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Zhang Z, Lu J, Zhang S, Tian Z, Feng C, Liu Y. Analysis of bacterial community structure, functional variation, and assembly mechanisms in multi-media habitats of lakes during the frozen period. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 284:116903. [PMID: 39205354 DOI: 10.1016/j.ecoenv.2024.116903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2024] [Revised: 08/13/2024] [Accepted: 08/16/2024] [Indexed: 09/04/2024]
Abstract
Ice, water, and sediment represent three interconnected habitats in lake ecosystems, and bacteria are crucial for maintaining ecosystem equilibrium and elemental cycling across these habitats. However, the differential characteristics and driving mechanisms of bacterial community structures in the ice, water, and sediments of seasonally frozen lakes remain unclear. In this study, high-throughput sequencing technology was used to analyze and compare the structure, function, network characteristics, and assembly mechanisms of bacterial communities in the ice, water, and sediment of Wuliangsuhai, a typical cold region in Inner Mongolia. The results showed that the bacterial communities in the ice and water phases had similar diversity and composition, with Proteobacteria, Bacteroidota, Actinobacteria, Campilobacterota, and Cyanobacteria as dominant phyla. The bacterial communities in sediments displayed significant differences from ice and water, with Chloroflexi, Proteobacteria, Firmicutes, Desulfobacterota, and Acidobacteriota being the dominant phyla. Notably, the bacterial communities in water exhibited higher spatial variability in their distribution than those in ice and sediment. This study also revealed that during the frozen period, the bacterial community species in the ice, water, and sediment media were dominated by cooperative relationships. Community assembly was primarily influenced by stochastic processes, with dispersal limitation and drift identified as the two most significant factors within this process. However, heterogeneous selection also played a significant role in the community composition. Furthermore, functions related to nitrogen, phosphorus, sulfur, carbon, and hydrogen cycling vary among bacterial communities in ice, water, and sediment. These findings elucidate the intrinsic mechanisms driving variability in bacterial community structure and changes in water quality across different media phases (ice, water, and sediment) in cold-zone lakes during the freezing period, offering new insights for water environmental protection and ecological restoration efforts in such environments.
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Affiliation(s)
- Zixuan Zhang
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Junping Lu
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; Inner Mongolia Autonomous Region Key Laboratory of Water Resources Protection and Utilization, Hohhot 010018, China; Collaborative Innovation Center for Integrated Management of Water Resources and Water Environment in Inner Mongolia Section of the Yellow River Basin, Hohhot 010018, China.
| | - Sheng Zhang
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; Inner Mongolia Autonomous Region Key Laboratory of Water Resources Protection and Utilization, Hohhot 010018, China; Collaborative Innovation Center for Integrated Management of Water Resources and Water Environment in Inner Mongolia Section of the Yellow River Basin, Hohhot 010018, China
| | - Zhiqiang Tian
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Chen Feng
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Yinghui Liu
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
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Hamamoto K, Mizuyama M, Nishijima M, Maeda A, Gibu K, Poliseno A, Iguchi A, Reimer JD. Diversity, composition and potential roles of sedimentary microbial communities in different coastal substrates around subtropical Okinawa Island, Japan. ENVIRONMENTAL MICROBIOME 2024; 19:54. [PMID: 39080706 PMCID: PMC11290285 DOI: 10.1186/s40793-024-00594-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 07/08/2024] [Indexed: 08/02/2024]
Abstract
BACKGROUND Marine benthic prokaryotic communities play crucial roles in material recycling within coastal environments, including coral reefs. Coastal sedimentary microbiomes are particularly important as potential reservoirs of symbiotic, beneficial, and pathogenic bacteria in coral reef environments, and therefore presumably play a core role in local ecosystem functioning. However, there is a lack of studies comparing different environments with multiple sites on the island scale, particularly studies focusing on prokaryotic communities, as previous investigations have focused mainly on a single site or on specific environmental conditions. In our study, we collected coastal sediments from seven sites around Okinawa Island, Japan, including three different benthic types; sandy bottoms, seagrass meadows, and hard substratum with living scleractinian corals. We then used metabarcoding to identify prokaryotic compositions and estimate enzymes encoded by genes to infer their functions. RESULTS The results showed that the three substrata had significantly different prokaryotic compositions. Seagrass meadow sites exhibited significantly higher prokaryotic alpha-diversity compared to sandy bottom sites. ANCOM analysis revealed that multiple bacterial orders were differentially abundant within each substratum. At coral reef sites, putative disease- and thermal stress-related opportunistic bacteria such as Rhodobacterales, Verrucomicrobiales, and Cytophagales were comparatively abundant, while seagrass meadow sites abundantly harbored Desulfobacterales, Steroidobacterales and Chromatiales, which are common bacterial orders in seagrass meadows. According to our gene-coded enzyme analyses the numbers of differentially abundant enzymes were highest in coral reef sites. Notably, superoxide dismutase, an important enzyme for anti-oxidative stress in coral tissue, was abundant at coral sites. Our results provide a list of prokaryotes to look into in each substrate, and further emphasize the importance of considering the microbiome, especially when focusing on environmental conservation. CONCLUSION Our findings prove that prokaryotic metabarcoding is capable of capturing compositional differences and the diversity of microbial communities in three different environments. Furthermore, several taxa were suggested to be differentially more abundant in specific environments, and gene-coded enzymic compositions also showed possible differences in ecological functions. Further study, in combination with field observations and temporal sampling, is key to achieving a better understanding of the interactions between the local microbiome and the surrounding benthic community.
