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You Z, Wang C, Yang X, Liu Z, Guan Y, Mu J, Shi H, Zhao Z. Effects of eutrophication on the horizontal transfer of antibiotic resistance genes in microalgal-bacterial symbiotic systems. ENVIRONMENTAL RESEARCH 2024; 251:118692. [PMID: 38493856 DOI: 10.1016/j.envres.2024.118692] [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: 01/05/2024] [Revised: 03/11/2024] [Accepted: 03/11/2024] [Indexed: 03/19/2024]
Abstract
Overloading of nutrients such as nitrogen causes eutrophication of freshwater bodies. The spread of antibiotic resistance genes (ARGs) poses a threat to ecosystems. However, studies on the enrichment and spread of ARGs from increased nitrogen loading in algal-bacterial symbiotic systems are limited. In this study, the transfer of extracellular kanamycin resistance (KR) genes from large (RP4) small (pEASY-T1) plasmids into the intracellular and extracellular DNA (iDNA, eDNA) of the inter-algal environment of Chlorella pyrenoidosa was investigated, along with the community structure of free-living (FL) and particle-attached (PA) bacteria under different nitrogen source concentrations (0-2.5 g/L KNO3). The results showed that KR gene abundance in the eDNA adsorbed on solid particles (D-eDNA) increased initially and then decreased with increasing nitrogen concentration, while the opposite was true for the rest of the free eDNA (E-eDNA). Medium nitrogen concentrations promoted the transfer of extracellular KR genes into the iDNA attached to algal microorganisms (A-iDNA), eDNA attached to algae (B-eDNA), and the iDNA of free microorganisms (C-iDNA); high nitrogen contributed to the transfer of KR genes into C-iDNA. The highest percentage of KR genes was found in B-eDNA with RP4 plasmid treatment (66.2%) and in C-iDNA with pEASY-T1 plasmid treatment (86.88%). In addition, dissolved oxygen (DO) significantly affected the bacterial PA and FL community compositions. Nephelometric turbidity units (NTU) reflected the abundance of ARGs in algae. Proteobacteria, Cyanobacteria, Bacteroidota, and Actinobacteriota were the main potential hosts of ARGs. These findings provide new insights into the distribution and dispersal of ARGs in the phytoplankton inter-algal environment.
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Affiliation(s)
- Ziqi You
- College of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding, Hebei, China.
| | - Ce Wang
- College of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding, Hebei, China
| | - Xiaobin Yang
- College of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding, Hebei, China
| | - Zikuo Liu
- College of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding, Hebei, China
| | - Yueqiang Guan
- College of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding, Hebei, China
| | - Jiandong Mu
- Hebei Ocean and Fisheries Science Research Institute, Qinhuangdao, 066200, China
| | - Huijuan Shi
- Museum of Hebei University, Hebei University, Baoding, Hebei, China.
| | - Zhao Zhao
- College of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding, Hebei, China.
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Ma C, Peng C, Fu L, Ren C, Liu X, Liu Z, Qin S, Zhong Z. Phycosphere bacterial disturbance of Saccharina japonica caused by white rot disease relates to seawater nutrients. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-33707-x. [PMID: 38767795 DOI: 10.1007/s11356-024-33707-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 05/13/2024] [Indexed: 05/22/2024]
Abstract
In mid-November 2021, there were large areas of white rot disease on cultivated Saccharina japonica in Rongcheng City, China, and diseases were undetected on Sargassum horneri and Porphyra yezoensis. The disturbance direction of bacterial community in the phycosphere after disease outbreak and the relationship with seawater nutrients remain unclear. Here, in situ studies of bacterial community in the non-diseased and diseased areas (Shawo and Dongchu islands) and seawater nutrient levels were carried out. 16S rRNA sequencing showed that the bacterial richness of the studied seaweeds increased in the diseased area. Only in S. japonica, Algitalea outcompeted abundant primary bacteria with probiotic relationships to the host of the non-diseased area, and dominated in the diseased area (17.6% of the total abundance). Nitrogen and phosphorus levels in seawater were 57.8% and 19.6% higher in the non-diseased area than those in the diseased area, respectively, and were strongly correlated with the phycosphere bacteria at the family level of S. japonica. There was no difference in potential pathogenicity between the two areas, while positive signal communications decreased, and nitrogen cycle, chemoheterotrophy, and cellulolysis increased in the diseased area compared to the non-diseased area. Overall, white rot disease caused a structural disturbance in phycosphere bacterial community of S. japonica that related to seawater nutrient levels. Enriched degraders and altered bacterial community functions may exacerbate the disease. This evaluation will provide information for white rot disease management to prevent and mitigate the occurrence of S. japonica outbreaks.
