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Yang J, Wang C, Wang Z, Li Y, Yu H, Feng J, Xie S, Li X. Distribution patterns and co-occurrence network of eukaryotic algae in different salinity waters of Yuncheng Salt Lake, China. Sci Rep 2024; 14:8340. [PMID: 38594439 PMCID: PMC11003963 DOI: 10.1038/s41598-024-58636-0] [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: 10/26/2023] [Accepted: 04/01/2024] [Indexed: 04/11/2024] Open
Abstract
The community structure and co-occurrence pattern of eukaryotic algae in Yuncheng Salt Lake were analyzed based on marker gene analysis of the 18S rRNA V4 region to understand the species composition and their synergistic adaptations to the environmental factors in different salinity waters. The results showed indicated that the overall algal composition of Yuncheng Salt Lake showed a Chlorophyta-Pyrrophyta-Bacillariophyta type structure. Chlorophyta showed an absolute advantage in all salinity waters. In addition, Cryptophyta dominated in the least saline waters; Pyrrophyta and Bacillariophyta were the dominant phyla in the waters with salinity ranging from 13.2 to 18%. Picochlorum, Nannochloris, Ulva, and Tetraselmis of Chlorophyta, Biecheleria and Oxyrrhis of Pyrrophyta, Halamphora, Psammothidium, and Navicula of Bacillariophyta, Guillardia and Rhodomonas of Cryptophyta were not observed in previous surveys of the Yuncheng Salt Lake, suggesting that the algae are undergoing a constant turnover as the water environment of the Salt Lake continues to change. The network diagram demonstrated that the algae were strongly influenced by salinity, NO3-, and pH, changes in these environmental factors would lead to changes in the algal community structure, thus affecting the stability of the network structure.
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Affiliation(s)
- Jing Yang
- Shanxi Key Laboratory of Yuncheng Salt Lake Ecological Protection and Resource Utilization, College of Life Sciences, Yuncheng University, Yuncheng, 044000, China
| | - Chuanxu Wang
- Shanxi Key Laboratory of Yuncheng Salt Lake Ecological Protection and Resource Utilization, College of Life Sciences, Yuncheng University, Yuncheng, 044000, China
| | - Zhuo Wang
- Shanxi Key Laboratory of Yuncheng Salt Lake Ecological Protection and Resource Utilization, College of Life Sciences, Yuncheng University, Yuncheng, 044000, China
| | - Yunjie Li
- Shanxi Key Laboratory of Yuncheng Salt Lake Ecological Protection and Resource Utilization, College of Life Sciences, Yuncheng University, Yuncheng, 044000, China
| | - Huiying Yu
- Shanxi Key Laboratory of Yuncheng Salt Lake Ecological Protection and Resource Utilization, College of Life Sciences, Yuncheng University, Yuncheng, 044000, China
| | - Jia Feng
- School of Life Science, Shanxi University, Taiyuan, 030006, China
| | - Shulian Xie
- School of Life Science, Shanxi University, Taiyuan, 030006, China
| | - Xin Li
- Shanxi Key Laboratory of Yuncheng Salt Lake Ecological Protection and Resource Utilization, College of Life Sciences, Yuncheng University, Yuncheng, 044000, China.
