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Guglielmin M, Azzaro M, Buzzini P, Battistel D, Roman M, Ponti S, Turchetti B, Sannino C, Borruso L, Papale M, Lo Giudice A. A possible unique ecosystem in the endoglacial hypersaline brines in Antarctica. Sci Rep 2023; 13:177. [PMID: 36604573 PMCID: PMC9814585 DOI: 10.1038/s41598-022-27219-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 12/28/2022] [Indexed: 01/06/2023] Open
Abstract
Here, we present the results related to a new unique terrestrial ecosystem found in an englacial hypersaline brine found in Northern Victoria Land (Antarctica). Both the geochemistry and microbial (prokaryotic and fungal) diversity revealed an unicity with respect to all the other known Antarctic brines and suggested a probable ancient origin mainly due a progressive cryoconcentration of seawater. The prokaryotic community presented some peculiarities, such as the occurrence of sequences of Patescibacteria (which can thrive in nutrient-limited water environments) or few Spirochaeta, and the presence of archaeal sequences of Methanomicrobia closely related to Methanoculleus, a methanogen commonly detected in marine and estuarine environments. The high percentage (35%) of unassigned fungal taxa suggested the presence of a high degree of undiscovered diversity within a structured fungal community (including both yeast and filamentous life forms) and reinforce the hypothesis of a high degree of biological uniqueness of the habitat under study.
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Affiliation(s)
- M. Guglielmin
- grid.18147.3b0000000121724807Department of Theoretical and Applied Sciences, Insubria University, Via Dunant, 3, 21100 Varese, Italy ,grid.18147.3b0000000121724807Climate Change Research Center, Insubria University, Via Regina Teodolinda, 37, 22100 Como, Italy
| | - M. Azzaro
- grid.5326.20000 0001 1940 4177Institute of Polar Sciences, National Research Council, Spianata S. Raineri. 86, 98122 Messina, Italy
| | - P. Buzzini
- grid.9027.c0000 0004 1757 3630Department of Agricultural, Food and Environmental Sciences, University of Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy
| | - D. Battistel
- grid.5326.20000 0001 1940 4177Institute of Polar Sciences, National Research Council, Spianata S. Raineri. 86, 98122 Messina, Italy ,grid.7240.10000 0004 1763 0578Department of Environmental Sciences, Informatics and Statistics, University Ca’ Foscari of Venice, Via Torino, 155, 30172 Mestre, VE Italy
| | - M. Roman
- grid.7240.10000 0004 1763 0578Department of Environmental Sciences, Informatics and Statistics, University Ca’ Foscari of Venice, Via Torino, 155, 30172 Mestre, VE Italy
| | - S. Ponti
- grid.18147.3b0000000121724807Department of Theoretical and Applied Sciences, Insubria University, Via Dunant, 3, 21100 Varese, Italy
| | - B. Turchetti
- grid.9027.c0000 0004 1757 3630Department of Agricultural, Food and Environmental Sciences, University of Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy
| | - C. Sannino
- grid.9027.c0000 0004 1757 3630Department of Agricultural, Food and Environmental Sciences, University of Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy
| | - L. Borruso
- grid.34988.3e0000 0001 1482 2038Faculty of Science and Technology, Free University of Bozen-Bolzano, Piazza Università 5, 9100 Bozen-Bolzano, Italy
| | - M. Papale
- grid.5326.20000 0001 1940 4177Institute of Polar Sciences, National Research Council, Spianata S. Raineri. 86, 98122 Messina, Italy
| | - A. Lo Giudice
- grid.5326.20000 0001 1940 4177Institute of Polar Sciences, National Research Council, Spianata S. Raineri. 86, 98122 Messina, Italy
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Battistel D, Citron A, Veclani D, Daniele S. Pt Nanoelectrodes Sealed in Quartz Capillaries Modified with Underpotential‐Deposited Bismuth for Formic Acid Electrooxidation. ChemElectroChem 2022. [DOI: 10.1002/celc.202200754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dario Battistel
- Ca' Foscari University of Venice: Universita Ca' Foscari Environmental Sciences, Informatics and Statistics Venice ITALY
| | - Alberto Citron
- Ca' Foscari University of Venice: Universita Ca' Foscari Molecular Sciences and Nanosystems Venice ITALY
| | - Daniele Veclani
- CNR: Consiglio Nazionale delle Ricerche The Institute of Organic Synthesis and Photoreactivity (ISOF) ITALY
| | - Salvatore Daniele
- Ca'Foscari University of Venice: Universita Ca' Foscari Scienze Molecolari e Nanosistemi Via Torino, 155 30172 Venice ITALY
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Argiriadis E, Bortolini M, Kehrwald NM, Roman M, Turetta C, Hanif S, Erhenhi EO, Aliaga JMR, McWethy DB, Myrbo AE, Pauchard A, Barbante C, Battistel D. Rapa Nui (Easter Island) Rano Raraku crater lake basin: Geochemical characterization and implications for the Ahu-Moai Period. PLoS One 2021; 16:e0254793. [PMID: 34644295 PMCID: PMC8513918 DOI: 10.1371/journal.pone.0254793] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 07/05/2021] [Indexed: 11/28/2022] Open
Abstract