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Affiliation(s)
- Chen Ma
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China
- State Key Laboratory of Marine Resource Utilization in South China Sea, College of Oceanology, Hainan University, Haikou, 570228, Hainan, China
| | - Chengxiang Peng
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China
| | - Longwen Fu
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China
| | - Chenggang Ren
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China
| | - Xintian Liu
- Weihai Oceanic Development Research Institute, Weihai, 264200, Shandong, China
| | - Zhengyi Liu
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China
| | - Song Qin
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China
| | - Zhihai Zhong
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China.
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Zhao B, Yang G, Xie Z, Zhang N, Xia J, Liu X, Wang D, Wang P, Tang L. Efficient degradation of venlafaxine using intimately coupled high-active crystal facets exposed TiO 2 and biodegradation system: Kinetic studies, biofilm stress behavior and transformation mechanism. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 360:121159. [PMID: 38759549 DOI: 10.1016/j.jenvman.2024.121159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 04/15/2024] [Accepted: 05/10/2024] [Indexed: 05/19/2024]
Abstract
Intimately coupled photocatalysis and biodegradation (ICPB) system is a potential wastewater treatment technology, of which TiO2-based ICPB system has been widely studied. There are many ways to improve the degradation efficiency of the ICPB process, but no crystal facet engineering method has been reported yet. In this work, a new ICPB system coated with NaF-TiO2 exposing high energy facets was designed to degrade biorecalcitrant psychotropic drug - venlafaxine (VNF). Initially, the TiO2 crystal surface was modified with NaF, resulting in the formation of NaF-TiO2 with a 14.4% increase in the exposure ratio of (001). The contribution rate of ·OH was increased by 9.5%, and the contribution rate of h+ was increased by 33.2%. Next, NaF-TiO2 was loaded onto the surface of the sponge carrier, and then the ICPB system was constructed after about 15 days of biofilm formation. After the ICPB system was acclimated with VNF, the removal rate of COD decreased significantly (the lowest was 62.7%), but that of ammonia nitrogen remained at 50.5 ± 6.0% and the extracellular polymeric substance (EPS) secretion increased by 84.1 mg/g VSS. According to the high throughput results, at the phylum level, Proteobacteria and Chloroflexi together maintain the nitrogen removal capability and structural stability of the ICPB system. The relative abundance of Bacteroidota was significantly increased by 14.2%, suggesting that there may be some correlation between Bacteroidota and certain metabolites of the anti-depressant active ingredients. At the genus level, the Thauera (3.1%∼11.5%) is the major bacterial group that secretes EPS, protecting biofilm against external influences. Most of the changes in microorganisms are consistent with the decontamination properties and macroscopic appearance of EPS in the ICPB system. Finally, the degradation efficiency of ICPB system for VNF was investigated (92.7 ± 3.8%) and it was mostly through hydroxylation and demethylation pathways, with more small molecular products detected, providing the basis for biological assimilation of VNF. Collectively, the NaF-TiO2 based ICPB system would be lucrative for the future degradation of venlafaxine.
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Affiliation(s)
- Bo Zhao
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China
| | - Guojing Yang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China; College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, PR China.
| | - Zhouyun Xie
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China
| | - Ni Zhang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China; College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, PR China
| | - Jingfen Xia
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China.
| | - Xuran Liu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, PR China
| | - Dongbo Wang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, PR China
| | - Peier Wang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China
| | - Li Tang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China
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Ucak S. Determination of Bacterial Community Structure of Table Olive via Metagenomic Approach in Şarköy. Chem Biodivers 2024:e202302120. [PMID: 38613509 DOI: 10.1002/cbdv.202302120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/22/2024] [Accepted: 04/11/2024] [Indexed: 04/15/2024]
Abstract
One of the most popular pickled foods created worldwide is table olives. The aim was to identify the bacterial microbiota of table olive samples collected from Şarköy, Tekirdağ-Türkiye using next generation sequencing and 16S metagenomic analysis. Samples were studied as non-pre-enriched (n : 10) and after pre-enrichment (n : 10) to compare the effects of the enrichment process on the bacterial diversity. In non-pre-enriched, the most common genus found was Sphingomonas, followed by Altererythrobacter and Lysobacter. The most common phylum found was Proteobacteria, followed by Bacteroidota and Actinobacteria. In pre-enriched, Bacillus was the most commonly detected genus, followed by Pantoea and Staphylococcus. The most frequently found phylum was Firmicutes, followed by Proteobacteria and Cyanobacteria. This study is the first study for Şarköy, which is the only table olive production place in the Tekirdağ region due to its microclimate feature. Further studies are needed in more table olive samples from different geographical areas to confirm and develop current findings.