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Singh A, Patani A, Patel M, Vyas S, Verma RK, Amari A, Osman H, Rathod L, Elboughdiri N, Yadav VK, Sahoo DK, Chundawat RS, Patel A. Tomato seed bio-priming with Pseudomonas aeruginosa strain PAR: a study on plant growth parameters under sodium fluoride stress. Front Microbiol 2024; 14:1330071. [PMID: 38239735 PMCID: PMC10794310 DOI: 10.3389/fmicb.2023.1330071] [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: 10/30/2023] [Accepted: 12/04/2023] [Indexed: 01/22/2024] Open
Abstract
The primary goal of this experiment is to examine the effectiveness of Pseudomonas aeruginosa strain PAR as a rhizobacterium that promotes plant growth in mitigating the negative effects of fluoride-induced stress in tomato (Lycopersicon esculentum Mill.) plants. A total of 16 rhizobacterial strains were tested for plant growth-promoting (PGP) attributes, with isolates S1, S2, and S3 exhibiting different characteristics. Furthermore, growth kinetics studies revealed that these isolates were resilient to fluoride stress (10, 20, 40, and 80 ppm), with isolate S2 exhibiting notable resilience compared to the other two strains. Phylogenetic analysis revealed isolate S2 as P. aeruginosa strain PAR. Physiological analyses demonstrated that P. aeruginosa strain PAR had a beneficial impact on plant properties under fluoride stress, comprising seed germination, root length, shoot height, relative water content, and leaf area, the strain also impacted the buildup of glycine betaine, soluble sugar, and proline, demonstrating its significance in enhancing plant stress tolerance. In P. aeruginosa strain PAR-treated plants, chlorophyll content increased while malondialdehyde (MDA) levels decreased, indicating enhanced photosynthetic efficiency and less oxidative stress. The strain modified antioxidant enzyme action (catalase, ascorbate, glutathione reductase, peroxidase, and superoxide dismutase), which contributed to improved stress resilience. Mineral analysis revealed a decrease in sodium and fluoride concentrations while increasing magnesium, potassium, phosphorus, and iron levels, emphasizing the strain's significance in nutrient management. Correlation and principal component analysis revealed extensive correlations between physiological and biochemical parameters, underscoring P. aeruginosa strain PAR's multifaceted impact on plant growth and stress response. This study offers valuable information on effectively utilizing PGPR, particularly P. aeruginosa strain PAR, in fluoride-contaminated soils for sustainable agriculture. It presents a promising biological strategy to enhance crop resilience and productivity.
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Affiliation(s)
- Anamika Singh
- School of Liberal Arts and Sciences, Mody University of Science and Technology, Sikar, India
| | - Anil Patani
- Department of Biotechnology, Smt. S. S. Patel Nootan Science and Commerce College, Sankalchand Patel University, Visnagar, India
| | - Margi Patel
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, India
| | - Suhas Vyas
- Department of Life Sciences, Bhakta Kavi Narsinh Mehta University, Junagadh, Gujarat, India
| | - Rakesh Kumar Verma
- School of Liberal Arts and Sciences, Mody University of Science and Technology, Sikar, India
| | - Abdelfattah Amari
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha, Saudi Arabia
| | - Haitham Osman
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha, Saudi Arabia
| | - Lokendra Rathod
- ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Noureddine Elboughdiri
- Chemical Engineering Department, College of Engineering, University of Ha'il, Ha'il, Saudi Arabia
- Chemical Engineering Process Department, National School of Engineers Gabes, University of Gabes, Gabes, Tunisia
| | - Virendra Kumar Yadav
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, India
| | - Dipak Kumar Sahoo
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | | | - Ashish Patel
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, India
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Mathur M, Rawat N, Saxena T, Khandelwal R, Jain N, Sharma MK, Mohan MK, Bhatnagar P, Flora SJS, Kaushik P. Effect of Arsenic on Fluoride Tolerance in Microbacterium paraoxydans Strain IR-1. TOXICS 2023; 11:945. [PMID: 37999597 PMCID: PMC10675054 DOI: 10.3390/toxics11110945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 10/30/2023] [Accepted: 11/09/2023] [Indexed: 11/25/2023]
Abstract
Fluoride (F) and arsenic (As) are two major contaminants of water and soil systems around the globe, causing potential toxicity to humans, plants, animals, and microbes. These contaminated soil systems can be restored by microorganisms that can tolerate toxic stress and provide rapid mineralization of soil, organic matter, and contaminants, using various tolerance mechanisms. Thus, the present study was undertaken with the arsenic hyper-tolerant bacterium Microbacterium paraoxydans strain IR-1 to determine its tolerance and toxicity to increasing doses of fluoride, either individually or in combination with arsenic, in terms of growth inhibition using a toxicity unit model. The minimum inhibitory concentration (MIC)and half maximal inhibitory concentration (IC50) values for fluoride increased, from 9 g/L to 11 g/L and from 5.91 ± 0.1 g/L to 6.32 ± 0.028 g/L, respectively, in the combination (F + As) group. The statistical comparison of observed and expected additive toxicities, with respect to toxicity unit (TU difference), using Student's t-test, was found to be highly significant (p < 0.001). This suggests the antagonistic effect of arsenic on fluoride toxicity to the strain IR-1. The unique stress tolerance of IR-1 ensures its survival as well as preponderance in fluoride and arsenic co-contaminated sites, thus paving the way for its possible application in the natural or artificial remediation of toxicant-exposed degraded soil systems.