Rano Raraku, the crater lake constrained by basaltic tuff that served as the primary quarry used to construct the moai statues on Rapa Nui (Easter Island), has experienced fluctuations in lake level over the past centuries. As one of the only freshwater sources on the island, understanding the present and past geochemical characteristics of the lake water is critical to understand if the lake could have been a viable freshwater source for Rapa Nui. At the time of sampling in September 2017, the maximum lake depth was ~1 m. The lake level has substantially declined in the subsequent years, with the lake drying almost completely in January 2018. The lake is currently characterized by highly anoxic conditions, with a predominance of ammonium ions on nitrates, a high concentration of organic carbon in the water-sediment interface and reducing conditions of the lake, as evidenced by Mn/Fe and Cr/V ratios. Our estimates of past salinity inferred from the chloride mass balance indicates that it was unlikely that Rano Raraku provided a viable freshwater source for early Rapa Nui people. The installation of an outlet pipe around 1950 that was active until the late 1970s, as well as grazing of horses on the lake margins appear to have significantly impacted the geochemical conditions of Rano Raraku sediments and lake water in recent decades. Such impacts are distinct from natural environmental changes and highlight the need to consider the sensitivity of the lake geochemistry to human activities.
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Affiliation(s)
- E. Argiriadis
- Institute of Polar Sciences CNR-ISP, Venice, Italy
- Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, Venice, Italy
| | - M. Bortolini
- Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, Venice, Italy
| | - N. M. Kehrwald
- U.S. Geological Survey, Geosciences and Environmental Change Science Center, Denver, CO, United States of America
| | - M. Roman
- Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, Venice, Italy
| | - C. Turetta
- Institute of Polar Sciences CNR-ISP, Venice, Italy
| | - S. Hanif
- Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, Venice, Italy
| | - E. O. Erhenhi
- Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, Venice, Italy
| | | | - D. B. McWethy
- Department of Earth Sciences, Montana State University, Bozeman, MT, United States of America
| | - A. E. Myrbo
- Department of Earth Sciences, University of Minnesota, Twin Cities, Minneapolis, MN, United States of America
| | - A. Pauchard
- Laboratorio de Invasiones Biológicas, Facultad de Ciencias Forestales, Universidad de Concepción, Concepción, Chile
| | - C. Barbante
- Institute of Polar Sciences CNR-ISP, Venice, Italy
- Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, Venice, Italy
| | - D. Battistel
- Institute of Polar Sciences CNR-ISP, Venice, Italy
- Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, Venice, Italy
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Argiriadis E, Martino M, Segnana M, Poto L, Vecchiato M, Battistel D, Gambaro A, Barbante C. Multi-proxy biomarker determination in peat: Optimized extraction and cleanup method for paleoenvironmental application. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104821] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Sannino C, Borruso L, Mezzasoma A, Battistel D, Zucconi L, Selbmann L, Azzaro M, Onofri S, Turchetti B, Buzzini P, Guglielmin M. Intra- and inter-cores fungal diversity suggests interconnection of different habitats in an Antarctic frozen lake (Boulder Clay, Northern Victoria Land). Environ Microbiol 2020; 22:3463-3477. [PMID: 32510727 DOI: 10.1111/1462-2920.15117] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/30/2020] [Accepted: 06/02/2020] [Indexed: 01/28/2023]
Abstract
A perennially frozen lake at Boulder Clay site (Victoria Land, Antarctica), characterized by the presence of frost mounds, have been selected as an in situ model for ecological studies. Different samples of permafrost, glacier ice and brines have been studied as a unique habitat system. An additional sample of brines (collected in another frozen lake close to the previous one) was also considered. Alpha- and beta-diversity of fungal communities showed both intra- and inter-cores significant (p < 0.05) differences, which suggest the presence of interconnection among the habitats. Therefore, the layers of frost mound and the deep glacier could be interconnected while the brines could probably be considered as an open habitat system not interconnected with each other. Moreover, the absence of similarity between the lake ice and the underlying permafrost suggested that the lake is perennially frozen based. The predominance of positive significant (p < 0.05) co-occurrences among some fungal taxa allowed to postulate the existence of an ecological equilibrium in the habitats systems. The positive significant (p < 0.05) correlation between salt concentration, total organic carbon and pH, and some fungal taxa suggests that a few abiotic parameters could drive fungal diversity inside these ecological niches.