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Affiliation(s)
- Samet Ucak
- Department of Medical Biology and Genetics, Faculty of Medicine, Istanbul Aydın University, Istanbul, 34295, Türkiye
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Chen B, Zhang M, Lin D, Ye J, Tang K. Roseihalotalea indica gen. nov., sp. nov., a halophilic Bacteroidetes from mesopelagic Southwest Indian Ocean with higher carbohydrate metabolic potential. Antonie Van Leeuwenhoek 2024; 117:66. [PMID: 38607563 DOI: 10.1007/s10482-024-01965-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 04/08/2024] [Indexed: 04/13/2024]
Abstract
The pink-colored and strictly aerobic bacterium strain, designated as TK19036T, was isolated from mesopelagic layer of the Southwest Indian Ocean. This novel isolate can grow at 10-45 °C (optimum, 30 °C), pH 6.0-8.0 (optimum, pH 7.0), and 2-14% NaCl concentrations (w/v) (optimum, 6%). The predominant respiratory quinone was Menaquinone-7. Major polar lipid profiles contained two aminolipids, aminophospholipid, two glycolipids, phosphatidylethanolamine, and three unknown polar lipids. The preponderant cellular fatty acids were iso-C15:0, C16:1 ω5c and iso-C17:0 3-OH. Phylogenetic analyses based on 16S rRNA gene sequence uncovered that the strain TK19036T pertained to the family Catalinimonadaceae under phylum Bacteroidota, and formed a distinct lineage with the closed species Tunicatimonas pelagia NBRC 107804T. The up-to-bacteria-core gene phylogenetic trees also demonstrated a deep and novel branch formed by the strain TK19036T within the family Catalinimonadaceae. Based on chemotaxonomic, phylogenetic and genomic features presented above, strain TK19036T represents a novel species from a novel genus of the family Catalinimonadaceae, for which the name Roseihalotalea indica gen. nov. sp. nov. is proposed. The type strain is TK19036T (= CGMCC 1.18940T = NBRC 116371T).
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Affiliation(s)
- Beihan Chen
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, China
- School of Oceanography, Shanghai Jiao Tong University, Shanghai, China
| | - Mingzhe Zhang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, China
- School of Science, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Dan Lin
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, China
| | - Jianing Ye
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, China
| | - Kai Tang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Science, Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, China.
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6
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Pang H, Zheng K, Wang W, Zheng M, Liu Y, Yin H, Zhang D. Cefotaxime Exposure-Caused Oxidative Stress, Intestinal Damage and Gut Microbial Disruption in Artemia sinica. Microorganisms 2024; 12:675. [PMID: 38674619 PMCID: PMC11052325 DOI: 10.3390/microorganisms12040675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/17/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
Cefotaxime (CTX) is an easily detectable antibiotic pollutant in the water environment, but little is known about its toxic effects on aquatic invertebrates, especially on the intestine. Here, we determined the oxidative stress conditions of A. sinica under CTX exposure with five concentrations (0, 0.001, 0.01, 0.1 and 1 mg/L) for 14 days. After that, we focused on changes in intestinal tissue morphology and gut microbiota in A. sinica caused by CTX exposure at 0.01 mg/L. We found malondialdehyde (MDA) was elevated in CTX treatment groups, suggesting the obvious antibiotic-induced oxidative stress. We also found CTX exposure at 0.01 mg/L decreased the villus height and muscularis thickness in gut tissue. The 16S rRNA gene analysis indicated that CTX exposure reshaped the gut microbiota diversity and community composition. Proteobacteria, Actinobacteriota and Bacteroidota were the most widely represented phyla in A. sinica gut. The exposure to CTX led to the absence of Verrucomicrobia in dominant phyla and an increase in Bacteroidota abundance. At the genus level, eleven genera with an abundance greater than 0.1% exhibited statistically significant differences among groups. Furthermore, changes in gut microbiota composition were accompanied by modifications in gut microbiota functions, with an up-regulation in amino acid and drug metabolism functions and a down-regulation in xenobiotic biodegradation and lipid metabolism-related functions under CTX exposure. Overall, our study enhances our understanding of the intestinal damage and microbiota disorder caused by the cefotaxime pollutant in aquatic invertebrates, which would provide guidance for healthy aquaculture.
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Affiliation(s)
- Huizhong Pang
- The International Centre for Precision Environmental Health and Governance, College of Life Sciences, Hebei University, Baoding 071002, China; (H.P.); (K.Z.); (W.W.); (M.Z.)
| | - Kaixuan Zheng
- The International Centre for Precision Environmental Health and Governance, College of Life Sciences, Hebei University, Baoding 071002, China; (H.P.); (K.Z.); (W.W.); (M.Z.)
| | - Wenbo Wang
- The International Centre for Precision Environmental Health and Governance, College of Life Sciences, Hebei University, Baoding 071002, China; (H.P.); (K.Z.); (W.W.); (M.Z.)
| | - Mingjuan Zheng
- The International Centre for Precision Environmental Health and Governance, College of Life Sciences, Hebei University, Baoding 071002, China; (H.P.); (K.Z.); (W.W.); (M.Z.)
| | - Yudan Liu
- The International Centre for Precision Environmental Health and Governance, College of Life Sciences, Hebei University, Baoding 071002, China; (H.P.); (K.Z.); (W.W.); (M.Z.)
| | - Hong Yin
- The International Centre for Precision Environmental Health and Governance, College of Life Sciences, Hebei University, Baoding 071002, China; (H.P.); (K.Z.); (W.W.); (M.Z.)