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Affiliation(s)
- Kohei Hamamoto
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8567, Japan.
- Molecular Invertebrate Systematics and Ecology (MISE) Laboratory, Graduate School of Engineering and Science, University of the Ryukyus, Nishihara, Okinawa, 903-0213, Japan.
| | - Masaru Mizuyama
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8567, Japan
- Department of Health Informatics, Faculty of Human Health Sciences, Meio University, Nago, Okinawa, 905-8585, Japan
| | - Miyuki Nishijima
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8567, Japan
| | - Ayumi Maeda
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, 277-8564, Japan
| | - Kodai Gibu
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8567, Japan
| | - Angelo Poliseno
- Molecular Invertebrate Systematics and Ecology (MISE) Laboratory, Graduate School of Engineering and Science, University of the Ryukyus, Nishihara, Okinawa, 903-0213, Japan
| | - Akira Iguchi
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8567, Japan.
- Research Laboratory on Environmentally-Conscious Developments and Technologies [E-code], National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8567, Japan.
| | - James Davis Reimer
- Molecular Invertebrate Systematics and Ecology (MISE) Laboratory, Graduate School of Engineering and Science, University of the Ryukyus, Nishihara, Okinawa, 903-0213, Japan
- Tropical Biosphere Research Center, University of the Ryukyus, Nishihara, Okinawa, 903-0213, Japan
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Cao S, Duan M, Zhang X, Yang Z, Zhuo R. Bacterial community structure analysis of sludge from Taozi lake and isolation of an efficient 17β-Estradiol (E2) degrading strain Sphingobacterium sp. GEMB-CSS-01. CHEMOSPHERE 2024; 355:141806. [PMID: 38548087 DOI: 10.1016/j.chemosphere.2024.141806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 01/28/2024] [Accepted: 03/24/2024] [Indexed: 04/08/2024]
Abstract
Environmental challenges arising from organic pollutants pose a significant problem for modern societies. Efficient microbial resources for the degradation of these pollutants are highly valuable. In this study, the bacterial community structure of sludge samples from Taozi Lake (polluted by urban sewage) was studied using 16S rRNA sequencing. The bacterial phyla Proteobacteria, Bacteroidetes, and Chloroflexi, which are potentially important in organic matter degradation by previous studies, were identified as the predominant phyla in our samples, with relative abundances of 48.5%, 8.3%, and 6.6%, respectively. Additionally, the FAPROTAX and co-occurrence network analysis suggested that the core microbial populations in the samples may be closely associated with organic matter metabolism. Subsequently, sludge samples from Taozi Lake were subjected to enrichment cultivation to isolate organic pollutant-degrading microorganisms. The strain Sphingobacterium sp. GEMB-CSS-01, tolerant to sulfanilamide, was successfully isolated. Subsequent investigations demonstrated that Sphingobacterium sp. GEMB-CSS-01 efficiently degraded the endocrine-disrupting compound 17β-Estradiol (E2). It achieved degradation efficiencies of 80.0% and 53.5% for E2 concentrations of 10 mg/L and 20 mg/L, respectively, within 10 days. Notably, despite a reduction in degradation efficiency, Sphingobacterium sp. GEMB-CSS-01 retained its ability to degrade E2 even in the presence of sulfanilamide concentrations ranging from 50 to 200 mg/L. The findings of this research identify potential microbial resources for environmental bioremediation, and concurrently provide valuable information about the microbial community structure and patterns within Taozi Lake.
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Affiliation(s)
- Shanshan Cao
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha, 410082, PR China; Hunan Provincial Certified Enterprise Technology Center, Hunan Xiangjiao Liquor Industry Co., Ltd., Shaoyang, 422000, PR China
| | - Mifang Duan
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha, 410082, PR China
| | - Xuan Zhang
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, 410004, PR China
| | - Zhilong Yang
- Hunan Provincial Certified Enterprise Technology Center, Hunan Xiangjiao Liquor Industry Co., Ltd., Shaoyang, 422000, PR China
| | - Rui Zhuo
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha, 410082, PR China; Hunan Provincial Certified Enterprise Technology Center, Hunan Xiangjiao Liquor Industry Co., Ltd., Shaoyang, 422000, PR China.