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Affiliation(s)
- Ciro Sannino
- Department of Agricultural, Food and Environmental Sciences, Industrial Yeasts Collection DBVPG, University of Perugia, Borgo XX giugno 74, Perugia, 06121, Italy
| | - Luigimaria Borruso
- Faculty of Science and Technology, Free University of Bozen-Bolzano, Bozen-Bolzano, Italy
| | - Ambra Mezzasoma
- Department of Agricultural, Food and Environmental Sciences, Industrial Yeasts Collection DBVPG, University of Perugia, Borgo XX giugno 74, Perugia, 06121, Italy
| | - Dario Battistel
- Department of Environmental Science, Informatics and Statistics, University Ca' Foscari, Venice, Italy
| | - Laura Zucconi
- Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy
| | - Laura Selbmann
- Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy.,Italian Antarctic National Museum (MNA), Mycological Section, Genoa, Italy
| | - Maurizio Azzaro
- Institute of Polar Sciences, National Research Council, Messina, Italy
| | - Silvano Onofri
- Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy
| | - Benedetta Turchetti
- Department of Agricultural, Food and Environmental Sciences, Industrial Yeasts Collection DBVPG, University of Perugia, Borgo XX giugno 74, Perugia, 06121, Italy
| | - Pietro Buzzini
- Department of Agricultural, Food and Environmental Sciences, Industrial Yeasts Collection DBVPG, University of Perugia, Borgo XX giugno 74, Perugia, 06121, Italy
| | - Mauro Guglielmin
- Department of Theoretical and Applied Sciences, Insubria University, Varese, Italy
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Rizzo C, Conte A, Azzaro M, Papale M, Rappazzo AC, Battistel D, Roman M, Lo Giudice A, Guglielmin M. Cultivable Bacterial Communities in Brines from Perennially Ice-Covered and Pristine Antarctic Lakes: Ecological and Biotechnological Implications. Microorganisms 2020; 8:E819. [PMID: 32486118 PMCID: PMC7355736 DOI: 10.3390/microorganisms8060819] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/26/2020] [Accepted: 05/28/2020] [Indexed: 02/07/2023] Open
Abstract
The diversity and biotechnological potentialities of bacterial isolates from brines of three Antarctic lakes of the Northern Victoria Land (namely Boulder Clay and Tarn Flat areas) were first explored. Cultivable bacterial communities were analysed mainly in terms of bacterial response to contaminants (i.e., antibiotics and heavy metals) and oxidation of contaminants (i.e., aliphatic and aromatic hydrocarbons and polychlorobiphenyls). Moreover, the biosynthesis of biomolecules (antibiotics, extracellular polymeric substances and enzymes) with applications for human health and environmental protection was assayed. A total of 74 and 141 isolates were retrieved from Boulder Clay and Tarn Flat brines, respectively. Based on 16S rRNA gene sequence similarities, bacterial isolates represented three phyla, namely Proteobacteria (i.e., Gamma- and Alphaproteobacteria), Bacteroidetes and Actinobacteria, with differences encountered among brines. At genus level, Rhodobacter, Pseudomonas, Psychrobacter and Leifsonia members were dominant. Results obtained from this study on the physiological and enzymatic features of cold-adapted isolates from Antarctic lake brines provide interesting prospects for possible applications in the biotechnological field through future targeted surveys. Finally, findings on contaminant occurrence and bacterial response suggest that bacteria might be used as bioindicators for tracking human footprints in these remote polar areas.