- Key Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Daochuan Zhang
- The International Centre for Precision Environmental Health and Governance, College of Life Sciences, Hebei University, Baoding 071002, China; (H.P.); (K.Z.); (W.W.); (M.Z.)
- Key Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China
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Su B, Gao C, Ji J, Zhang H, Zhang Y, Mouazen AM, Shao S, Jiao H, Yi S, Li S. Soil bacterial succession with different land uses along a millennial chronosequence derived from the Yangtze River flood plain. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168531. [PMID: 37963526 DOI: 10.1016/j.scitotenv.2023.168531] [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: 07/17/2023] [Revised: 11/10/2023] [Accepted: 11/10/2023] [Indexed: 11/16/2023]
Abstract
Wetlands reclamation has been a traditional and effective practice for obtaining new land to alleviate the pressure induced by population growth. However, the evolution of soil-dwelling microorganisms along with reclamation and the potential influence of land-use patterns on them remain unclear. In this study, a soil chronosequence derived from Yangtze River sediments was established, comprising of circa 0, 60, 160, 280, 2000, and 3000 years, to examine the succession of soil bacterial communities across different land uses. Our analysis revealed obvious development in soil properties and orderly bacterial succession along reclamation gradients. Over time, reclaimed land suffered from varying degrees of abundance loss and biodiversity simplification, with dryland being the most sensitive to reclamation duration changes, whereas woodland and paddies showed slight reductions. Bacterial communities tended to shift from oligotrophs (K-strategist) to copiotrophs (r-strategist) at the phylum level as reclamation proceeded for all land use types. The relative abundance of certain bacterial functional groups associated with the carbon (C) and nitrogen (N) cycles were significantly increased, including those involved in Aerobic chemoheterotrophy, Chitinolysis, Nitrate reduction, Nitrate respiration, and Ureolysis, while other groups, such as those related to Fermentation, Methylotrophy, Nitrification, and Hydrocarbon degradation, exhibited decreased expression. Notably, prolonged reclamation can also trigger ecological issues in soil, including a continuous increase of predatory/exoparasitic bacteria in dryland and woodland, as well as a significant increase in pathogenic bacteria during the later stages in paddy fields. Overall, our study identified the impact of long-term reclamation on soil bacterial communities and functional groups, providing insight into the development of land-use-oriented ecological protection strategies.
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Affiliation(s)
- Baowei Su
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China
| | - Chao Gao
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China
| | - Jiachen Ji
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China
| | - Huan Zhang
- School of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China.
| | - Yalu Zhang
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China
| | - Abdul M Mouazen
- Precision Soil and Crop Engineering Group (Precision SCoRing), Department of Environment, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Blok B, 1st Floor, 9000 Gent, Belgium
| | - Shuangshuang Shao
- School of resource and environment, Henan University of Engineering, Zhengzhou 451191, Henan, China
| | - He Jiao
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China
| | - Shuangwen Yi
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China
| | - Shengfeng Li
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China
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8
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Hudson J, Egan S. Marine diseases and the Anthropocene: Understanding microbial pathogenesis in a rapidly changing world. Microb Biotechnol 2024; 17:e14397. [PMID: 38217393 PMCID: PMC10832532 DOI: 10.1111/1751-7915.14397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 12/20/2023] [Indexed: 01/15/2024] Open
Abstract
Healthy marine ecosystems are paramount for Earth's biodiversity and are key to sustaining the global economy and human health. The effects of anthropogenic activity represent a pervasive threat to the productivity of marine ecosystems, with intensifying environmental stressors such as climate change and pollution driving the occurrence and severity of microbial diseases that can devastate marine ecosystems and jeopardise food security. Despite the potentially catastrophic outcomes of marine diseases, our understanding of host-pathogen interactions remains an understudied aspect of both microbiology and environmental research, especially when compared to the depth of information available for human and agricultural systems. Here, we identify three avenues of research in which we can advance our understanding of marine disease in the context of global change, and make positive steps towards safeguarding marine communities for future generations.
