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Hu R, Ren M, Liang S, Zou S, Li D. Effects of antibiotic resistance genes on health risks of rivers in habitat of wild animals under human disturbance - based on analysis of antibiotic resistance genes and virulence factors in microbes of river sediments. Ecol Evol 2024; 14:e11435. [PMID: 38799388 PMCID: PMC11126646 DOI: 10.1002/ece3.11435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 04/21/2024] [Accepted: 05/03/2024] [Indexed: 05/29/2024] Open
Abstract
Studying the ecological risk of antibiotic resistance genes (ARGs) to wild animals from human disturbance (HD) is an important aspect of "One Health". The highest risk level of ARGs is reflected in pathogenic antibiotic-resistant bacteria (PARBs). Metagenomics was used to analyze the characteristics of PARBs in river sediments. Then, the total contribution of ARGs and virulence factors (VFs) were assessed to determine the health risk of PARBs to the rivers. Results showed that HD increased the diversity and total relative abundance of ARG groups, as well as increased the kinds of PARBs, their total relative abundance, and their gene numbers of ARGs and VFs. The total health risks of PARBs in wild habitat group (CK group), agriculture group (WA group), grazing group (WG group), and domestic sewage group (WS group) were 0.067 × 10-3, -1.55 × 10-3, 87.93 × 10-3, and 153.53 × 10-3, respectively. Grazing and domestic sewage increased the health risk of PARBs. However, agriculture did not increase the total health risk of the rivers, but agriculture also introduced new pathogenic mechanisms and increased the range of drug resistance. More serious was the increased transfer risk of ARGs in the PARBs from the rivers to wild animals under agriculture and grazing. If the ARGs in the PARBs are transferred from the rivers under HD to wild animals, then wild animals may face severe challenges of acquiring new pathogenic mechanisms and developing resistance to antibiotics. Further analysis showed that the total phosphorus (TP) and dissolved organic nitrogen (DON) were related to the risk of ARGs. Therefore, controlling human emissions of TP and DON could reduce the health risk of rivers.
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Affiliation(s)
- Rongpan Hu
- Key Laboratory of Southwest China Wildlife Resources Conservation of Ministry of EducationChina West Normal UniversityNanchongChina
| | - Minxing Ren
- Key Laboratory of Southwest China Wildlife Resources Conservation of Ministry of EducationChina West Normal UniversityNanchongChina
| | - Sumei Liang
- Key Laboratory of Southwest China Wildlife Resources Conservation of Ministry of EducationChina West Normal UniversityNanchongChina
| | - Shuzhen Zou
- Key Laboratory of Southwest China Wildlife Resources Conservation of Ministry of EducationChina West Normal UniversityNanchongChina
- Key Laboratory of Conservation Biology of Rhinopithecus Roxellana at China West Normal University of Sichuan ProvinceChina West Normal UniversityNanchongChina
| | - Dayong Li
- Key Laboratory of Southwest China Wildlife Resources Conservation of Ministry of EducationChina West Normal UniversityNanchongChina
- Key Laboratory of Conservation Biology of Rhinopithecus Roxellana at China West Normal University of Sichuan ProvinceChina West Normal UniversityNanchongChina
- Liziping Giant Panda's Ecology and Conservation Observation and Research Station of Sichuan ProvinceScience and Technology Department of Sichuan ProvinceChengduChina
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Zhang S, Wang Z, Yi L, Ye X, Suo F, Chen X, Lu X. Bacterial response to the combined pollution of benzo[a]pyrene and decabromodiphenyl ether in soil under flooding anaerobic condition. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133137. [PMID: 38056265 DOI: 10.1016/j.jhazmat.2023.133137] [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: 09/04/2023] [Revised: 11/26/2023] [Accepted: 11/28/2023] [Indexed: 12/08/2023]
Abstract
This study investigated the interaction between the co-pollutants of Benzo[a]pyrene (BaP) and decabromodiphenyl ether (BDE-209) and the bacterial community in soil under flooding anaerobic condition. Three levels of combined pollution (at nominal concentrations of 1, 5, and 25 mg/kg, respectively, for each pollutant), their corresponding sterilized controls, and a blank control (CK) were set up. During the incubation time of 270 days, BaP attenuated more easily than BDE-209. The second-order rate constant of BaP attenuation was negatively correlated with the Ln value of initial BaP concentration. Maximal difference in bacterial community occurred between the CK soil and the highly polluted soil. Desulfomonilaceae, Parcubacteria and Rhodanobacter were probably involved in BaP and BDE-209 degradation, while Nitrosomonadaceae, Phenylobacterium and Mitochondria were significantly suppressed by BaP and BDE-209 or their degrading products. Genes narI, bcrC, fadJ, had, dmpC, narG and CfrA were involved in the degradation of BaP and BDE-209. Impacts of BaP and BDE-209 on metabolisms of carbon, nitrogen and sulfur were not significant. The results provide guidance for the management and remediation of the contaminated soil.