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Gao L, Zhao Y, Wang Z, Zhang Y, Ming J, Sun X, Ni SQ. Seasonal and distance-decay patterns of surface sediments microbial nitrogen and sulfur cycling linkage in the eastern coast of China. MARINE POLLUTION BULLETIN 2024; 201:116169. [PMID: 38428046 DOI: 10.1016/j.marpolbul.2024.116169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/14/2024] [Accepted: 02/14/2024] [Indexed: 03/03/2024]
Abstract
The surface sediments as a repository of pelagic environment changes and microbial community structural succession tend to have a profound effect on global and local nitrogen and sulfur cycling. In this study, analysis of sediment samples collected from the Bohai Sea, Yellow Sea, and north of the East China Seas (BYnECS) revealed longitude, latitude, depth, and chlorophyll had the strongest influence on microbial community structure (p-values < 0.005). A clear distance-decay pattern was exhibited in BYnECS. The result of co-occurrence network modularization implied that the more active pathway in winter was thiosulfate reduction and nitrate reduction, while in summer it was nitrification. The potential functional genes were predicted in microbial communities, and the most dominant genes were assigned to assimilatory sulfur reduction, denitrification, and dissimilatory nitrate reduction. This study innovatively explored the potential relationships between nitrogen and sulfur cycling genes of these three sea regions in the China Sea.
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Affiliation(s)
- Linjie Gao
- Shenzhen Research Institute of Shandong University, School of Environmental Science and Engineering, Shandong University, China
| | - Yiyi Zhao
- School of Public Health, Shandong First Medical University and Shandong Academy of Medical Sciences, China
| | - Zhibin Wang
- School of Life Sciences, Shandong University, China
| | - Yong Zhang
- Shenzhen Xinbaoying Technology Co., Ltd, Guangdong, China
| | - Jie Ming
- Shenzhen Research Institute of Shandong University, School of Environmental Science and Engineering, Shandong University, China
| | - Xiaojie Sun
- Shenzhen Research Institute of Shandong University, School of Environmental Science and Engineering, Shandong University, China
| | - Shou-Qing Ni
- Shenzhen Research Institute of Shandong University, School of Environmental Science and Engineering, Shandong University, China.
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5
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Wei H, Liu C, Cui X, Shen Z, Wang J. Distribution characteristics of microorganisms in sediments of Dagu River and their biological indicator function for evaluating eco-environmental quality of rural river. ENVIRONMENTAL RESEARCH 2024; 245:118032. [PMID: 38159669 DOI: 10.1016/j.envres.2023.118032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024]
Abstract
The microorganisms in sediments play a crucial role in biogeochemical cycle processes, and numerous studies have shown that microbial community is closely related to environmental factors. However, the usability of sediment microorganisms to evaluate the eco-environment quality of rural rivers has not been adequately explored. This study investigated the distribution characteristics and response of sediment microorganisms to environmental parameters and benthic organisms. Based on the environmental parameters and benthic community indices, the 12 stations were divided into high-polluted group A, moderate-polluted group B and low-polluted group C. Station DG01 and DG02 in group A had the highest level of As and Ni pollution and nutrient concentration, and DG09 in group A had the lowest benthic diversity. Correspondingly, group A had the lowest abundance of Proteobacteria, which has a higher requirement for the environment than Planctomycetes. Group B had the highest sulfide level (97.45 mg/kg), and bacteria (Thiobacillus, Sulfurisoma and Sulfuritalea) with genes involved in sulfur cycling were more enriched in this group. Group C had the lowest level of total nitrogen (243.36 mg/kg), and Rhodanobacteraceae in Xanthomonadales might be a key bioindicator for low nitrogen. In addition, Chlorophyta was found to be more susceptible to heavy metals, and moreover co-occurrence networks showed that microeukaryotes were more sensitive to heavy metal pollution compared to benthic animals and prokaryotes. Therefore, this study suggested that benthic microorganisms especially microeukaryotes could be used as good indicators for evaluating the eco-environmental quality of rural rivers.
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Affiliation(s)
- Hongqing Wei
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Cong Liu
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Xumeng Cui
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Zhonghua Shen
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China; Shandong Bureau Test Center of China General Administration of Metallurgical Geology, Jinan, 250013, China.
| | - Jun Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China.