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Affiliation(s)
- Jennifer Hudson
- Centre for Marine Science and Innovation, School of Biological, Earth and Environmental SciencesThe University of New South WalesSydneyNew South WalesAustralia
| | - Suhelen Egan
- Centre for Marine Science and Innovation, School of Biological, Earth and Environmental SciencesThe University of New South WalesSydneyNew South WalesAustralia
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9
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Heitzman JM, Mitushasi G, Spatafora D, Agostini S. Seasonal coral-algae interactions drive White Mat Syndrome coral disease outbreaks. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:166379. [PMID: 37595912 DOI: 10.1016/j.scitotenv.2023.166379] [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: 07/12/2023] [Revised: 08/02/2023] [Accepted: 08/15/2023] [Indexed: 08/20/2023]
Abstract
Ocean warming drives not only the increase of known coral disease prevalence but facilitates the emergence of new undescribed ones too. As climate change is restructuring coral ecosystems, novel biological interactions could lead to an increase in coral disease in both tropical and marginal coral communities. White Mat Syndrome (WMS) represents one such emerging coral disease, with outbreaks associated with high algal interactions and seasonal summer temperatures. However, the mechanisms behind its pathogenesis, modes of transmission and causative pathogens remain to be identified. Ex situ infection experiments pairing the coral Porites heronensis together with local potential contributory factors show that the macroalga Gelidium elegans hosts and proliferates the WMS microbial mat. This pathogenic consortium then infects adjacent corals, leading to their mortality. WMS was also observed to transmit following the fragmentation of the microbial mat, which was able to infect healthy corals. Sulfur-cycling bacteria (i.e., Beggiatoa, Desulfobacter sp., Arcobacteraceae species) and the free-living spirochete Oceanospirochaeta sediminicola were found consistently in both WMS and G. elegans consortia, suggesting they are putative pathogens of WMS. The predicted functional roles of these pathogenic consortia showed degradative processes, hinting that tissue lyses could drive mat formation and spread. Coral-algae interactions will rise due to ongoing ocean warming and coral ecosystem degradation, likely promoting the virulence and prevalence of algal-driven coral diseases.
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Affiliation(s)
- Joshua M Heitzman
- Shimoda Marine Research Center, University of Tsukuba, 5-10-1 Shimoda, Shizuoka, Japan.
| | - Guinther Mitushasi
- Shimoda Marine Research Center, University of Tsukuba, 5-10-1 Shimoda, Shizuoka, Japan
| | - Davide Spatafora
- Shimoda Marine Research Center, University of Tsukuba, 5-10-1 Shimoda, Shizuoka, Japan
| | - Sylvain Agostini
- Shimoda Marine Research Center, University of Tsukuba, 5-10-1 Shimoda, Shizuoka, Japan
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10
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Kong T, Fan X, Tran NT. Changes in Hemolymph Microbiota of Chinese Mitten Crab ( Eriocheir sinensis) in Response to Aeromonas hydrophila or Staphylococcus aureus Infection. Animals (Basel) 2023; 13:3058. [PMID: 37835665 PMCID: PMC10571569 DOI: 10.3390/ani13193058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/23/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
The Chinese mitten crab (Eriocheir sinensis) has significant economic potential in both the Chinese domestic and global markets. The hemolymph microbiota is known to play a critical role in regulating physiological and biochemical functions in crustaceans. However, the study of the hemolymph microbiota of E. sinensis in response to infections has not been undertaken. In this study, changes in the composition and function of the hemolymph microbiota in E. sinensis infected with either Staphylococcus aureus (Sa) or Aeromonas hydrophila (Ah) were investigated using 16S rRNA sequencing, with a phosphate buffer saline (PBS) injection serving as the control. Results showed that the dominant hemolymph microbiota of E. sinensis were Proteobacteria, Bacteroidota, and Firmicutes. The relative abundance of the phyla Firmicutes, Bdellovibrionota, and Myxococcota was significantly reduced in both Sa and Ah groups compared to the PBS group. At the genus level, compared to the PBS group, a significant increase in the abundance of Flavobacterium and Aeromonas was found in both Ah and Sa groups. The analysis of the functional profile showed that pathways related to 'cell growth and death', 'metabolism of terpenoids and polyketides', 'cancers', 'lipid metabolism', 'neurodegenerative diseases', 'metabolism of other amino acids', 'xenobiotics biodegradation and metabolism', and 'circulatory system and endocrine system' were predominant in the Ah group. Meanwhile, pathways related to 'metabolism or genetic information progressing', such as 'translation', 'metabolic diseases', and 'cellular processes and signaling', were enriched in the Sa group. This study revealed the effects of pathogens (S. aureus or A. hydrophila) on the maintenance of the hemolymph microbiota in E. sinensis. It shed light on the mechanisms employed by the hemolymph microbiota of E. sinensis under pathogen stimulation.
