauss
- Ocean EcoSystems Biology Unit, RD3, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Chang Jae Choi
- Ocean EcoSystems Biology Unit, RD3, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Jonathan Grone
- Ocean EcoSystems Biology Unit, RD3, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
- Faculty of Mathematics and Natural Sciences, Christian-Albrecht University of Kiel, Kiel, Germany
| | - Fabian Wittmers
- Ocean EcoSystems Biology Unit, RD3, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
- Faculty of Mathematics and Natural Sciences, Christian-Albrecht University of Kiel, Kiel, Germany
| | - Valeria Jimenez
- Ocean EcoSystems Biology Unit, RD3, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | | | - Charles Bachy
- Ocean EcoSystems Biology Unit, RD3, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
- Sorbonne Université - CNRS, Roscoff Culture Collection, FR2424, Station Biologique de Roscoff, Roscoff, France
| | - Gualtiero Spiro Jaeger
- Physical Oceanography Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
| | - Camille Poirier
- Ocean EcoSystems Biology Unit, RD3, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Charlotte Eckmann
- Ocean EcoSystems Biology Unit, RD3, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Rachele Spezzano
- Ocean EcoSystems Biology Unit, RD3, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Carolin R Löscher
- Nordcee, DIAS, Department of Biology, University of Southern Denmark, Odense, Denmark
| | - V V S S Sarma
- Regional Centre, CSIR-National Institute of Oceanography, Visakhapatnam, India
| | - Amala Mahadevan
- Physical Oceanography Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
| | - Alexandra Z Worden
- Ocean EcoSystems Biology Unit, RD3, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
- Faculty of Mathematics and Natural Sciences, Christian-Albrecht University of Kiel, Kiel, Germany
- Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, USA
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5
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Akter S, Rahman MS, Ali H, Minch B, Mehzabin K, Siddique MM, Galib SM, Yesmin F, Azmuda N, Adnan N, Hasan NA, Rahman SR, Moniruzzaman M, Ahmed MF. Phylogenetic diversity and functional potential of the microbial communities along the Bay of Bengal coast. Sci Rep 2023; 13:15976. [PMID: 37749192 PMCID: PMC10520010 DOI: 10.1038/s41598-023-43306-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 09/21/2023] [Indexed: 09/27/2023] Open
Abstract
The Bay of Bengal, the world's largest bay, is bordered by populous countries and rich in resources like fisheries, oil, gas, and minerals, while also hosting diverse marine ecosystems such as coral reefs, mangroves, and seagrass beds; regrettably, its microbial diversity and ecological significance have received limited research attention. Here, we present amplicon (16S and 18S) profiling and shotgun metagenomics data regarding microbial communities from BoB's eastern coast, viz., Saint Martin and Cox's Bazar, Bangladesh. From the 16S barcoding data, Proteobacteria appeared to be the dominant phylum in both locations, with Alteromonas, Methylophaga, Anaerospora, Marivita, and Vibrio dominating in Cox's Bazar and Pseudoalteromonas, Nautella, Marinomonas, Vibrio, and Alteromonas dominating the Saint Martin site. From the 18S barcoding data, Ochrophyta, Chlorophyta, and Protalveolata appeared among the most abundant eukaryotic divisions in both locations, with significantly higher abundance of Choanoflagellida, Florideophycidae, and Dinoflagellata in Cox's Bazar. The shotgun sequencing data reveals that in both locations, Alteromonas is the most prevalent bacterial genus, closely paralleling the dominance observed in the metabarcoding data, with Methylophaga in Cox's Bazar and Vibrio in Saint Martin. Functional annotations revealed that the microbial communities in these samples harbor genes for biofilm formation, quorum sensing, xenobiotics degradation, antimicrobial resistance, and a variety of other processes. Together, these results provide the first molecular insight into the functional and phylogenetic diversity of microbes along the BoB coast of Bangladesh. This baseline understanding of microbial community structure and functional potential will be critical for assessing impacts of climate change, pollution, and other anthropogenic disturbances on this ecologically and economically vital bay.