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Affiliation(s)
- Shuai Zhang
- Ministry of Education Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China
| | - Zhaoyang Wang
- Ministry of Education Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China
| | - Lijin Yi
- Ministry of Education Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China
| | - Xiangyu Ye
- Ministry of Education Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China
| | - Fanyu Suo
- Ministry of Education Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China
| | - Xuexia Chen
- Ministry of Education Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China
| | - Xiaoxia Lu
- Ministry of Education Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China.
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Ivanić M, Mikac N, Lučić M, Durn G, Sondi I. Size-dependent distribution of metal(loid)s in recent marine sediments of the Adriatic sea. CHEMOSPHERE 2023; 345:140461. [PMID: 37865202 DOI: 10.1016/j.chemosphere.2023.140461] [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: 07/21/2023] [Revised: 10/13/2023] [Accepted: 10/14/2023] [Indexed: 10/23/2023]
Abstract
This paper investigates occurrence of metal(loid)s, and size-dependent changes in their concentration in recent marine sediments from coastal and open-sea environments in the eastern Adriatic. Size fractionation of sediments was performed after removal of organic matter (OM), and the individual fractions, comprising particles below 8 μm, 4 μm, 2 μm, 1 μm and 0.45 μm, were analysed using HR ICP-MS. The concentrations of most elements increased with decreasing particle size, as a result of accumulation of clay minerals and Fe and Mn (oxyhydr)oxides. A decrease in concentrations was observed for Ba, Sr, Ti and U, due to lowering of the carbonate content and presence in the coarse-grained and heavy mineral fraction. The highest element concentrations were determined in the fraction comprising particles below 1 μm. Occasionally, depending on the sedimentological environment and/or the element in question, the peak concentrations occurred in the <2 μm or <0.45 μm fraction. The lowest size-dependent enrichment was observed for elements associated with aluminosilicates (Al, Be, Cs, Co, Fe, K, Li, Rb). A different size-dependent behaviour of the elements was observed between deep-sea areas and shallow environments under greater coastal influence, mainly due to differences in sediment sorting, and between the northern and central vs. southern Adriatic due to the different catchment geologies. The Fe and Mn (oxyhydr)oxides, abundant in the deep-sea sediments, played an important role in the geochemical cycle of As, Cd, Co, Mo, Sb and V.
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Affiliation(s)
- Maja Ivanić
- Ruđer Bošković Institute, Division for Marine and Environmental Research, Bijenička 54, 10000, Zagreb, Croatia.