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Elsherbini J, Corzett C, Ravaglioli C, Tamburello L, Polz M, Bulleri F. Epilithic Bacterial Assemblages on Subtidal Rocky Reefs: Variation Among Alternative Habitats at Ambient and Enhanced Nutrient Levels. MICROBIAL ECOLOGY 2023; 86:1552-1564. [PMID: 36790500 PMCID: PMC10497455 DOI: 10.1007/s00248-023-02174-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 01/13/2023] [Indexed: 06/18/2023]
Abstract
Temperate rocky reefs often support mosaics of alternative habitats such as macroalgal forests, algal turfs and sea urchin barrens. Although the composition of epilithic microbial biofilms (EMBs) is recognized as a major determinant of macroalgal recruitment, their role in regulating the stability of alternative habitats on temperate rocky reefs remains unexplored. On shallow rocky reefs of the Island of Capraia (NW Mediterranean), we compared EMB structure among canopy stands formed by the fucoid Ericaria brachycarpa, algal turfs, and urchin barrens under ambient versus experimentally enhanced nutrient levels. The three habitats shared a core microbial community consisting of 21.6 and 25.3% of total ASVs under ambient and enhanced nutrient conditions, respectively. Although Gammaproteobacteria, Alphaproteobacteria and Flavobacteriia were the most abundant classes across habitats, multivariate analyses at the ASV level showed marked differences in EMB composition among habitats. Enhancing nutrient level had no significant effect on EMBs, although it increased their similarity between macroalgal canopy and turf habitats. At both ambient and enriched nutrient levels, ASVs mostly belonging to Proteobacteria and Bacteroidetes were more abundant in EMBs from macroalgal canopies than barrens. In contrast, ASVs belonging to the phylum of Proteobacteria and, in particular, to the families of Rhodobacteraceae and Flavobacteriaceae at ambient nutrient levels and of Rhodobacteraceae and Bacteriovoracaceae at enhanced nutrient levels were more abundant in turf than canopy habitats. Our results show that primary surfaces from alternative habitats that form mosaics on shallow rocky reefs in oligotrophic areas host distinct microbial communities that are, to some extent, resistant to moderate nutrient enhancement. Understanding the role of EMBs in generating reinforcing feedback under different nutrient loading regimes appears crucial to advance our understanding of the mechanisms underpinning the stability of habitats alternative to macroalgal forests as well as their role in regulating reverse shifts.
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Affiliation(s)
- Joseph Elsherbini
- MIT Microbiology Graduate Program, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02138, USA
| | - Christopher Corzett
- Molecular and Computational Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, CA, 90089, USA
| | - Chiara Ravaglioli
- Dipartimento di Biologia, Università di Pisa, CoNISMa, Via Derna 1, 56126, Pisa, Italy
| | - Laura Tamburello
- Department of Integrative Marine Ecology, Ischia Marine Centre, Stazione Zoologica Anton Dohrn, 80077, Punta San Pietro, Ischia, (Naples), Italy
| | - Martin Polz
- MIT Microbiology Graduate Program, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02138, USA
- Centre for Microbiology and Environmental Systems Science, Djerassiplatz 1, 1130, Vienna, Austria
| | - Fabio Bulleri
- Dipartimento di Biologia, Università di Pisa, CoNISMa, Via Derna 1, 56126, Pisa, Italy.
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Hu X, Wang X, Zhao S, Cao L, Pan Y, Li F, Li F, Lu J, Li Y, Song G, Zhang H, Sun P, Bao M. Uncovering the dynamic evolution of microbes and n-alkanes: Insights from the Kuroshio Extension in the Northwest Pacific Ocean. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 875:162418. [PMID: 36858214 DOI: 10.1016/j.scitotenv.2023.162418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/11/2023] [Accepted: 02/19/2023] [Indexed: 06/18/2023]
Abstract
Biomarkers offer unique insights into the state of the environment, but little is known about how they interact with microbial communities in the open ocean. This study investigated the correlative effects between microbial communities and n-alkane distribution in surface seawater and sediments from the Kuroshio Extension in the Northwest Pacific Ocean. The n-alkanes in both surface seawater and surface sediments were mostly derived from algae and higher plants, with some minor contributions from anthropogenic and biological sources. The composition of microbial communities in surface seawater and sediments was different. In surface seawater, the dominant taxa were Vibrio, Alteromonas, Clade_Ia, Pseudoalteromonas, and Synechococcus_CC9902, while the taxa in the sediments were mostly unclassified. These variations/fluctuations of n-alkanes in three areas caused the aggregation of specialized microbial communities (Alteromonas). As the characteristic composition indexes of two typical n-alkanes, Short-chain n-alkane carbon preference index (CPI-L) and long-chain n-alkane carbon preference index (CPI-H) significantly influenced the microbial community structure in surface seawater, but not in surface sediments. Effect of CPI on microbial communities may be attributed to anthropogenic inputs or petroleum pollution. The abundance of hydrocarbon degradation genes also varied across the three different areas. Our work underscores that n-alkanes in the oceans alter the microbial community structure and enrich associated degradation genes. The functional differences in microbial communities within different areas contribute to their ecological uniqueness.