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Affiliation(s)
- Salma Akter
- Department of Microbiology, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - M Shaminur Rahman
- Department of Microbiology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Hazrat Ali
- Department of Microbiology, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - Benjamin Minch
- Department of Marine Biology and Ecology, Rosenstiel School of Marine, Atmospheric, and Earth Science, University of Miami, Coral Gables, FL, USA
| | - Kaniz Mehzabin
- Department of Microbiology, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - Md Moradul Siddique
- Department of Computer Science and Engineering, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Syed Md Galib
- Department of Computer Science and Engineering, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Farida Yesmin
- Department of Microbiology, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - Nafisa Azmuda
- Department of Microbiology, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - Nihad Adnan
- Department of Microbiology, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - Nur A Hasan
- University of Maryland, College Park, MD, USA
| | | | - Mohammad Moniruzzaman
- Department of Marine Biology and Ecology, Rosenstiel School of Marine, Atmospheric, and Earth Science, University of Miami, Coral Gables, FL, USA.
| | - Md Firoz Ahmed
- Department of Microbiology, Jahangirnagar University, Savar, Dhaka, Bangladesh.
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6
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Marimuthu J, Rangamaran VR, Subramanian SHS, Balachandran KRS, Thenmozhi Kulasekaran N, Vasudevan D, Lee JK, Ramalingam K, Gopal D. Deep-sea sediment metagenome from Bay of Bengal reveals distinct microbial diversity and functional significance. Genomics 2022; 114:110524. [PMID: 36423774 DOI: 10.1016/j.ygeno.2022.110524] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 11/06/2022] [Accepted: 11/20/2022] [Indexed: 11/23/2022]
Abstract
Bay of Bengal (BoB) has immense significance with respect to ecological diversity and natural resources. Studies on microbial profiling and their functional significance at sediment level of BoB remain poorly represented. Herein, we describe the microbial diversity and metabolic potentials of BOB deep-sea sediment samples by subjecting the metagenomes to Nanopore sequencing. Taxonomic diversity ascertained at various levels revealed that bacteria belonging to phylum Proteobacteria predominantly represented in sediment samples NIOT_S7 and NIOT_S9. A comparative study with 16S datasets from similar ecological sites revealed depth as a crucial factor in determining taxonomic diversity. KEGG annotation indicated that bacterial communities possess sequence reads corresponding to carbon dioxide fixation, sulfur, nitrogen metabolism, but at varying levels. Additionally, gene sequences related to bioremediation of dyes, plastics, hydrocarbon, antibiotic resistance, secondary metabolite synthesis and metal resistance from both the samples as studied indicate BoB to represent a highly diverse environmental niche for further exploration.
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Affiliation(s)
- Jeya Marimuthu
- Marine Biotechnology Division, National Institute of Ocean Technology, Chennai 600100, India.
| | | | | | | | | | - Dinakaran Vasudevan
- KMCH Research Foundation, Coimbatore Medical Center and Hospital, Coimbatore 641014, India
| | - Jung-Kul Lee
- Department of Chemical Engineering, Konkuk University, Seoul 143 701, Republic of Korea
| | - Kirubagaran Ramalingam
- Marine Biotechnology Division, National Institute of Ocean Technology, Chennai 600100, India
| | - Dharani Gopal
- Marine Biotechnology Division, National Institute of Ocean Technology, Chennai 600100, India.
