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Diaz-Vanegas C, Héry M, Desoeuvre A, Bruneel O, Joulian C, Jacob J, Battaglia-Brunet F, Casiot C. Towards an understanding of the factors controlling bacterial diversity and activity in semi-passive Fe- and As-oxidizing bioreactors treating arsenic-rich acid mine drainage. FEMS Microbiol Ecol 2023; 99:fiad089. [PMID: 37632198 DOI: 10.1093/femsec/fiad089] [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: 02/16/2023] [Revised: 07/12/2023] [Accepted: 08/22/2023] [Indexed: 08/27/2023] Open
Abstract
Semi-passive bioreactors based on iron and arsenic oxidation and coprecipitation are promising for the treatment of As-rich acid mine drainages. However, their performance in the field remains variable and unpredictable. Two bioreactors filled with distinct biomass carriers (plastic or a mix of wood and pozzolana) were monitored during 1 year. We characterized the dynamic of the bacterial communities in these bioreactors, and explored the influence of environmental and operational drivers on their diversity and activity. Bacterial diversity was analyzed by 16S rRNA gene metabarcoding. The aioA genes and transcripts were quantified by qPCR and RT-qPCR. Bacterial communities were dominated by several iron-oxidizing genera. Shifts in the communities were attributed to operational and physiochemical parameters including the nature of the biomass carrier, the water pH, temperature, arsenic, and iron concentrations. The bioreactor filled with wood and pozzolana showed a better resilience to disturbances, related to a higher bacterial alpha diversity. We evidenced for the first time aioA expression in a treatment system, associated with the presence of active Thiomonas spp. This confirmed the contribution of biological arsenite oxidation to arsenic removal. The resilience and the functional redundancy of the communities developed in the bioreactors conferred robustness and stability to the treatment systems.
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Affiliation(s)
- Camila Diaz-Vanegas
- HydroSciences Montpellier, University of Montpellier, CNRS, IRD, Montpellier, France
- French Geological Survey (BRGM), Water, Environment, Process and Analyses Division, Orléans, France
| | - Marina Héry
- HydroSciences Montpellier, University of Montpellier, CNRS, IRD, Montpellier, France
| | - Angélique Desoeuvre
- HydroSciences Montpellier, University of Montpellier, CNRS, IRD, Montpellier, France
| | - Odile Bruneel
- HydroSciences Montpellier, University of Montpellier, CNRS, IRD, Montpellier, France
| | - Catherine Joulian
- French Geological Survey (BRGM), Water, Environment, Process and Analyses Division, Orléans, France
| | - Jérôme Jacob
- French Geological Survey (BRGM), Water, Environment, Process and Analyses Division, Orléans, France
| | | | - Corinne Casiot
- HydroSciences Montpellier, University of Montpellier, CNRS, IRD, Montpellier, France
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Rito B, Almeida D, Coimbra C, Vicente D, Francisco R, Branco R, Weigand H, Morais PV. Post-measurement compressed calibration for ICP-MS-based metal quantification in mine residues bioleaching. Sci Rep 2022; 12:16007. [PMID: 36163387 PMCID: PMC9512927 DOI: 10.1038/s41598-022-19620-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 08/31/2022] [Indexed: 11/25/2022] Open
Abstract
Bioleaching is an actual economical alternative to treat residues, which allows, depending on the chosen strategy, two possible outcomes: (1) a leachate enriched with target metals, or (2) a residue enriched in target metals through the leaching of interfering components (IC). This work aimed to study the metals released by bioprocessing the Panasqueira mine tailings, as a strategy to increase critical metals' relative concentration in residues. Biostimulation of the local microbiota was compared to a bioaugmentation approach using the autochthonous Diaphorobacter polyhydroxybutyrativorans strain B2A2W2. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) was selected to study the metals released in the leachate through multi-element external standards. A new data treatment method was developed to use a preliminary sweep of intensities to quantify the non-initial target metals concentration in the leachate, based on preliminary ICP-MS intensity measurements. The results demonstrated that biostimulation was an efficient bioleaching strategy for the IC silicon, aluminium, magnesium, selenium, manganese, zinc, iron, and copper, by decreasing concentration, resulting in a relative increase in the gallium and yttrium (10x) levels in the treated residue. The strategy followed to quantify a large number of elements with ICP-MS using a reduced number of data points for calibration proved valid and speeded up the analytical process.
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Affiliation(s)
- Beatriz Rito
- Centre for Mechanical Engineering, Materials and Processes, Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
| | - Diogo Almeida
- Centre for Mechanical Engineering, Materials and Processes, Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal.,School of Chemistry, University of St. Andrews, Fife, Scotland, UK
| | - Carina Coimbra
- Centre for Mechanical Engineering, Materials and Processes, Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
| | - Diogo Vicente
- Centre for Mechanical Engineering, Materials and Processes, Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
| | - Romeu Francisco
- Centre for Mechanical Engineering, Materials and Processes, Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
| | - Rita Branco
- Centre for Mechanical Engineering, Materials and Processes, Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
| | - Harald Weigand
- Competence Centre for Sustainable Engineering and Environmental Systems, THM University of Applied Sciences, Wiesenstr. 14, 35390, Giessen, Germany
| | - Paula Vasconcelos Morais
- Centre for Mechanical Engineering, Materials and Processes, Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal.