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Affiliation(s)
- Xin Hu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, Shandong Province 266100, China
| | - Xinping Wang
- Key Laboratory of Ecological Warning, Protection & Restoration for Bohai Sea, Ministry of Natural Resources, Qingdao, Shandong Province 266033, China; North China Sea Environmental Monitoring Center, State Oceanic Administration, Qingdao, Shandong Province, 266033, China
| | - Shanshan Zhao
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, Shandong Province 266100, China
| | - Lixin Cao
- Key Laboratory of Ecological Warning, Protection & Restoration for Bohai Sea, Ministry of Natural Resources, Qingdao, Shandong Province 266033, China; North China Sea Environmental Monitoring Center, State Oceanic Administration, Qingdao, Shandong Province, 266033, China
| | - Yaping Pan
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, Shandong Province 266100, China
| | - Fujuan Li
- Key Laboratory of Ecological Warning, Protection & Restoration for Bohai Sea, Ministry of Natural Resources, Qingdao, Shandong Province 266033, China; North China Sea Environmental Monitoring Center, State Oceanic Administration, Qingdao, Shandong Province, 266033, China
| | - Fengshu Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, Shandong Province 266100, China
| | - Jinren Lu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, Shandong Province 266100, China
| | - Yiming Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, Shandong Province 266100, China
| | - Guodong Song
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, Shandong Province 266100, China
| | - Honghai Zhang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, Shandong Province 266100, China
| | - Peiyan Sun
- Key Laboratory of Ecological Warning, Protection & Restoration for Bohai Sea, Ministry of Natural Resources, Qingdao, Shandong Province 266033, China; North China Sea Environmental Monitoring Center, State Oceanic Administration, Qingdao, Shandong Province, 266033, China.
| | - Mutai Bao
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, Shandong Province 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, Shandong Province 266100, China.
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Wang C, Ju J, Zhang H, Liu P, Song Z, Hu X, Zheng Q. Exploring the variation of bacterial community and nitrogen transformation functional genes under the pressure of heavy metals in different coastal mariculture patterns. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 324:116365. [PMID: 36202038 DOI: 10.1016/j.jenvman.2022.116365] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 09/08/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
Equilibrium in microbial dynamics and nitrogen transformation in the sediment is critical for maintaining healthy mariculture environment. However, our understanding about the impact of heavy metals on the bacterial community and nitrogen transformation functional genes in different mariculture patterns is still limited. Here, we analyzed 30 sediment samples in the vertical distribution from three different mariculture patterns mainly include open mariculture zone (K), closed mariculture pond (F) and pristine marine area (Q). Illumina MiSeq Sequencing was applied to investigate the bacterial community and structure in the sediment. Quantitative polymerase chain reaction (qPCR) was used to determine the effect of heavy metals on nitrogen transformation functional genes. Results showed that bacterial community and structure varied greatly in different mariculture patterns. Chloroflexi, Proteobacteria and Desulfobacterota were predominant phyla in the coastal mariculture area. High concentrations of heavy metals mainly enriched in the up layer (5-40 cm) of the sediment in the mariculture zone. The abundance of functional genes in the closed mariculture pond was much higher than the open mariculture zone and pristine marine area. And the high abundance of nitrification and denitrification functional genes mainly accumulated at the depth from 5 cm to 40 cm. Heavy metals content such as Fe, Cr, Mn, Ni, As, Cd, Pb and nutrient content NH4+-N, NO3--N and NO2--N were highly associated with bacterial community and nitrogen transformation functional genes. This study comprehensively elaborated the effect of heavy metals on the bacterial community and nitrogen transformation functional genes in different coastal mariculture patterns, indicating the possible role of closed mariculture pond in reducing nitrogen transformation efficiency, which will provide useful information for preventing pollution risk in the mariculture area.
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Affiliation(s)
- Caixia Wang
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, Yantai, 264003, China
| | - Jiujun Ju
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, Yantai, 264003, China
| | - Haikun Zhang
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264403, China
| | - Pengyuan Liu
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264403, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zenglei Song
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264403, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoke Hu
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264403, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266237, China.
| | - Qiusheng Zheng
- Yantai Key Laboratory of Pharmacology of Traditional Chinese Medicine in Tumor Metabolism, School of Integrated Traditional Chinese and Western Medicine, Binzhou Medical University, Yantai, 264003, China.