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7
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Tiburcio SRG, Macrae A, Peixoto RS, da Costa Rachid CTC, Mansoldo FRP, Alviano DS, Alviano CS, Ferreira DF, de Queiroz Venâncio F, Ferreira DF, Vermelho AB. Sulphate-reducing bacterial community structure from produced water of the Periquito and Galo de Campina onshore oilfields in Brazil. Sci Rep 2021; 11:20311. [PMID: 34645885 PMCID: PMC8514479 DOI: 10.1038/s41598-021-99196-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 09/09/2021] [Indexed: 12/28/2022] Open
Abstract
Sulphate-reducing bacteria (SRB) cause fouling, souring, corrosion and produce H2S during oil and gas production. Produced water obtained from Periquito (PQO) and Galo de Campina (GC) onshore oilfields in Brazil was investigated for SRB. Produced water with Postgate B, Postgate C and Baars media was incubated anaerobically for 20 days. DNA was extracted, 16S rDNA PCR amplified and fragments were sequenced using Illumina TruSeq. 4.2 million sequence reads were analysed and deposited at NCBI SAR accession number SRP149784. No significant differences in microbial community composition could be attributed to the different media but significant differences in the SRB were observed between the two oil fields. The dominant bacterial orders detected from both oilfields were Desulfovibrionales, Pseudomonadales and Enterobacteriales. The genus Pseudomonas was found predominantly in the GC oilfield and Pleomorphominas and Shewanella were features of the PQO oilfield. 11% and 7.6% of the sequences at GC and PQO were not classified at the genus level but could be partially identified at the order level. Relative abundances changed for Desulfovibrio from 29.8% at PQO to 16.1% at GC. Clostridium varied from 2.8% at PQO and 2.4% at GC. These data provide the first description of SRB from onshore produced water in Brazil and reinforce the importance of Desulfovibrionales, Pseudomonadales, and Enterobacteriales in produced water globally. Identifying potentially harmful microbes is an important first step in developing microbial solutions that prevent their proliferation.
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Affiliation(s)
- Samyra Raquel Gonçalves Tiburcio
- Post Graduate Program in Plant Biotechnology and Bioprocesses, Decania, Center for Health Sciences, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Andrew Macrae
- Post Graduate Program in Plant Biotechnology and Bioprocesses, Decania, Center for Health Sciences, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
- Institute of Microbiology Paulo de Góes, Brasil, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
| | - Raquel Silva Peixoto
- Post Graduate Program in Plant Biotechnology and Bioprocesses, Decania, Center for Health Sciences, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Institute of Microbiology Paulo de Góes, Brasil, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Red Sea Research Center (RSRC), Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | | | - Felipe Raposo Passos Mansoldo
- Institute of Microbiology Paulo de Góes, Brasil, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- BIOINOVAR - Biocatalysis, Bioproducts and Bioenergy Lab, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Daniela Sales Alviano
- Post Graduate Program in Plant Biotechnology and Bioprocesses, Decania, Center for Health Sciences, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Institute of Microbiology Paulo de Góes, Brasil, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Celuta Sales Alviano
- Post Graduate Program in Plant Biotechnology and Bioprocesses, Decania, Center for Health Sciences, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Institute of Microbiology Paulo de Góes, Brasil, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Davis Fernandes Ferreira
- Post Graduate Program in Plant Biotechnology and Bioprocesses, Decania, Center for Health Sciences, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA
| | | | | | - Alane Beatriz Vermelho
- Post Graduate Program in Plant Biotechnology and Bioprocesses, Decania, Center for Health Sciences, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Institute of Microbiology Paulo de Góes, Brasil, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- BIOINOVAR - Biocatalysis, Bioproducts and Bioenergy Lab, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
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8
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Unveiling the Antifouling Performance of Different Marine Surfaces and Their Effect on the Development and Structure of Cyanobacterial Biofilms. Microorganisms 2021; 9:microorganisms9051102. [PMID: 34065462 PMCID: PMC8161073 DOI: 10.3390/microorganisms9051102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/10/2021] [Accepted: 05/17/2021] [Indexed: 01/12/2023] Open
Abstract
Since biofilm formation by microfoulers significantly contributes to the fouling process, it is important to evaluate the performance of marine surfaces to prevent biofilm formation, as well as understand their interactions with microfoulers and how these affect biofilm development and structure. In this study, the long-term performance of five surface materials—glass, perspex, polystyrene, epoxy-coated glass, and a silicone hydrogel coating—in inhibiting biofilm formation by cyanobacteria was evaluated. For this purpose, cyanobacterial biofilms were developed under controlled hydrodynamic conditions typically found in marine environments, and the biofilm cell number, wet weight, chlorophyll a content, and biofilm thickness and structure were assessed after 49 days. In order to obtain more insight into the effect of surface properties on biofilm formation, they were characterized concerning their hydrophobicity and roughness. Results demonstrated that silicone hydrogel surfaces were effective in inhibiting cyanobacterial biofilm formation. In fact, biofilms formed on these surfaces showed a lower number of biofilm cells, chlorophyll a content, biofilm thickness, and percentage and size of biofilm empty spaces compared to remaining surfaces. Additionally, our results demonstrated that the surface properties, together with the features of the fouling microorganisms, have a considerable impact on marine biofouling potential.