| | - Nevenka Mikac
- Ruđer Bošković Institute, Division for Marine and Environmental Research, Bijenička 54, 10000, Zagreb, Croatia
| | - Mavro Lučić
- Ruđer Bošković Institute, Division for Marine and Environmental Research, Bijenička 54, 10000, Zagreb, Croatia
| | - Goran Durn
- Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Pierottijeva 6, 10000, Zagreb, Croatia
| | - Ivan Sondi
- Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Pierottijeva 6, 10000, Zagreb, Croatia
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Archaeal and Extremophilic Bacteria from Different Archaeological Excavation Sites. Int J Mol Sci 2023; 24:ijms24065519. [PMID: 36982593 PMCID: PMC10052888 DOI: 10.3390/ijms24065519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/03/2023] [Accepted: 03/09/2023] [Indexed: 03/15/2023] Open
Abstract
Beside natural factors, human activities are important for the development of microbiomes. Thus, local soil bacterial communities are affected by recent activities such as agriculture, mining and industry. In addition, ancient human impacts dating back centuries or millennia have changed soils and can emboss the recent bacterial communities up to now, representing a certain long-term “memory of soil”. Soil samples from five different archaeological excavation places were investigated for the presence of Archaea with a Next Generation Sequencing (NGS) analysis of the DNA coding for 16S r-RNA sequences. It was found that the abundance of Archaea differs strongly between less than one and more than 40 percent of bacteria. A Principal Component Analysis (PCA) of all samples shows that the archaeological excavation places can be distinguished from each other by the archaeal component of soil bacterial communities, which presents a typical pattern for each place. Most samples are marked by the dominance of Crenarchaeota, which are presented mainly by ammonia-related types. High contents of Nanoarchaeaota have been observed in one ash deposit of a historical saline and all samples of a historical tannery area. These samples are also marked by a significant presence of Dadabacteria. The specific abundancies of special Archaea—among them ammonia-oxidizing and sulphur-related types—are due obviously to former human activities and support the concept of the “ecological memory of soil”.
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Zárate A, Molina V, Valdés J, Icaza G, Vega SE, Castillo A, Ugalde JA, Dorador C. Spatial co-occurrence patterns of benthic microbial assemblage in response to trace metals in the Atacama Desert Coastline. Front Microbiol 2023; 13:1020491. [PMID: 36726571 PMCID: PMC9885135 DOI: 10.3389/fmicb.2022.1020491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 12/31/2022] [Indexed: 01/17/2023] Open
Abstract
Taxonomic and functional microbial communities may respond differently to anthropogenic coastal impacts, but ecological quality monitoring assessments using environmental DNA and RNA (eDNA/eRNA) in response to pollution are poorly understood. In the present study, we investigated the utility of the co-occurrence network approach's to comprehensively explore both structure and potential functions of benthic marine microbial communities and their responses to Cu and Fe fractioning from two sediment deposition coastal zones of northern Chile via 16S rRNA gene metabarcoding. The results revealed substantial differences in the microbial communities, with the predominance of two distinct module hubs based on study zone. This indicates that habitat influences microbial co-occurrence networks. Indeed, the discriminant analysis allowed us to identify keystone taxa with significant differences in eDNA and eRNA comparison between sampled zones, revealing that Beggiatoaceae, Carnobacteriaceae, and Nitrosococcaceae were the primary representatives from Off Loa, whereas Enterobacteriaceae, Corynebacteriaceae, Latescibacteraceae, and Clostridiaceae were the families responsible for the observed changes in Mejillones Bay. The quantitative evidence from the multivariate analyses supports that the benthic microbial assemblages' features were linked to specific environments associated with Cu and Fe fractions, mainly in the Bay. Furthermore, the predicted functional microbial structure suggested that transporters and DNA repair allow the communities to respond to metals and endure the interacting variable environmental factors like dissolved oxygen, temperature, and salinity. Moreover, some active taxa recovered are associated with anthropogenic impact, potentially harboring antibiotic resistance and other threats in the coastal zone. Overall, the method of scoping eRNA in parallel with eDNA applied here has the capacity to significantly enhance the spatial and functional understanding of real-time microbial assemblages and, in turn, would have the potential to increase the acuity of biomonitoring programs key to responding to immediate management needs for the marine environment.