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Affiliation(s)
- Megha Mathur
- Applied Microbiology Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology, Delhi 110016, India;
| | - Neha Rawat
- Department of Life Sciences, IIS University, Mansarovar, Jaipur 302020, India (P.B.)
| | - Tanushree Saxena
- Department of Life Sciences, IIS University, Mansarovar, Jaipur 302020, India (P.B.)
| | - Renu Khandelwal
- Centre for Advanced Studies, Department of Zoology, University of Rajasthan, Jaipur 302004, India
| | - Neha Jain
- Centre for Advanced Studies, Department of Zoology, University of Rajasthan, Jaipur 302004, India
| | - Mukesh K. Sharma
- Department of Zoology, S.P.C., Government College, Ajmer 305001, India
| | - Medicherla K. Mohan
- Department of Biotechnology and Bioinformatics, Birla Institute of Scientific Research, C Scheme, Jaipur 302001, India;
| | - Pradeep Bhatnagar
- Department of Life Sciences, IIS University, Mansarovar, Jaipur 302020, India (P.B.)
| | - Swaran J. S. Flora
- National Institute of Pharmaceutical Education and Research-Raebareli, Lucknow 226002, India
| | - Pallavi Kaushik
- Centre for Advanced Studies, Department of Zoology, University of Rajasthan, Jaipur 302004, India
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4
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Singh A, Yadav VK, Gautam H, Rathod L, Chundawat RS, Singh G, Verma RK, Sahoo DK, Patel A. The role of plant growth promoting rhizobacteria in strengthening plant resistance to fluoride toxicity: a review. Front Microbiol 2023; 14:1271034. [PMID: 37901824 PMCID: PMC10603187 DOI: 10.3389/fmicb.2023.1271034] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 09/20/2023] [Indexed: 10/31/2023] Open
Abstract
A wide variety of bacteria are present in soil but in rhizospheric area, the majority of microbes helps plant in defending diseases and facilitate nutrient uptake. These microorganisms are supported by plants and they are known as plant growth-promoting rhizobacteria (PGPR). The PGPRs have the potential to replace chemical fertilizers in a way that is more advantageous for the environment. Fluoride (F) is one of the highly escalating, naturally present contaminants that can be hazardous for PGPRs because of its antibacterial capacity. The interactions of F with different bacterial species in groundwater systems are still not well understood. However, the interaction of PGPR with plants in the rhizosphere region reduces the detrimental effects of pollutants and increases plants' ability to endure abiotic stress. Many studies reveal that PGPRs have developed F defense mechanisms, which include efflux pumps, Intracellular sequestration, enzyme modifications, enhanced DNA repair mechanism, detoxification enzymes, ion transporter/antiporters, F riboswitches, and genetic mutations. These resistance characteristics are frequently discovered by isolating PGPRs from high F-contaminated areas or by exposing cells to fluoride in laboratory conditions. Numerous studies have identified F-resistant microorganisms that possess additional F transporters and duplicates of the well-known targets of F. Plants are prone to F accumulation despite the soil's low F content, which may negatively affect their growth and development. PGPRs can be used as efficient F bioremediators for the soil environment. Environmental biotechnology focuses on creating genetically modified rhizobacteria that can degrade F contaminants over time. The present review focuses on a thorough systemic analysis of contemporary biotechnological techniques, such as gene editing and manipulation methods, for improving plant-microbe interactions for F remediation and suggests the importance of PGPRs in improving soil health and reducing the detrimental effects of F toxicity. The most recent developments in the realm of microbial assistance in the treatment of F-contaminated environments are also highlighted.