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Lu J, Yuan Q, Wang X, Gong L, An X, Liu J. Antibiotics and microbial community-induced antibiotic-resistant genes distribution in soil and sediment in the eastern coastline of China. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:607. [PMID: 35867174 DOI: 10.1007/s10661-022-10295-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
The health risk of antibiotic-resistant genes (ARGs) has been a global concern, while the report on occurrence and prevalence of ARGs in coastal zone is relatively scarce. This study investigated typical ARGs in soil and sediment in coastal line of eastern China and assessed its relationship with antibiotics and heavy metals as well as microbial community. Results showed that eight ARGs were all detected in the samples, and β-lactam resistance gene blaTEM reached the highest absolute abundance (6.28 × 107 ~ 6.48 × 108 copies/g) and relative abundance (2.3 × 10-2 copies/16S rRNA) among samples. Amoxicillin and tetracycline were most frequently detected with the average concentration of 2.28 μg/kg and 3.48 μg/kg, respectively. Cr and Zn were found to be most abundant heavy metals with average value of 82.1 and 59.1 mg/kg, respectively. Proteobacteria, Campilobacterota, Bacteroidota, and Firmicutes were dominant phyla in most samples, while bacterial community varied significantly among samples. Redundancy analyses (RDA) showed that microbial community and antibiotics (amoxicillin and tetracycline) were driving factors of ARGs distribution, while heavy metals were not significantly correlated with ARGs. This study is helpful to understand the fate of ARGs in coastal zone.
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Affiliation(s)
- Jiarui Lu
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
- Nanjing Foreign Language School, Nanjing, 210008, China
| | - Qingbin Yuan
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Xiaolin Wang
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Lulin Gong
- Nanjing Foreign Language School, Nanjing, 210008, China
| | - Xinyi An
- Nanjing Foreign Language School, Nanjing, 210008, China
| | - Jiayang Liu
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, China.
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10
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Gan CD, Cui SF, Wu ZZ, Yang JY. Multiple heavy metal distribution and microbial community characteristics of vanadium-titanium magnetite tailing profiles under different management modes. JOURNAL OF HAZARDOUS MATERIALS 2022; 429:128032. [PMID: 35077965 DOI: 10.1016/j.jhazmat.2021.128032] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/27/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
Vanadium-titanium (V-Ti) magnetite tailings have caused great concern due to their safety hazards and environmental risks. However, the microbial community structure and the key geochemical factors of V-Ti magnetite tailing profiles under different management modes remain unclear. Therefore, we investigated the heavy metal distribution and the microbial community structure of the soils and tailings at varied depths of V-Ti magnetite tailing profiles with and without soil coverage. The results indicated that the topsoil covering measures retarded the acidification of tailings during stockpiling. However, As, Mn, and V in tailings have the ability to migrate to the overlying soil. Based on 16S rRNA gene amplicon sequencing, Proteobacteria was the dominant genus in the topsoil-covered tailings, whereas the most abundant genus in the exposed tailings was Betaproteobacteria. Furthermore, Rhodobacter, Hydrogenophaga, Novosphingobium, and Geobacter enriched in tailings may potentially contribute to V(V) biotransformation and the development of mine bioreremediation technologies. RDA and Spearman correlation analysis showed that pH, EC, Cd, Mn, Pb, and V were the main influencing factors regulating microbial community composition. Overall, this study provides insights for evaluating the soil covering management mode and the engineering applications of microbial technologies to manage V-Ti magnetite tailings.
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Affiliation(s)
- Chun-Dan Gan
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University Yibin Park, Yibin 644000, China
| | - Si-Fan Cui
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Zhen-Zhong Wu
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jin-Yan Yang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University Yibin Park, Yibin 644000, China.
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11
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Lv B, Shi J, Li T, Ren L, Tian W, Lu X, Han Y, Cui Y, Jiang T. Deciphering the characterization, ecological function and assembly processes of bacterial communities in ship ballast water and sediments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 816:152721. [PMID: 34974026 DOI: 10.1016/j.scitotenv.2021.152721] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/10/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
Various microorganisms are transported worldwide via the water and sediments inside ship ballast tanks. Nevertheless, the ecological functions and assembly processes of bacterial communities in ballast water and sediments remain poorly understood. Here, we investigated the bacterial composition, community assembly processes, and putative functions through analyses of 70 ballast water and sediment samples obtained from various ships. The results showed that the ballast sediments contained a higher diversity of bacterial communities, whereas the ballast water was characterized by the dominance of Proteobacteria. Both the composition and potential function structures of bacterial communities were clearly different between the ballast water and sediment samples. The ballast water exhibited an abundance of microorganisms that involved in sulfur oxidation, whereas the bacterial species associated with nitrogen metabolism were abundant in the sediments. Co-occurrence network analysis revealed that the communities in ballast sediment samples possessed more complex network structures with higher modularity and positive associations among bacterial populations. Stochastic processes, especially the dispersal limitation process played the most important influence in the assembly of the communities in ballast water. Meanwhile, the bacterial communities in the ballast sediments were primarily governed by the homogeneous selection of determinacy. The results from this study will help us understand the ecological processes related to the bacterial communities in the ballast tanks and provide a foundation for the management of ballast water and sediments.
