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Su W, Yu Q, Yang J, Han Q, Wang S, Heděnec P, Wang X, Wan-Yan R, Li H. Cadaverine and putrescine exposure influence carbon and nitrogen cycling genes in water and sediment of the Yellow River. J Environ Sci (China) 2024; 142:236-247. [PMID: 38527889 DOI: 10.1016/j.jes.2023.06.016] [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: 02/05/2023] [Revised: 06/09/2023] [Accepted: 06/11/2023] [Indexed: 03/27/2024]
Abstract
The response patterns of microbial functional genes involved in biogeochemical cycles to cadaver decay is a central topic of recent environmental sciences. However, the response mechanisms and pathways of the functional genes associated with the carbon (C) and nitrogen (N) cycling to cadaveric substances such as cadaverine and putrescine remain unclear. This study explored the variation of functional genes associated with C fixation, C degradation and N cycling and their influencing factors under cadaverine, putrescine and mixed treatments. Our results showed only putrescine significantly increased the alpha diversity of C fixation genes, while reducing the alpha diversity of N cycling genes in sediment. For the C cycling, the mixed treatment significantly decreased the total abundance of reductive acetyl-CoA pathway genes (i.e., acsB and acsE) and lig gene linked to lignin degradation in water, while only significantly increasing the hydroxypropionate-hydroxybutylate cycle (i.e., accA) gene abundance in sediment. For the N cycling, mixed treatment significantly decreased the abundance of the nitrification (i.e., amoB), denitrification (i.e., nirS3) genes in water and the assimilation pathway gene (i.e., gdhA) in sediment. Environmental factors (i.e., total carbon and total nitrogen) were all negatively associated with the genes of C and N cycling. Therefore, cadaverine and putrescine exposure may inhibit the pathway in C fixation and N cycling, while promoting C degradation. These findings can offer some new insight for the management of amine pollution caused by animal cadavers.
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Affiliation(s)
- Wanghong Su
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Qiaoling Yu
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Jiawei Yang
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Qian Han
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Sijie Wang
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Petr Heděnec
- Institute for Tropical Biodiversity and Sustainable Development, University Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Xiaochen Wang
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Ruijun Wan-Yan
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Huan Li
- School of Public Health, Lanzhou University, Lanzhou 730000, China; State Key Laboratory of Grassland Agro-ecosystems, Center for Grassland Microbiome, College of pastoral agriculture science and technology, Lanzhou University, Lanzhou 730000, China.
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Ohore OE, Wang Y, Wei Y, Sanganyado E, Shafiq M, Jiao X, Nwankwegu AS, Liu W, Wang Z. Ecological mechanisms of sedimental microbial biodiversity shift and the role of antimicrobial resistance genes in modulating microbial turnover. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 325:116547. [PMID: 36419283 DOI: 10.1016/j.jenvman.2022.116547] [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: 07/27/2022] [Revised: 09/30/2022] [Accepted: 10/14/2022] [Indexed: 11/07/2022]
Abstract
The mechanisms of phylogenetic turnover of microbial communities to environmental perturbations in sediments remain unclear. In this study, the molecular mechanisms of phylogenetic turnover, and impact of antibiotics and antibiotic resistance genes (ARGs) on the modification of microbial assemblages were unravelled. We investigated 306 ARGs, 8 transposases, and 4 integron integrases, bacteria, and eukaryotic diversity through high-throughput quantitative PCR and illumina sequencing, 21 antibiotics and 3 tetracycline byproducts. The freshwater and estuary ecosystems were mainly dominated by genus Sulfurovum and colonised by closely related species compared with the estuary (closeness centrality = 0.42 vs. 0.46), which was dominated by genus Mycobacterium. Eighty-six percent of the ecological process in the bacterial community was driven by stochastic processes, while the rest was driven by deterministic processes. Environmental-related concentrations of antibiotics (0.15-32.53 ng/g) stimulated the proliferation of ARGs which potentially modulated the microbial community assembly. ARG acquisition significantly (P < 0.001) increased eukaryotic diversity through protection mechanisms. ARGs showed complex interrelationships with the microbial communities, and phylum arthropods and Nematea demonstrated the strongest ARG acquisition potential. This study provides key insights for environmental policymakers into understanding the ecological impact of antibiotics and the role of ARGs in modulating the phylogenetic turnover of microbial communities and trophic transfer mechanisms.