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Affiliation(s)
- Anamika Singh
- School of Liberal Arts and Sciences, Mody University of Science and Technology, Sikar, Rajasthan, India
| | - Virendra Kumar Yadav
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat, India
| | - Hemant Gautam
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Lokendra Rathod
- ICMR-National Institute for Research in Environmental Health, Bhopal, Madhya Pradesh, India
| | - Rajendra Singh Chundawat
- School of Liberal Arts and Sciences, Mody University of Science and Technology, Sikar, Rajasthan, India
| | - Gulab Singh
- School of Liberal Arts and Sciences, Mody University of Science and Technology, Sikar, Rajasthan, India
| | - Rakesh Kumar Verma
- School of Liberal Arts and Sciences, Mody University of Science and Technology, Sikar, Rajasthan, India
| | - Dipak Kumar Sahoo
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Ashish Patel
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat, India
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Zhu X, Wang Z, Luo Y, Ma Y, Xu Z, Wang L, Peng F, Pang Q, Li Y, He F, Xu B. Overlying water fluoride concentrations influence dissolved organic matter composition and migration from pore water in sediment via bacterial mechanisms. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2022; 10:100163. [PMID: 36159732 PMCID: PMC9488004 DOI: 10.1016/j.ese.2022.100163] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 02/23/2022] [Accepted: 02/23/2022] [Indexed: 06/16/2023]
Abstract
Fluoride (F-) is widespread in aquatic environments; however, it is not clear whether the fluctuation of F- concentrations in overlying lake water affects the composition and migration of dissolved organic matter (DOM) from sediment. A case study was presented in Sand Lake, China, and an experiment was conducted to analyze the influence of different F- concentrations in overlying water on DOM characteristics. Diffusion resulted in similarities in DOM components between overlying and pore waters, and bacterial activities and enzyme variation resulted in differences between them. Higher F- concentrations in overlying water resulted in a higher pH of pore water, which favored the enrichment of protein-like substances. Higher F- concentrations caused lower DOM concentrations and lower maximum fluorescence intensities (Fmax) of protein-like components in pore water. The F- concentrations had significantly negative correlations with Shannon indexes (P < 0.05). Thiobacillus influenced the migration of tyrosine-like substances by decreasing the pH of pore water. Trichococcus and Fusibacter altered the Fmax of protein-like, humic-like, and fulvic-like substances. The F- concentrations affected the DOM composition and migration due to the response of functional bacterial communities, which were positively correlated with the relative abundance of Thiobacillus and negatively correlated with the relative abundances of Trichococcus and Fusibacter. The high F- concentrations influenced the biosynthesis and degradation of protein-like substances by shifting the abundances of the relevant enzymes. The results of this study may provide ideas for investigating DOM cycling under the influence of F-, especially in lakes with fluctuations in F- concentrations.
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Affiliation(s)
- Xiang Zhu
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, PR China
| | - Zibo Wang
- China National Environmental Monitoring Centre, No8-2 Anwai Dayangfang, Chaoyang District, Beijing, 100012, PR China
| | - Yidan Luo
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, PR China
- College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Yushen Ma
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, PR China
- College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Zhipeng Xu
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, PR China
- College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Longmian Wang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, PR China
| | - Fuquan Peng
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, PR China
| | - Qingqing Pang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, PR China
| | - Yiping Li
- College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Fei He
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, PR China
| | - Bin Xu
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, PR China
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Pavić D, Grbin D, Gregov M, Ćurko J, Vladušić T, Šver L, Miljanović A, Bielen A. Variations in the Sporulation Efficiency of Pathogenic Freshwater Oomycetes in Relation to the Physico-Chemical Properties of Natural Waters. Microorganisms 2022; 10:microorganisms10030520. [PMID: 35336096 PMCID: PMC8955207 DOI: 10.3390/microorganisms10030520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/16/2022] [Accepted: 02/25/2022] [Indexed: 01/27/2023] Open
Abstract
Oomycete pathogens in freshwaters, such as Saprolegnia parasitica and Aphanomyces astaci, are responsible for fish/crayfish population declines in the wild and disease outbreaks in aquaculture. Although the formation of infectious zoospores in the laboratory can be triggered by washing their mycelium with natural water samples, the physico-chemical properties of the water that might promote sporulation are still unexplored. We washed the mycelia of A. astaci and S. parasitica with a range of natural water samples and observed differences in sporulation efficiency. The results of Partial Least Squares Regression (PLS-R) multivariate analysis showed that SAC (spectral absorption coefficient measured at 254 nm), DOC (dissolved organic carbon), ammonium-N and fluoride had the strongest positive effect on sporulation of S. parasitica, while sporulation of A. astaci was not significantly correlated with any of the analyzed parameters. In agreement with this, the addition of environmentally relevant concentrations of humic acid, an important contributor to SAC and DOC, to the water induced sporulation of S. parasitica but not of A. astaci. Overall, our results point to the differences in ecological requirements of these pathogens, but also present a starting point for optimizing laboratory protocols for the induction of sporulation.