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Affiliation(s)
- Baoyi Lv
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China.
| | - Jianhong Shi
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Tao Li
- China Waterborne Transport Research Institute, Beijing 100088, China
| | - Lili Ren
- China Waterborne Transport Research Institute, Beijing 100088, China
| | - Wen Tian
- Jiangyin Customs, Jiangyin 214400, China
| | - Xiaolan Lu
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | | | - Yuxue Cui
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Ting Jiang
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
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12
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Microbial Community Structure and Ecological Networks during Simulation of Diatom Sinking. Microorganisms 2022; 10:microorganisms10030639. [PMID: 35336213 PMCID: PMC8949005 DOI: 10.3390/microorganisms10030639] [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: 02/23/2022] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 11/17/2022] Open
Abstract
Microbial-mediated utilization of particulate organic matter (POM) during its downward transport from the surface to the deep ocean constitutes a critical component of the global ocean carbon cycle. However, it remains unclear as to how high hydrostatic pressure (HHP) and low temperature (LT) with the sinking particles affects community structure and network interactions of the particle-attached microorganisms (PAM) and those free-living microorganisms (FLM) in the surrounding water. In this study, we investigated microbial succession and network interactions in experiments simulating POM sinking in the ocean. Diatom-derived 13C- and 12C-labeled POM were used to incubate surface water microbial communities from the East China Sea (ECS) under pressure (temperature) of 0.1 (25 °C), 20 (4 °C), and 40 (4 °C) MPa (megapascal). Our results show that the diversity and species richness of the PAM and FLM communities decreased significantly with HHP and LT. Microbial community analysis indicated an increase in the relative abundance of Bacteroidetes at high pressure (40 MPa), mostly at the expense of Gammaproteobacteria, Alphaproteobacteria, and Gracilibacteria at atmospheric pressure. Hydrostatic pressure and temperature affected lifestyle preferences between particle-attached (PA) and free-living (FL) microbes. Ecological network analysis showed that HHP and LT enhanced microbial network interactions and resulted in higher vulnerability to networks of the PAM communities and more resilience of those of the FLM communities. Most interestingly, the PAM communities occupied most of the module hubs of the networks, whereas the FLM communities mainly served as connectors of the modules, suggesting their different ecological roles of the two groups of microbes. These results provided novel insights into how HHP and LT affected microbial community dynamics, ecological networks during POM sinking, and the implications for carbon cycling in the ocean.
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13
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Guo Z, Wang L, Jiang Z, Liang Z. Comparison studies of epiphytic microbial communities on four macroalgae and their rocky substrates. MARINE POLLUTION BULLETIN 2022; 176:113435. [PMID: 35183021 DOI: 10.1016/j.marpolbul.2022.113435] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 01/09/2022] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
Macroalgae and their rocky substrates both support diverse and abundant microbiota, performing essential ecological functions in marine ecosystem. However, the differences in the epiphytic microbial communities on macroalgae and rocky substrate are still poorly understood. In this study, the epiphytic microbial communities on four macroalgae (Corallina officinalis, Rhodomela confervoides, Sargassum thunbergii, and Ulva linza) and their rocky substrates from Weihai coast zone were characterized using high-throughput sequencing technology. The results showed that the alpha diversity indices were greater in rocky substrates than that in macroalgae. The microbial similarities among macroalgae and rocky substrate groups tended to decrease from the high taxonomic ranks to lower ranks, only 22.69% of the total amplicon sequence variants (ASVs) were shared between them. The functional analysis revealed that the microbiotas were mainly involved in metabolic activities. This study would provide the theoretical foundation for macroalgal cultivation and algal reef applications.
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Affiliation(s)
- Zhansheng Guo
- Marine College, Shandong University, Weihai 264209, China
| | - Lu Wang
- Marine College, Shandong University, Weihai 264209, China
| | - Zhaoyang Jiang
- Marine College, Shandong University, Weihai 264209, China.
| | - Zhenlin Liang
- Marine College, Shandong University, Weihai 264209, China.