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9
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Faria SI, Teixeira-Santos R, Morais J, Vasconcelos V, Mergulhão FJ. The association between initial adhesion and cyanobacterial biofilm development. FEMS Microbiol Ecol 2021; 97:6204666. [PMID: 33784393 DOI: 10.1093/femsec/fiab052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 03/25/2021] [Indexed: 02/06/2023] Open
Abstract
Although laboratory assays provide valuable information about the antifouling effectiveness of marine surfaces and the dynamics of biofilm formation, they may be laborious and time-consuming. This study aimed to determine the potential of short-time adhesion assays to estimate how biofilm development may proceed. The initial adhesion and cyanobacterial biofilm formation were evaluated using glass and polymer epoxy resin surfaces under different hydrodynamic conditions and were compared using linear regression models. For initial adhesion, the polymer epoxy resin surface was significantly associated with a lower number of adhered cells compared with glass (-1.27 × 105 cells.cm-2). Likewise, the number of adhered cells was significantly lower (-1.16 × 105 cells.cm-2) at 185 than at 40 rpm. This tendency was maintained during biofilm development and was supported by the biofilm wet weight, thickness, chlorophyll a content and structure. Results indicated a significant correlation between the number of adhered and biofilm cells (r = 0.800, p < 0.001). Moreover, the number of biofilm cells on day 42 was dependent on the number of adhered cells at the end of the initial adhesion and hydrodynamic conditions (R2 = 0.795, p < 0.001). These findings demonstrate the high potential of initial adhesion assays to estimate marine biofilm development.
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Affiliation(s)
- Sara I Faria
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Rita Teixeira-Santos
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - João Morais
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal
| | - Vitor Vasconcelos
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal.,FCUP - Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4069-007, Porto, Portugal
| | - Filipe J Mergulhão
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal
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10
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Yin W, Xu S, Wang Y, Zhang Y, Chou SH, Galperin MY, He J. Ways to control harmful biofilms: prevention, inhibition, and eradication. Crit Rev Microbiol 2020; 47:57-78. [PMID: 33356690 DOI: 10.1080/1040841x.2020.1842325] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Biofilms are complex microbial architectures that encase microbial cells in a matrix comprising self-produced extracellular polymeric substances. Microorganisms living in biofilms are much more resistant to hostile environments than their planktonic counterparts and exhibit enhanced resistance against the microbicides. From the human perspective, biofilms can be classified into beneficial, neutral, and harmful. Harmful biofilms impact food safety, cause plant and animal diseases, and threaten medical fields, making it urgent to develop effective and robust strategies to control harmful biofilms. In this review, we discuss various strategies to control biofilm formation on infected tissues, implants, and medical devices. We classify the current strategies into three main categories: (i) changing the properties of susceptible surfaces to prevent biofilm formation; (ii) regulating signalling pathways to inhibit biofilm formation; (iii) applying external forces to eradicate the biofilm. We hope this review would motivate the development of innovative and effective strategies for controlling harmful biofilms.
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Affiliation(s)
- Wen Yin
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Siyang Xu
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Yiting Wang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Yuling Zhang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Shan-Ho Chou
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Michael Y Galperin
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD, USA
| | - Jin He
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, PR China
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