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Advancement of Metatranscriptomics towards Productive Agriculture and Sustainable Environment: A Review. Int J Mol Sci 2022; 23:ijms23073737. [PMID: 35409097 PMCID: PMC8998989 DOI: 10.3390/ijms23073737] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/19/2022] [Accepted: 03/26/2022] [Indexed: 01/19/2023] Open
Abstract
While chemical fertilisers and pesticides indeed enhance agricultural productivity, their excessive usage has been detrimental to environmental health. In addressing this matter, the use of environmental microbiomes has been greatly favoured as a ‘greener’ alternative to these inorganic chemicals’ application. Challenged by a significant proportion of unidentified microbiomes with unknown ecological functions, advanced high throughput metatranscriptomics is prudent to overcome the technological limitations in unfolding the previously undiscovered functional profiles of the beneficial microbiomes. Under this context, this review begins by summarising (1) the evolution of next-generation sequencing and metatranscriptomics in leveraging the microbiome transcriptome profiles through whole gene expression profiling. Next, the current environmental metatranscriptomics studies are reviewed, with the discussion centred on (2) the emerging application of the beneficial microbiomes in developing fertile soils and (3) the development of disease-suppressive soils as greener alternatives against biotic stress. As sustainable agriculture focuses not only on crop productivity but also long-term environmental sustainability, the second half of the review highlights the metatranscriptomics’ contribution in (4) revolutionising the pollution monitoring systems via specific bioindicators. Overall, growing knowledge on the complex microbiome functional profiles is imperative to unlock the unlimited potential of agricultural microbiome-based practices, which we believe hold the key to productive agriculture and sustainable environment.
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Burkartová K, Dresler J, Rídl J, Falteisek L. Population Genomics of Microbial Biostalactites: Non-recombinogenic Genome Islands and Microdiversification by Transposons. Front Microbiol 2022; 13:828531. [PMID: 35265061 PMCID: PMC8899612 DOI: 10.3389/fmicb.2022.828531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 01/17/2022] [Indexed: 11/13/2022] Open
Abstract
Intrapopulation genetic variability in prokaryotes is receiving increasing attention thanks to improving sequencing methods; however, the ability to distinguish intrapopulation variability from species clusters or initial stages of gene flow barrier development remains insufficient. To overcome this limitation, we took advantage of the lifestyle of Ferrovum myxofaciens, a species that may represent 99% of prokaryotic microbiome of biostalactites growing at acid mine drainage springs. We gained four complete and one draft metagenome-assembled F. myxofaciens genomes using Oxford Nanopore and Illumina sequencing and mapped the reads from each sample on the reference genomes to assess the intrapopulation variability. We observed two phenomena associated with intrapopulation variability: hypervariable regions affected by mobilome expansion called “scrapyards,” and variability in gene disruptions caused by transposons within each population. Both phenomena were previously described in prokaryotes. However, we present here for the first time scrapyard regression and the development of a new one. Nearly complete loss of intrapopulation short sequence variability in the old scrapyard and high variability in the new one suggest that localized gene flow suppression is necessary for scrapyard formation. Concerning the variable gene disruptions, up to 9 out of 41 occurrences per sample were located in highly conserved diguanylate cyclases/phosphodiesterases. We propose that microdiversification of life strategies may be an adaptive outcome of random diguanylate cyclase elimination. The mine biostalactites thus proved as a unique model system for describing genomic intrapopulation processes, as they offer easily sampleable units enriched in a single microbial species.
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Affiliation(s)
- Kateřina Burkartová
- Department of Philosophy and History of Science, Faculty of Science, Charles University, Prague, Czechia
| | - Jiří Dresler
- Military Medical Agency, Military Health Institute, Prague, Czechia
| | - Jakub Rídl
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
- Laboratory of Genomics and Bioinformatics, Institute of Molecular Genetics, The Czech Academy of Sciences, Prague, Czechia
- *Correspondence: Jakub Rídl,
| | - Lukáš Falteisek
- Department of Ecology, Faculty of Science, Charles University, Prague, Czechia
- Lukáš Falteisek,
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Bertin PN, Crognale S, Plewniak F, Battaglia-Brunet F, Rossetti S, Mench M. Water and soil contaminated by arsenic: the use of microorganisms and plants in bioremediation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:9462-9489. [PMID: 34859349 PMCID: PMC8783877 DOI: 10.1007/s11356-021-17817-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 11/23/2021] [Indexed: 04/16/2023]
Abstract
Owing to their roles in the arsenic (As) biogeochemical cycle, microorganisms and plants offer significant potential for developing innovative biotechnological applications able to remediate As pollutions. This possible use in bioremediation processes and phytomanagement is based on their ability to catalyse various biotransformation reactions leading to, e.g. the precipitation, dissolution, and sequestration of As, stabilisation in the root zone and shoot As removal. On the one hand, genomic studies of microorganisms and their communities are useful in understanding their metabolic activities and their interaction with As. On the other hand, our knowledge of molecular mechanisms and fate of As in plants has been improved by laboratory and field experiments. Such studies pave new avenues for developing environmentally friendly bioprocessing options targeting As, which worldwide represents a major risk to many ecosystems and human health.
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Affiliation(s)
- Philippe N Bertin
- Génétique Moléculaire, Génomique et Microbiologie, UMR7156 CNRS - Université de Strasbourg, Strasbourg, France.
| | - Simona Crognale
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Rome, Italy
| | - Frédéric Plewniak
- Génétique Moléculaire, Génomique et Microbiologie, UMR7156 CNRS - Université de Strasbourg, Strasbourg, France
| | | | - Simona Rossetti
- Water Research Institute, National Research Council of Italy (IRSA - CNR), Rome, Italy
| | - Michel Mench
- Univ. Bordeaux, INRAE, BIOGECO, F-33615, Pessac, France
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Microorganisms and metals: a love-hate relationship? Res Microbiol 2020; 171:1-2. [DOI: 10.1016/j.resmic.2019.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 11/26/2019] [Indexed: 11/20/2022]
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