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Affiliation(s)
- Tongtong Kong
- School of Life Sciences, Qufu Normal University, Qufu 273165, China; (T.K.)
| | - Xinyue Fan
- School of Life Sciences, Qufu Normal University, Qufu 273165, China; (T.K.)
| | - Ngoc Tuan Tran
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou 515063, China
- Institute of Marine Sciences, Shantou University, Shantou 515063, China
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11
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Murúa P, Garvetto A, Egan S, Gachon CMM. The Reemergence of Phycopathology: When Algal Biology Meets Ecology and Biosecurity. ANNUAL REVIEW OF PHYTOPATHOLOGY 2023; 61:231-255. [PMID: 37253694 DOI: 10.1146/annurev-phyto-020620-120425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Viruses, bacteria, and eukaryotic symbionts interact with algae in a variety of ways to cause disease complexes, often shaping marine and freshwater ecosystems. The advent of phyconomy (a.k.a. seaweed agronomy) represents a need for a greater understanding of algal disease interactions, where underestimated cryptic diversity and lack of phycopathological basis are prospective constraints for algal domestication. Here, we highlight the limited yet increasing knowledge of algal pathogen biodiversity and the ecological interaction with their algal hosts. Finally, we discuss how ecology and cultivation experience contribute to and reinforce aquaculture practice, with the potential to reshape biosecurity policies of seaweed cultivation worldwide.
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Affiliation(s)
- Pedro Murúa
- Instituto de Acuicultura, Universidad Austral de Chile-Sede Puerto Montt, Los Lagos, Chile;
- Scottish Association for Marine Science, Scottish Marine Institute, Oban, United Kingdom
| | - Andrea Garvetto
- Scottish Association for Marine Science, Scottish Marine Institute, Oban, United Kingdom
- Institute of Microbiology, Universität Innsbruck, Innsbruck, Tyrol, Austria
| | - Suhelen Egan
- Centre for Marine Science and Innovation, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, Australia
| | - Claire M M Gachon
- Scottish Association for Marine Science, Scottish Marine Institute, Oban, United Kingdom
- Muséum National d'Histoire Naturelle, CNRS, Paris, France
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12
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Reyes G, Andrade B, Betancourt I, Panchana F, Solórzano R, Preciado C, Sorroza L, Trujillo LE, Bayot B. Microbial signature profiles of Penaeus vannamei larvae in low-survival hatchery tanks affected by vibriosis. PeerJ 2023; 11:e15795. [PMID: 37671363 PMCID: PMC10476614 DOI: 10.7717/peerj.15795] [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: 01/30/2023] [Accepted: 07/05/2023] [Indexed: 09/07/2023] Open
Abstract
Vibriosis is caused by some pathogenic Vibrio and produces significant mortality in Pacific white shrimp Penaeus (Litopenaeus) vannamei larvae in commercial hatcheries. Acute hepatopancreatic necrosis disease (AHPND) is an emerging vibriosis affecting shrimp-producing countries worldwide. Zoea 2 syndrome is another type of vibriosis that affects the early stages of P. vannamei larvae. Although the pathogenesis of AHPND and zoea 2 syndrome is well known, there is scarce information about microbial composition and biomarkers of P.vannamei larvae affected by AHPND, and there is no study of the microbiome of larvae affected by zoea 2 syndrome. In this work, we characterized the microbiome of P. vannamei larvae collected from 12 commercial hatchery tanks by high-throughput sequencing. Seven tanks were affected by AHPND, and five tanks were affected by zoea 2 syndrome. Subsequently, all samples were selected for sequencing of the V3-V4 region of the16S rRNA gene. Similarity analysis using the beta diversity index revealed significant differences in the larval bacterial communities between disease conditions, particularly when Vibrio was analyzed. Linear discriminant analysis with effect size determined specific microbial signatures for AHPND and zoea 2 syndrome. Sneathiella, Cyclobacterium, Haliea, Lewinella, among other genera, were abundant in AHPND-affected larvae. Meanwhile, Vibrio, Spongiimonas, Meridianimaribacter, Tenacibaculum, among other genera, were significantly abundant in larvae affected by zoea 2 syndrome. The bacterial network at the phylum level for larvae collected from tanks affected by AHPND showed greater complexity and connectivity than in samples collected from tanks affected by zoea 2 syndrome. The bacterial connections inter Vibrio genera were higher in larvae from tanks affected by zoea 2 syndrome, also presenting other connections between the genera Vibrio and Catenococcus. The identification of specific biomarkers found in this study could be useful for understanding the microbial dynamics during different types of vibriosis.