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14
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Hung CM, Huang CP, Chen CW, Dong CD. Degradation of organic contaminants in marine sediments by peroxymonosulfate over LaFeO 3 nanoparticles supported on water caltrop shell-derived biochar and the associated microbial community responses. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126553. [PMID: 34273879 DOI: 10.1016/j.jhazmat.2021.126553] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 06/21/2021] [Accepted: 06/25/2021] [Indexed: 06/13/2023]
Abstract
Sediment is an important final repository of persistent organic pollutants such as polycyclic aromatic hydrocarbons (PAHs). Herein, a novel catalyst of LaFeO3 nanoparticles supported on biochar was synthesized from water caltrop shell by chemical precipitation. The composite (LFBC) was used as peroxymonosulfate (PMS) activator to oxidize PAHs in real marine sediments. Systematic surface characterization confirmed the immobilization of well crystalline nano LaFeO3 particles onto the biochar surface. Under optimal conditions, i.e., [PMS] = 3 × 10-4 M, [LFBC] = 0.75 g/L, pH 6.0, and seawater, the total PAH degradation efficiency was 90%, while that of 2-, 3-, 4-, 5-, and 6-ring PAHs was 52%, 61%, 66%, 56%, and 29%, respectively, in 24 h. The Langmuir-Hinshelwood equation better predicted the PAHs degradation kinetics over LFBC by PMS. Interactions between surface oxygen species at LaFeO3 defective sites and the graphitized biochar network facilitated the PAHs degradation. Furthermore, changes in the bacterial community during the LFBC/PMS treatment were highlighted to assess the sustainable development of the sediment ecosystem. The LFBC/PMS process enhanced the biological richness and diversity of sediment eco-systems. The major phylum was Proteobacteria initially, while Hyphomonas was the genera after LFBC/PMS treatment of the sediment.
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Affiliation(s)
- Chang-Mao Hung
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chin-Pao Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark, USA
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
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15
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Jokanović S, Kajan K, Perović S, Ivanić M, Mačić V, Orlić S. Anthropogenic influence on the environmental health along Montenegro coast based on the bacterial and chemical characterization. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 271:116383. [PMID: 33387780 DOI: 10.1016/j.envpol.2020.116383] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 12/15/2020] [Accepted: 12/22/2020] [Indexed: 06/12/2023]
Abstract
Coastal marine sediments are particularly exposed to human activities. The function of a coastal ecosystem is largely affected by eutrophication, wastewater discharges, chemical pollution, port activities, industry and tourism. Bacterial classification can be used as a measure in assessing the harmful effects on the ecosystem. This study provided insight into the environmental health of the coastal region of Montenegro analyzing the possible impact of PAHs and PCBs upon the bacterial community diversity and function as well as nutrients. Two stations at the shipyards were defined as very high PAH polluted together with PCB concentration exceeding threshold values. The bacterial community at the OTU level clustered together all stations except the most polluted site (SBL), the main tourist destination in Montenegro (BDV) and the estuary site (ADB) forming the independent clusters. Bacterial community based on the OTU level was driven by PAHs, TOC and silt content. The lowest richness and diversity were indicated at the site with the highest concentration of PAHs and PCBs with the highest abundance of Alphaproteobacteria followed by Gammaproteobacteria. OTUs affiliated to phyla BRC1, Dadabacteria and Spirochaetes were present with a total abundance higher than 1% only at the most polluted site indicating their persistence and possible potential for degradation of aromatic compounds. To compare functional capabilities potentially related to biodegradation of aromatic compounds and active transport systems, PICRUSt was used to predict metagenomes of the sediments. From our data, we identified specific bacterial community and predicted metabolic pathways that give us a picture of the environmental health along the coast of Montenegro, which provides us a new insight into human-induced pollution impacts on the coastal ecosystem.
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Affiliation(s)
- Sandra Jokanović
- Institute of Marine Biology, University of Montenegro, 85 330, Kotor, Montenegro
| | - Katarina Kajan
- Ruđer Bošković Institute, Division of Materials Chemistry, 10 000, Zagreb, Croatia; Center of Excellence for Science and Technology-Integration of Mediterranean Region (STIM), University of Split, 21 000, Split, Croatia
| | - Svetlana Perović
- Faculty of Science and Mathematics, University of Montenegro, 81 000, Podgorica, Montenegro
| | - Maja Ivanić
- Ruđer Bošković Institute, Division for Marine and Environmental Research, 10 000, Zagreb, Croatia
| | - Vesna Mačić
- Institute of Marine Biology, University of Montenegro, 85 330, Kotor, Montenegro
| | - Sandi Orlić
- Ruđer Bošković Institute, Division of Materials Chemistry, 10 000, Zagreb, Croatia; Center of Excellence for Science and Technology-Integration of Mediterranean Region (STIM), University of Split, 21 000, Split, Croatia.
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