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Hwang Y, Schulze-Makuch D, Arens FL, Saenz JS, Adam PS, Sager C, Bornemann TLV, Zhao W, Zhang Y, Airo A, Schloter M, Probst AJ. Leave no stone unturned: individually adapted xerotolerant Thaumarchaeota sheltered below the boulders of the Atacama Desert hyperarid core. MICROBIOME 2021; 9:234. [PMID: 34836555 PMCID: PMC8627038 DOI: 10.1186/s40168-021-01177-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The hyperarid core of the Atacama Desert is an extremely harsh environment thought to be colonized by only a few heterotrophic bacterial species. Current concepts for understanding this extreme ecosystem are mainly based on the diversity of these few species, yet a substantial area of the Atacama Desert hyperarid topsoil is covered by expansive boulder accumulations, whose underlying microbiomes have not been investigated so far. With the hypothesis that these sheltered soils harbor uniquely adapted microbiomes, we compared metagenomes and geochemistry between soils below and beside boulders across three distantly located boulder accumulations in the Atacama Desert hyperarid core. RESULTS Genome-resolved metagenomics of eleven samples revealed substantially different microbial communities in soils below and beside boulders, despite the presence of shared species. Archaea were found in significantly higher relative abundance below the boulders across all samples within distances of up to 205 km. These key taxa belong to a novel genus of ammonia-oxidizing Thaumarchaeota, Candidatus Nitrosodeserticola. We resolved eight mid-to-high quality genomes of this genus and used comparative genomics to analyze its pangenome and site-specific adaptations. Ca. Nitrosodeserticola genomes contain genes for ammonia oxidation, the 3-hydroxypropionate/4-hydroxybutyrate carbon fixation pathway, and acetate utilization indicating a chemolithoautotrophic and mixotrophic lifestyle. They also possess the capacity for tolerating extreme environmental conditions as highlighted by the presence of genes against oxidative stress and DNA damage. Site-specific adaptations of the genomes included the presence of additional genes for heavy metal transporters, multiple types of ATP synthases, and divergent genes for aquaporins. CONCLUSION We provide the first genomic characterization of hyperarid soil microbiomes below the boulders in the Atacama Desert, and report abundant and highly adapted Thaumarchaeaota with ammonia oxidation and carbon fixation potential. Ca. Nitrosodeserticola genomes provide the first metabolic and physiological insight into a thaumarchaeal lineage found in globally distributed terrestrial habitats characterized by various environmental stresses. We consequently expand not only the known genetic repertoire of Thaumarchaeota but also the diversity and microbiome functioning in hyperarid ecosystems. Video Abstract.
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Affiliation(s)
- Yunha Hwang
- Astrobiology Group, Center for Astronomy & Astrophysics, Technische Universität Berlin, 10623, Berlin, Germany
- Environmental Microbiology and Biotechnology, Department of Chemistry, University of Duisburg-Essen, 45141, Essen, Germany
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA
| | - Dirk Schulze-Makuch
- Astrobiology Group, Center for Astronomy & Astrophysics, Technische Universität Berlin, 10623, Berlin, Germany.
- Section Geomicrobiology, German Research Centre for Geosciences (GFZ), 14473, Potsdam, Germany.
- Department of Experimental Limnology, Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), 12587, Stechlin, Germany.
- School of the Environment, Washington State University, Pullman, WA, 99164, USA.