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Affiliation(s)
- Guillermo Reyes
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Betsy Andrade
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Irma Betancourt
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Fanny Panchana
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Ramiro Solórzano
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Cristhian Preciado
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Lita Sorroza
- Facultad de Ciencias Agropecuarias, Universidad Técnica de Machala, 5.5 Av Panamericana, Machala, Ecuador
| | - Luis E. Trujillo
- Industrial Biotechnology Research Group, CENCINAT, Universidad de las Fuerzas Armadas, ESPE, Sangolquí, Ecuador
| | - Bonny Bayot
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
- Facultad de Ingeniería Marítima y Ciencias del Mar (FIMCM), Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
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13
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Jiang X, Niu M, Qin K, Hu Y, Li Y, Che C, Wang C, Mu C, Wang H. The shared microbiome in mud crab ( Scylla paramamosain) of Sanmen Bay, China: core gut microbiome. Front Microbiol 2023; 14:1243334. [PMID: 37727291 PMCID: PMC10505715 DOI: 10.3389/fmicb.2023.1243334] [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: 06/26/2023] [Accepted: 08/18/2023] [Indexed: 09/21/2023] Open
Abstract
Introduction The mud crab, Scylla paramamosain, holds great commercial significance as a marine crustacean widely cultivated in the Indo-Pacific region. Understanding the core gut microbiota of aquatic animals is crucial for their overall health and growth, yet the core gut microbiota of mud crab remains poorly characterized. Methods In this study, we gathered gut samples from mud crabs across five locations within Sanmen Bay, China. Through the utilization of high-throughput sequencing, we delved into the composition of the gut microbial community and identified the core gut microbiome of mud crab. Results Our results demonstrate that the gut microbial diversity of mud crab did not exhibit significant variation among the five sampling sites, although there were some differences in community richness. At the phylum level, we identified 35 representative phyla, with Firmicutes, Proteobacteria, Bacteroidota, and Campilobacterota as the dominant phyla. Among the 815 representative genera, we discovered 19 core genera, which accounted for 65.45% of the total sequences. These core genera were distributed across 6 phyla, and among them, Photobacterium exhibited the highest average relative abundance. Discussion Photobacterium has probiotic activity and may play a crucial role in enhancing the immune response of the host and maintaining the diversity of the gut microbiota. Moreover, we observed a positive correlation between the relative abundance of core genera and the stability of the gut microbial community. Furthermore, our findings revealed distinct differences in gut microbial composition and specific taxa between the sexes of mud crab. These differences subsequently influenced the functionality of the gut microbial community. Overall, our investigation sheds light on the core gut microbiota of mud crab, emphasizing the importance of core gut microbial communities in maintaining the health and growth of these commercially significant marine crustaceans.
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Affiliation(s)
- Xiaosong Jiang
- School of Marine Science, Ningbo University, Ningbo, Zhejiang, China
| | - Mingming Niu
- School of Marine Science, Ningbo University, Ningbo, Zhejiang, China
| | - Kangxiang Qin
- School of Marine Science, Ningbo University, Ningbo, Zhejiang, China
| | - Yun Hu
- School of Marine Science, Ningbo University, Ningbo, Zhejiang, China
| | - Yuntao Li
- School of Marine Science, Ningbo University, Ningbo, Zhejiang, China
| | - Chenxi Che
- School of Marine Science, Ningbo University, Ningbo, Zhejiang, China
| | - Chunlin Wang
- School of Marine Science, Ningbo University, Ningbo, Zhejiang, China
- Key Laboratory of Aquacultral Biotechnology, Ministry of Education, Ningbo University, Ningbo, Zhejiang, China
| | - Changkao Mu
- School of Marine Science, Ningbo University, Ningbo, Zhejiang, China
- Key Laboratory of Aquacultral Biotechnology, Ministry of Education, Ningbo University, Ningbo, Zhejiang, China
| | - Huan Wang
- School of Marine Science, Ningbo University, Ningbo, Zhejiang, China
- Key Laboratory of Aquacultral Biotechnology, Ministry of Education, Ningbo University, Ningbo, Zhejiang, China
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14
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Parchemin C, Raviglione D, Mejait A, Sasal P, Faliex E, Clerissi C, Tapissier-Bontemps N. Antibacterial Activities and Life Cycle Stages of Asparagopsis armata: Implications of the Metabolome and Microbiome. Mar Drugs 2023; 21:363. [PMID: 37367688 DOI: 10.3390/md21060363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/28/2023] Open
Abstract
The red alga Asparagopsis armata is a species with a haplodiplophasic life cycle alternating between morphologically distinct stages. The species is known for its various biological activities linked to the production of halogenated compounds, which are described as having several roles for the algae such as the control of epiphytic bacterial communities. Several studies have reported differences in targeted halogenated compounds (using gas chromatography-mass spectrometry analysis (GC-MS)) and antibacterial activities between the tetrasporophyte and the gametophyte stages. To enlarge this picture, we analysed the metabolome (using liquid chromatography-mass spectrometry (LC-MS)), the antibacterial activity and the bacterial communities associated with several stages of the life cycle of A. armata: gametophytes, tetrasporophytes and female gametophytes with developed cystocarps. Our results revealed that the relative abundance of several halogenated molecules including dibromoacetic acid and some more halogenated molecules fluctuated depending on the different stages of the algae. The antibacterial activity of the tetrasporophyte extract was significantly higher than that of the extracts of the other two stages. Several highly halogenated compounds, which discriminate algal stages, were identified as candidate molecules responsible for the observed variation in antibacterial activity. The tetrasporophyte also harboured a significantly higher specific bacterial diversity, which is associated with a different bacterial community composition than the other two stages. This study provides elements that could help in understanding the processes that take place throughout the life cycle of A. armata with different potential energy investments between the development of reproductive elements, the production of halogenated molecules and the dynamics of bacterial communities.