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Affiliation(s)
- Ana Zárate
- Doctorado en Ciencias Aplicadas mención Sistemas Marinos Costeros, Universidad de Antofagasta, Antofagasta, Chile,Laboratorio de Complejidad Microbiana y Ecología Funcional, Instituto Antofagasta and Centro de Bioingeniería y Biotecnología (CeBiB), Universidad de Antofagasta, Antofagasta, Chile,Laboratorio de Biotecnología en Ambientes Extremos, Centro de Excelencia en Medicina Traslacional, Universidad de la Frontera, Temuco, Chile,*Correspondence: Ana Zárate, ✉
| | - Verónica Molina
- Departamento de Ciencias y Geografía, Facultad de Ciencias Naturales y Exactas y HUB Ambiental UPLA, Universidad de Playa Ancha, Valparaíso, Chile,Centro de Investigación Oceanográfica COPAS COASTAL, Universidad de Concepción, Concepción, Chile,Verónica Molina, ✉
| | - Jorge Valdés
- Laboratorio de Sedimentología y Paleoambientes, Facultad de Ciencias del Mar y de Recursos Biológicos, Instituto de Ciencias Naturales A. von Humboldt, Universidad de Antofagasta, Antofagasta, Chile
| | - Gonzalo Icaza
- Laboratorio de Complejidad Microbiana y Ecología Funcional, Instituto Antofagasta and Centro de Bioingeniería y Biotecnología (CeBiB), Universidad de Antofagasta, Antofagasta, Chile
| | | | - Alexis Castillo
- Centro de Investigación y Estudios Avanzados del Maule, Vicerrectoría de Investigación de Investigación y Posgrado, Universidad Católica del Maule, Campus San Miguel, Talca, Chile,J’EAI CHARISMA (IRD-France, UMNG-Colombia, UA-Chile, UCM-Chile, UCH-Chile, IGP-Peru, UPCH-Peru) and Nucleo Milenio UPWELL, Concepción, Chile
| | - Juan A. Ugalde
- Center for Bioinformatics and Integrative Biology, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
| | - Cristina Dorador
- Laboratorio de Complejidad Microbiana y Ecología Funcional, Instituto Antofagasta and Centro de Bioingeniería y Biotecnología (CeBiB), Universidad de Antofagasta, Antofagasta, Chile,Departamento de Biotecnología, Facultad de Ciencias del Mar y Recursos Biológicos, Universidad de Antofagasta, Antofagasta, Chile,Cristina Dorador, ✉
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Mikac N, Furdek Turk M, Petrović D, Bigović M, Krivokapić S. First assessment of butyltins (BuTs) contamination of the Montenegrin coast (Southeast Adriatic): Tributyltin (TBT) poses a threat to the marine ecosystem. MARINE POLLUTION BULLETIN 2022; 185:114270. [PMID: 36347191 DOI: 10.1016/j.marpolbul.2022.114270] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/13/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
This study presents the first assessment of butyltins (BuTs) pollution of the Montenegrin coast. The distribution of tributyltin (TBT), dibutyltin (DBT) and monobutyltin (MBT) was investigated in mussels, sediments and water overlying sediment after the sediment resuspension. The results showed that the investigated sites (marinas, ports, shipyards) are contaminated with BuTs (19-402 ng (Sn)/g in mussels; 43-20,641 ng (Sn)/g in sediments; 9-566 ng (Sn)/L in overlying waters). The measured TBT concentrations indicate that toxic effects on marine organisms are expected at most locations. The simultaneous analysis of BuTs and total Sn in sediment cores allowed the assessment of TBT historical input, while it was demonstrated that resuspension of contaminated sediments leads to the release of all BuTs into the water column. This study shows that, despite the ban of TBT-based antifouling paints more than a decade ago, pollution of the marine environment with TBT is still a problem and regular monitoring remains essential.
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Affiliation(s)
- Nevenka Mikac
- Division for Marine and Environmental Research, Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - Martina Furdek Turk
- Division for Marine and Environmental Research, Ruđer Bošković Institute, 10000 Zagreb, Croatia.