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Affiliation(s)
- Carmen Rizzo
- Stazione Zoologica Anton Dohrn, Department of Marine Biotechnology, National Institute of Biology, Villa Pace, 98167 Messina, Italy;
| | - Antonella Conte
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy;
| | - Maurizio Azzaro
- Institute of Polar Sciences, National Research Council (ISP-CNR), 98122 Messina, Italy; (M.A.); (M.P.); (A.C.R.)
| | - Maria Papale
- Institute of Polar Sciences, National Research Council (ISP-CNR), 98122 Messina, Italy; (M.A.); (M.P.); (A.C.R.)
| | - Alessandro C. Rappazzo
- Institute of Polar Sciences, National Research Council (ISP-CNR), 98122 Messina, Italy; (M.A.); (M.P.); (A.C.R.)
| | - Dario Battistel
- Dipartimento di Scienze Ambientali, Informatica e Statistica, University Ca’ Foscari, 30123 Venezia, Italy; (D.B.); (M.R.)
| | - Marco Roman
- Dipartimento di Scienze Ambientali, Informatica e Statistica, University Ca’ Foscari, 30123 Venezia, Italy; (D.B.); (M.R.)
| | - Angelina Lo Giudice
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy;
- Institute of Polar Sciences, National Research Council (ISP-CNR), 98122 Messina, Italy; (M.A.); (M.P.); (A.C.R.)
| | - Mauro Guglielmin
- Dipartimento di Scienze Teoriche e Applicate, University of Insubria, 21100 Varese, Italy;
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Zangrando R, Zanella V, Karroca O, Barbaro E, Kehrwald NM, Battistel D, Morabito E, Gambaro A, Barbante C. Dissolved organic matter in the deep TALDICE ice core: A nano-UPLC-nano-ESI-HRMS method. Sci Total Environ 2020; 700:134432. [PMID: 31693954 DOI: 10.1016/j.scitotenv.2019.134432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/11/2019] [Accepted: 09/11/2019] [Indexed: 06/10/2023]
Abstract
Trace organic compounds in deep ice cores supply important paleoclimatic information. Untargeted analyses of dissolved organic matter provide an overview of molecular species in ice samples however, sample volumes usually required for these analyses are generally not available from deep ice cores. Here, we developed an analytical method using a nano-UPLC-nano-ESI-HRMS to detect major molecular species in ice cores. Samples (4 µL) from the TALos Dome Ice CorE (TALDICE), allowed investigating molecular species across a range of depths including during glacial and interglacial periods. We detected 317 chemical species that were tentatively assigned to fatty acids, hydroxy fatty acids and their degradation products (oxo-fatty acids and dicarboxylic acids), as well as oxidation byproducts of isoprene and monoterpenes. These compounds indicate that the main sources of the organic fraction are microbes as well as primary and secondary aerosols. Interglacial samples encompass a wide range of species including compounds from the oxidation of isoprene and monoterpenes as well as unsaturated fatty acids, while the glacial samples contained less diverse species. This difference may be due to decreased temperatures during the glacial period inhibiting terrestrial vegetation growth and increasing the sea ice extent, thereby weakening the emission sources.
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Affiliation(s)
- Roberta Zangrando
- Institute of Polar Sciences CNR, Via Torino 155, 30172 Mestre (VE), Italy.