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Affiliation(s)
- Okugbe Ebiotubo Ohore
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Protection, Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China.
| | - Yuwen Wang
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Protection, Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Yunjie Wei
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Protection, Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Edmond Sanganyado
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Protection, Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Muhammad Shafiq
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, 515041, China
| | - Xiaoyang Jiao
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, 515041, China
| | - Amechi S Nwankwegu
- College of Resources and Environment, Southwest University, Chongqing, 400716, China
| | - Wenhua Liu
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Protection, Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458, China
| | - Zhen Wang
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Protection, Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China.
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Bourhane Z, Lanzén A, Cagnon C, Ben Said O, Mahmoudi E, Coulon F, Atai E, Borja A, Cravo-Laureau C, Duran R. Microbial diversity alteration reveals biomarkers of contamination in soil-river-lake continuum. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126789. [PMID: 34365235 DOI: 10.1016/j.jhazmat.2021.126789] [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: 02/16/2021] [Revised: 07/27/2021] [Accepted: 07/28/2021] [Indexed: 05/21/2023]
Abstract
Microbial communities inhabiting soil-water-sediment continuum in coastal areas provide important ecosystem services. Their adaptation in response to environmental stressors, particularly mitigating the impact of pollutants discharged from human activities, has been considered for the development of microbial biomonitoring tools, but their use is still in the infancy. Here, chemical and molecular (16S rRNA gene metabarcoding) approaches were combined in order to determine the impact of pollutants on microbial assemblages inhabiting the aquatic network of a soil-water-sediment continuum around the Ichkeul Lake (Tunisia), an area highly impacted by human activities. Samples were collected within the soil-river-lake continuum at three stations in dry (summer) and wet (winter) seasons. The contaminant pressure index (PI), which integrates Polycyclic aromatic hydrocarbons (PAHs), alkanes, Organochlorine pesticides (OCPs) and metal contents, and the microbial pressure index microgAMBI, based on bacterial community structure, showed significant correlation with contamination level and differences between seasons. The comparison of prokaryotic communities further revealed specific assemblages for soil, river and lake sediments. Correlation analyses identified potential "specialist" genera for the different compartments, whose abundances were correlated with the pollutant type found. Additionally, PICRUSt analysis revealed the metabolic potential for pollutant transformation or degradation of the identified "specialist" species, providing information to estimate the recovery capacity of the ecosystem. Such findings offer the possibility to define a relevant set of microbial indicators for assessing the effects of human activities on aquatic ecosystems. Microbial indicators, including the detection of "specialist" and sensitive taxa, and their functional capacity, might be useful, in combination with integrative microbial indices, to constitute accurate biomonitoring tools for the management and restoration of complex coastal aquatic systems.
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Affiliation(s)
- Zeina Bourhane
- Université de Pau et des Pays de l'Adour, UPPA/E2S, IPREM CNRS 5254, Pau, France
| | - Anders Lanzén
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Herrera Kaia, Portualdea z/g, 20110 Pasaia, Gipuzkoa, Spain; IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao, Spain
| | - Christine Cagnon
- Université de Pau et des Pays de l'Adour, UPPA/E2S, IPREM CNRS 5254, Pau, France
| | - Olfa Ben Said
- Laboratoire de Biosurveillance de l'Environnement, Faculté des Sciences de Bizerte, LBE, Tunisia
| | - Ezzeddine Mahmoudi
- Laboratoire de Biosurveillance de l'Environnement, Faculté des Sciences de Bizerte, LBE, Tunisia
| | - Frederic Coulon
- Cranfield University, School of Water, Energy and Environment, Cranfield MK430AL, UK
| | - Emmanuel Atai
- Cranfield University, School of Water, Energy and Environment, Cranfield MK430AL, UK
| | - Angel Borja
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Herrera Kaia, Portualdea z/g, 20110 Pasaia, Gipuzkoa, Spain; King Abdulaziz University, Faculty of Marine Sciences, Jeddah, Saudi Arabia
| | | | - Robert Duran
- Université de Pau et des Pays de l'Adour, UPPA/E2S, IPREM CNRS 5254, Pau, France.
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