| | - Dragana Petrović
- Faculty of Natural Sciences and Mathematics, University of Montenegro, 81000 Podgorica, Montenegro
| | - Miljan Bigović
- Faculty of Natural Sciences and Mathematics, University of Montenegro, 81000 Podgorica, Montenegro
| | - Sladjana Krivokapić
- Faculty of Natural Sciences and Mathematics, University of Montenegro, 81000 Podgorica, Montenegro
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Bianco F, Race M, Papirio S, Oleszczuk P, Esposito G. Coupling of desorption of phenanthrene from marine sediments and biodegradation of the sediment washing solution in a novel biochar immobilized-cell reactor. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 308:119621. [PMID: 35709914 DOI: 10.1016/j.envpol.2022.119621] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 05/03/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
The recurrent dredging of marine sediments needs the use of ex-situ technologies such as sediment washing (SW) to effectively remove polycyclic aromatic hydrocarbons. Notwithstanding, the large volumes of generated spent SW effluents require adequate treatment by employing highly-efficient, inexpensive and environmentally-friendly solutions. This study proposes the phenanthrene (PHE) desorption from sediments using Tween® 80 (TW80) as extracting agent and the treatment of the resulting spent SW solution in a biochar (BC) immobilized-cell bioreactor. The SW process reached the highest PHE removal of about 91% using a surfactant solution containing 10,800 mg L-1 of TW80. The generated amount of spent PHE-polluted SW solution can be controlled by keeping a solid to liquid ratio of 1:4. A PHE degradation of up to 96% was subsequently achieved after 43 days of continuous reactor operation, aerobically treating the TW80 solution in the BC immobilized-cell bioreactor with a hydraulic retention time of 3.5 days. Brevundimonas, Chryseobacterium, Dysgonomonas, Nubsella, and both uncultured Weeksellaceae and Xanthobacteraceae genera were mainly involved in PHE biodegradation. A rough economic study showed a total cost of 342.60 € ton-1 of sediment, including the SW operations, TW80 and BC supply and the biological treatment of the SW solution.
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Affiliation(s)
- Francesco Bianco
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043, Cassino, Italy.
| | - Marco Race
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043, Cassino, Italy
| | - Stefano Papirio
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125, Napoli, Italy
| | - Patryk Oleszczuk
- Department of Radiochemistry and Environmental Chemistry, Maria Curie-Skłodowska University, 3 Maria Curie-Skłodowska Square, 20031, Lublin, Poland
| | - Giovanni Esposito
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125, Napoli, Italy
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Mikac N, Sondi I, Vdović N, Pikelj K, Ivanić M, Lučić M, Bačić N, Turk MF, Škapin DS, Krivokapić S. Origin and history of trace elements accumulation in recent Mediterranean sediments under heavy human impact. A case study of the Boka Kotorska Bay (Southeast Adriatic Sea). MARINE POLLUTION BULLETIN 2022; 179:113702. [PMID: 35588545 DOI: 10.1016/j.marpolbul.2022.113702] [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: 01/13/2022] [Revised: 04/21/2022] [Accepted: 04/22/2022] [Indexed: 06/15/2023]
Abstract
The history of metal pollution in the semi-enclosed and human-influenced marine system of the Boka Kotorska Bay (Southern Adriatic) was studied considering geological composition of the surrounding catchment, the sedimentation rate and the mineralogical and early diagenetic processes in the recent sediments. The determination of background concentrations of metals, undertaken for the first time in this environment, proved to be particularly important for Ni and Cr, which are naturally enriched in the sediments of the southern Adriatic. The results showed widespread moderate contamination with Pb and Sn since the 1970s, while the upper layers of sediments near shipyards, marinas and urban areas were more contaminated with Sn, Cu, Pb, Zn, Cd, As, Sb and Mo. The transport of material through the narrow straits separating different parts of Boka Kotorska Bay resulted in a different geochemical composition of the smaller bays and a limited distribution of contaminated sediments from local sources.
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Affiliation(s)
- Nevenka Mikac
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia
| | - Ivan Sondi
- Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Zagreb, Croatia.