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Affiliation(s)
- Christelle Parchemin
- Centre de Recherches Insulaires et Observatoire de l'Environnement (CRIOBE), Ecole Pratique des Hautes Etudes (EPHE), Université PSL, UPVD, CNRS, UAR 3278, 52 Av. Paul Alduy, CEDEX, 66860 Perpignan, France
| | - Delphine Raviglione
- Centre de Recherches Insulaires et Observatoire de l'Environnement (CRIOBE), Ecole Pratique des Hautes Etudes (EPHE), Université PSL, UPVD, CNRS, UAR 3278, 52 Av. Paul Alduy, CEDEX, 66860 Perpignan, France
| | - Anouar Mejait
- Centre de Recherches Insulaires et Observatoire de l'Environnement (CRIOBE), Ecole Pratique des Hautes Etudes (EPHE), Université PSL, UPVD, CNRS, UAR 3278, 52 Av. Paul Alduy, CEDEX, 66860 Perpignan, France
| | - Pierre Sasal
- Centre de Recherches Insulaires et Observatoire de l'Environnement (CRIOBE), Ecole Pratique des Hautes Etudes (EPHE), Université PSL, UPVD, CNRS, UAR 3278, 52 Av. Paul Alduy, CEDEX, 66860 Perpignan, France
| | - Elisabeth Faliex
- Centre de Formation et de Recherche sur les Environnements Méditerranéens (CEFREM), UMR 5110 UPVD-CNRS, Université de Perpignan-Via Domitia, 52 Av. Paul Alduy, CEDEX, 66860 Perpignan, France
| | - Camille Clerissi
- Centre de Recherches Insulaires et Observatoire de l'Environnement (CRIOBE), Ecole Pratique des Hautes Etudes (EPHE), Université PSL, UPVD, CNRS, UAR 3278, 52 Av. Paul Alduy, CEDEX, 66860 Perpignan, France
| | - Nathalie Tapissier-Bontemps
- Centre de Recherches Insulaires et Observatoire de l'Environnement (CRIOBE), Ecole Pratique des Hautes Etudes (EPHE), Université PSL, UPVD, CNRS, UAR 3278, 52 Av. Paul Alduy, CEDEX, 66860 Perpignan, France
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15
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Zhang W, Teng M, Yan J, Chen L. Study effect and mechanism of levofloxacin on the neurotoxicity of Rana nigromaculata tadpoles exposed to imidacloprid based on the microbe-gut-brain axis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 872:162098. [PMID: 36764551 DOI: 10.1016/j.scitotenv.2023.162098] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/25/2023] [Accepted: 02/04/2023] [Indexed: 06/18/2023]
Abstract
Aquatic organisms may be simultaneously exposed to antibiotics and pesticides. After levofloxacin (LVFX), imidacloprid (IMI) exposure and co-exposure at environmental levels, we found LVFX and IMI had antagonistic effect on the neurotoxicity of tadpoles. IMI-induced neurotoxicity on tadpoles can be explained by oxidative stress and hormone levels in some degree. By regulating ornithine, l-asparagine, putrescine and tryptamine in the intestine, LVFX affected glutathione metabolism, arginine and proline metabolism, alanine, aspartate and glutamate metabolism, tyrosine metabolism and aminoacyl tRNA biosynthesis, so then eased the neurotoxicity caused by IMI. More interestingly, Fusobacteriota and Cetobacterium might play an important role on easing the neurotoxicity caused by IMI. In addition, LVFX might have a laxation effect on the increased relative abundance of Bacteroidota caused by IMI. In conclusion, IMI not only affected oxidative stress and hormone levels in the brain, but also affected the synthesis of neurotransmitters in the intestine by regulating intestinal microbiota. In LVFX and IMI co-exposed groups, LVFX alleviated the neurotoxicity caused by IMI through regulating the intestinal microbiota, showing as an antagonistic effect. Our results provided a new perspective for aquatic ecological risk assessment under co-exposure of antibiotics and pesticides.
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Affiliation(s)
- Wenjun Zhang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China.
| | - Miaomiao Teng
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Jin Yan
- National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Li Chen
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
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