| | - Felix L Arens
- Astrobiology Group, Center for Astronomy & Astrophysics, Technische Universität Berlin, 10623, Berlin, Germany
| | - Johan S Saenz
- Research Unit for Comparative Microbiome Analysis, Helmholtz Zentrum München, 85758, Oberschleißheim, Germany
| | - Panagiotis S Adam
- Environmental Microbiology and Biotechnology, Department of Chemistry, University of Duisburg-Essen, 45141, Essen, Germany
| | - Christof Sager
- Astrobiology Group, Center for Astronomy & Astrophysics, Technische Universität Berlin, 10623, Berlin, Germany
| | - Till L V Bornemann
- Environmental Microbiology and Biotechnology, Department of Chemistry, University of Duisburg-Essen, 45141, Essen, Germany
| | - Weishu Zhao
- Department of Cell and Molecular Biology, College of the Environment and Life Sciences, University of Rhode Island, Kingston, RI, USA
| | - Ying Zhang
- Department of Cell and Molecular Biology, College of the Environment and Life Sciences, University of Rhode Island, Kingston, RI, USA
| | - Alessandro Airo
- Astrobiology Group, Center for Astronomy & Astrophysics, Technische Universität Berlin, 10623, Berlin, Germany
| | - Michael Schloter
- Research Unit for Comparative Microbiome Analysis, Helmholtz Zentrum München, 85758, Oberschleißheim, Germany
| | - Alexander J Probst
- Environmental Microbiology and Biotechnology, Department of Chemistry, University of Duisburg-Essen, 45141, Essen, Germany.
- Centre of Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstraße 5, 45141 , Essen, Germany.
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Zhang L, Yin W, Wang C, Zhang A, Zhang H, Zhang T, Ju F. Untangling Microbiota Diversity and Assembly Patterns in the World's Largest Water Diversion Canal. WATER RESEARCH 2021; 204:117617. [PMID: 34555587 DOI: 10.1016/j.watres.2021.117617] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Large water diversion projects are important constructions for reallocation of human-essential water resources. Deciphering microbiota dynamics and assembly mechanisms underlying canal water ecosystem services especially during long-distance diversion is a prerequisite for water quality monitoring, biohazard warning and sustainable management. Using a 1432-km canal of the South-to-North Water Diversion Projects as a model system, we answer three central questions: how bacterial and micro-eukaryotic communities spatio-temporally develop, how much ecological stochasticity contributes to microbiota assembly, and which immigrating populations better survive and navigate across the canal. We applied quantitative ribosomal RNA gene sequence analyses to investigate canal water microbial communities sampled over a year, as well as null model- and neutral model-based approaches to disentangle the microbiota assembly processes. Our results showed clear microbiota dynamics in community composition driven by seasonality more than geographic location, and seasonally dependent influence of environmental parameters. Overall, bacterial community was largely shaped by deterministic processes, whereas stochasticity dominated micro-eukaryotic community assembly. We defined a local growth factor (LGF) and demonstrated its innovative use to quantitatively infer microbial proliferation, unraveling taxonomically dependent population response to local environmental selection across canal sections. Using LGF as a quantitative indicator of immigrating capacities, we also found that most micro-eukaryotic populations (82%) from the source water sustained growth in the canal and better acclimated to the hydrodynamical water environment than bacteria (67%). Taxa inferred to largely propagate include Limnohabitans sp. and Cryptophyceae, potentially contributing to water auto-purification. Combined, our work poses first and unique insights into the microbiota assembly patterns and dynamics in the world's largest water diversion canal, providing important ecological knowledge for long-term sustainable water quality maintenance in such a giant engineered system.
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Affiliation(s)
- Lu Zhang
- Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China; Institute of Advanced Technology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Wei Yin
- Changjiang Water Resources Protection Institute, 515 Qintai Street, Wuhan 430051, Hubei Province, China
| | - Chao Wang
- Changjiang Water Resources Protection Institute, 515 Qintai Street, Wuhan 430051, Hubei Province, China
| | - Aijing Zhang
- Construction and Administration Bureau of South-to-North Water Diversion Middle Route Project, 1 Yuyuantan South Road, Beijing 100038, China
| | - Hong Zhang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing 100085, China
| | - Tong Zhang
- Environmental Microbiome Engineering and Biotechnology Laboratory, Department of Civil Engineering, Pokfulam Road, The University of Hong Kong, Hong Kong 999077, China
| | - Feng Ju
- Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China; Institute of Advanced Technology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China.