| | - Neda Vdović
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia
| | - Kristina Pikelj
- Department of Geology, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | - Maja Ivanić
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia
| | - Mavro Lučić
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia
| | - Niko Bačić
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia
| | - Martina Furdek Turk
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, Croatia
| | - D Srečo Škapin
- Advanced Materials Department, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Slađana Krivokapić
- Department of Biology, Faculty of Natural Science, University of Montenegro, Podgorica, Montenegro
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9
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Koner S, Chen JS, Hsu BM, Rathod J, Huang SW, Chien HY, Hussain B, Chan MWY. Depth-resolved microbial diversity and functional profiles of trichloroethylene-contaminated soils for Biolog EcoPlate-based biostimulation strategy. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127266. [PMID: 34600373 DOI: 10.1016/j.jhazmat.2021.127266] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 06/13/2023]
Abstract
This study explores the toxic effect of TCE at different depths of sub-surface soil and underpins microbial community-level suitable carbon (C)-sources that provided directionality to the in situ biostimulation effort via augmentation strategy for effective TCE remediation in soil. The impacts on resident microbial communities and their functional profiles that govern the TCE biodegradation process were identified. Highly contaminated PW01 soil (9 m depth) had severely limited microbial diversity and was enriched in Proteobacteria and Firmicutes. The abundance of TCE degradation-associated genera was observed in all contaminated samples, and the abundance of TCE-degradation-related taxa were positively correlated with soil TCE contamination levels. Community-level metabolic activity associated with the utilization of diverse external C-sources was directly influenced by TCE concentration and soil depth. Multivariate data analysis revealed that the functional genus, TCE concentration, and selected available C substrate uptake capacity correlated in soil samples. Pearson's correlation tests revealed that C sources such as L-arginine, phenylethylamine and γ-hydroxybutyric acid utilization trait exhibited significant positive correlations with chloroalkane and chloroalkene degradation pathway abundance. Ultimately, depth and TCE contamination level-associated soil microbiota and their most preferred C-source understanding could add to facilitate effective biostimulation via external nutrient amendment for efficient in situ TCE degradation.
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Affiliation(s)
- Suprokash Koner
- Department of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan; Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi, Taiwan
| | - Jung-Sheng Chen
- Department of Medical Research, E-Da Hospital, Kaohsiung, Taiwan
| | - Bing-Mu Hsu
- Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi, Taiwan.
| | - Jagat Rathod
- Department of Earth Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Shih-Wei Huang
- Center for environmental Toxin and Emerging Contaminant Research, Cheng Shiu University, Kaohsiung, Taiwan; Super Micro Research and Technology Center, Cheng Shiu University, Kaohsiung, Taiwan
| | - Hua-Yi Chien
- Environmental Technology Development Department, Taiwan VCM Corporation, Kaohsiung, Taiwan; Department of Environmental Sciences and Engineering, Fooyin University, Kaohsiung, Taiwan
| | - Bashir Hussain
- Department of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan; Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi, Taiwan
| | - Michael W Y Chan
- Department of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan
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Vipindas PV, Jabir T, Rahiman KMM, Rehitha TV, Sudheesh V, Jesmi Y, Hatha AAM. Impact of anthropogenic organic matter on bacterial community distribution in the continental shelf sediments of southeastern Arabian Sea. MARINE POLLUTION BULLETIN 2022; 174:113227. [PMID: 34883441 DOI: 10.1016/j.marpolbul.2021.113227] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 11/24/2021] [Accepted: 11/27/2021] [Indexed: 06/13/2023]
Abstract
The objective of this study was to understand the influence of anthropogenic organic matter on the spatial distribution microbial community in the continental shelf sediments of the Southeastern Arabian Sea (SEAS). The sediment samples were taken from the inner shelf (30 m depths) and outer shelf (100-200 m). The C:Nmolar ratio of the sediment displayed a significant variation between the inner and outer shelf and a higher terrestrial organic input in the inner shelf. Microbial community composition also showed a significant variation between the inner and outer shelf (p ≤ 0.05). Proteobacteria was the dominant phylum in the outer shelf sediments (42.5%), whereas Desulfobacterota (21.9%) was the dominant phylum in the inner shelf. Complex terrestrial organic matter degrading bacteria dominated the inner shelf, whereas oligophilic microbial community and autochthonous organic matter utilizing bacteria dominated the outer shelf. Thus the source of organic matter controlled the microbial distribution in the SEAS.
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Affiliation(s)
- P V Vipindas
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala 682016, India.
| | - T Jabir
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala 682016, India
| | - K M Mujeeb Rahiman
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala 682016, India
| | - T V Rehitha
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala 682016, India
| | - V Sudheesh
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala 682016, India
| | - Y Jesmi
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala 682016, India
| | - A A Mohamed Hatha
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala 682016, India.
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