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9
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Antimicrobial and Antibiofilm Activities of 4,5-Dihydro-1H-pyrazole-1-carboximidamide Hydrochloride against Salmonella spp. J CHEM-NY 2021. [DOI: 10.1155/2021/5587318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In the present study, the antimicrobial and antibiofilm activities of two 4,5-dihydro-1H-pyrazole-1-carboximidamide hydrochloride, (trifluoromethyl) phenyl-substituted (compound 1) and bromophenyl-substituted (compound 2), were evaluated against four Salmonella spp. serotypes through broth microdilution and biofilm-forming activity. Further, the cytotoxicity of the compounds was evaluated by cell viability assays using cultures of HeLa and Vero cell lines, and the mutagenic potential was assessed by the Ames test. In the broth microdilution test, compound 1 inhibited 90% of the strains tested at the minimum inhibitory concentration of 62.5 μg mL−1. Furthermore, both compounds prevented biofilm formation, with a reduction of up to 5.2 log10. HeLa and Vero cells exhibited 100% viability in the presence of compound 1. In contrast, low cell viability was observed in the presence of 15 µg mL−1 of compound 2. Furthermore, no mutagenic potential was detected at any of the tested concentrations of compound 1.
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Li A, Wang Y, He Y, Liu B, Iqbal M, Mehmood K, Jamil T, Chang YF, Hu L, Li Y, Guo J, Pan J, Tang Z, Zhang H. Environmental fluoride exposure disrupts the intestinal structure and gut microbial composition in ducks. CHEMOSPHERE 2021; 277:130222. [PMID: 33794430 DOI: 10.1016/j.chemosphere.2021.130222] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/09/2021] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
Fluorine (F) and its compounds produced from industrial production and coal combustion can cause air, water and soil contamination, which can accumulate in animals, plants and humans via food chain threatening public health. Fluoride exposure affects liver, kidney, gastrointestinal and reproductive system in humans and animals. Literature regarding fluoride influence on intestinal structure and microbiota composition in ducks is scarce. This study was designed to investigate these effects by using simple and electron microscopy and 16S rRNA sequencing techniques. Results indicated an impaired structure with reduced relative distribution of goblet cells in the fluoride exposed group. Moreover, the gut microbiota showed a significant decrease in alpha diversity. Proteobacteria, Firmicutes and Bacteroidetes were the most abundant phyla in both control and fluoride-exposed groups. Specifically, fluoride exposure resulted in a significant decrease in the relative abundance of 9 bacterial phyla and 15 bacterial genera. Among them, 4 phyla (Latescibacteria, Dependentiae, Zixibacteria and Fibrobacteres) and 4 genera (Thauera, Hydrogenophaga, Reyranella and Arenimonas) weren't even detectable in the gut microbiota of the ducks. In summary, higher fluoride exposure can significantly damage the intestinal structure and gut microbial composition in ducks.
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Affiliation(s)
- Aoyun Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China; College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yajing Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.
| | - Yuanyuan He
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Bingxian Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Mudassar Iqbal
- Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Khalid Mehmood
- Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Tariq Jamil
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut, 07743, Jena, Germany
| | - Yung-Fu Chang
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Lianmei Hu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Ying Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Jianying Guo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Jiaqiang Pan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Zhaoxin Tang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.
| | - Hui Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.
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Recent advances in cellular effects of fluoride: an update on its signalling pathway and targeted therapeutic approaches. Mol Biol Rep 2021; 48:5661-5673. [PMID: 34254226 DOI: 10.1007/s11033-021-06523-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 06/25/2021] [Indexed: 12/23/2022]
Abstract
Fluoride is a natural element essential in minute quantities in human's to maintain dental and skeletal health. However, the disease fluorosis manifests itself due to excessive fluoride intake mostly through drinking water and sometimes through food. At the cellular energetics level, fluoride is a known inhibitor of glycolysis. At the tissue level, the effect of fluoride has been more pronounced in the musculoskeletal systems due to its ability to retain fluoride. Fluoride alters dentinogenesis, thereby affecting the tooth enamel formation. In bones, fluoride alters the osteogenesis by replacing calcium, thus resulting in bone deformities. In skeletal muscles, high concentration and long term exposure to fluoride causes loss of muscle proteins leading to atrophy. Although fluorosis is quite a familiar problem, the exact molecular pathway is not yet clear. Extensive research on the effects of fluoride on various organs and its toxicity was reported. Indeed, it is clear that high and chronic exposure to fluoride causes cellular apoptosis. Accordingly, in this review, we have highlighted fluoride-mediated apoptosis via two vital pathways, mitochondrial-mediated and endoplasmic reticulum stress pathways. This review also elaborates on new cellular energetic, apoptotic pathways and therapeutic strategies targeted to treat fluorosis.
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