| | - Veronica Zanella
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Mestre, VE, Italy
| | - Ornela Karroca
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Mestre, VE, Italy
| | - Elena Barbaro
- Institute of Polar Sciences CNR, Via Torino 155, 30172 Mestre (VE), Italy
| | - Natalie M Kehrwald
- U.S. Geological Survey, Geosciences and Environmental Change Science Center, Denver Federal Center, MS 980, Denver, CO 80225, USA
| | - Dario Battistel
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Mestre, VE, Italy
| | - Elisa Morabito
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Mestre, VE, Italy
| | - Andrea Gambaro
- Institute of Polar Sciences CNR, Via Torino 155, 30172 Mestre (VE), Italy; Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Mestre, VE, Italy
| | - Carlo Barbante
- Institute of Polar Sciences CNR, Via Torino 155, 30172 Mestre (VE), Italy; Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Mestre, VE, Italy
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Li Q, Wang N, Barbante C, Kang S, Callegaro A, Battistel D, Argiriadis E, Wan X, Yao P, Pu T, Wu X, Han Y, Huai Y. Biomass burning source identification through molecular markers in cryoconites over the Tibetan Plateau. Environ Pollut 2019; 244:209-217. [PMID: 30340167 DOI: 10.1016/j.envpol.2018.10.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 10/05/2018] [Accepted: 10/06/2018] [Indexed: 06/08/2023]
Abstract
Cryoconite is a dark, dusty aggregate of mineral particles, organic matter, and microorganisms transported by wind and deposited on glacier surfaces. It can accelerate glacier melting and alter glacier mass balances by reducing the surface albedo of glaciers. Biomass burning in the Tibetan Plateau, especially in the glacier cryoconites, is poorly understood. Retene, levoglucosan, mannosan and galactosan can be generated by the local fires or transported from the biomass burning regions over long distances. In the present study, we analyzed these four molecular markers in cryoconites of seven glaciers from the northern to southern Tibetan Plateau. The highest levels of levoglucosan and retene were found in cryoconites of the Yulong Snow Mountain and Tienshan glaciers with 171.4 ± 159.4 ng g-1 and 47.0 ± 10.5 ng g-1 dry weight (d.w.), respectively. The Muztag glacier in the central Tibetan Plateau contained the lowest levels of levoglucosan and retene with mean values of 59.8 ng g-1 and 0.4 ± 0.1 ng g-1 d.w., respectively. In addition, the vegetation changes and the ratios of levoglucosan to mannosan and retene indicate that combustion of conifers significantly contributes to biomass burning of the cryoconites in the Yulong Snow Mountain and Tienshan glacier. Conversely, biomass burning tracers in cryoconites of Dongkemadi, Yuzhufeng, Muztag, Qiyi and Laohugou glaciers are derived from the combustion of different types of biomass including softwood, hardwood and grass.
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Affiliation(s)
- Quanlian Li
- State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou, 730000, China.
| | - Ninglian Wang
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Xi'an, 710127, China; Institute of Earth Surface System and Hazards, Northwest University, Xi'an, 710127, China; College of Urban and Environmental Sciences, Northwest University, Xi'an, 710127, China
| | - Carlo Barbante
- Department of Environmental Sciences, Informatics and Statistics, Ca'Foscari, University of Venice, Venice, 30172, Italy; Institute for the Dynamics of Environmental Processes-CNR, Venice, 30172, Italy
| | - Shichang Kang
- State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou, 730000, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Alice Callegaro
- Department of Environmental Sciences, Informatics and Statistics, Ca'Foscari, University of Venice, Venice, 30172, Italy; Institute for the Dynamics of Environmental Processes-CNR, Venice, 30172, Italy
| | - Dario Battistel
- Department of Environmental Sciences, Informatics and Statistics, Ca'Foscari, University of Venice, Venice, 30172, Italy; Institute for the Dynamics of Environmental Processes-CNR, Venice, 30172, Italy
| | - Elena Argiriadis
- Department of Environmental Sciences, Informatics and Statistics, Ca'Foscari, University of Venice, Venice, 30172, Italy
| | - Xin Wan
- Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Ping Yao
- CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, 100085, China; Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Tao Pu
- State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou, 730000, China
| | - Xiaobo Wu
- State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou, 730000, China
| | - Yu Han
- Surveying and Mapping Engineering Institute of Gansu Province, China
| | - Yanping Huai
- Surveying and Mapping Engineering Institute of Gansu Province, China
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Baldi F, Gallo M, Daniele S, Battistel D, Faleri C, Kodre A, Arčon I. An extracellular polymeric substance quickly chelates mercury(II) with N-heterocyclic groups. Chemosphere 2017; 176:296-304. [PMID: 28273537 DOI: 10.1016/j.chemosphere.2017.02.093] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 02/15/2017] [Accepted: 02/17/2017] [Indexed: 05/26/2023]
Abstract
A strain of Klebsiella oxytoca DSM 29614 is grown on sodium citrate in the presence of 50 mg l-1 of Hg as Hg(NO3)2. During growth, the strain produces an extracellular polymeric substance (EPS), constituted by a mixture of proteins and a specific exopolysaccharide. The protein components, derived from the outer membrane of cells, are co-extracted with the extracellular exopolysaccharide using ethanol. The extracted EPS contains 7.5% of Hg (total amount). This indicates that EPS is an excellent material for the biosorption of Hg2+, through chemical complexation with the EPS components. The binding capacity of these species towards Hg2+ is studied by cyclic voltammetry, and Hg L3-edge XANES and EXAFS spectroscopy. The results found indicate that Hg2+ is mainly bound to the nitrogen of the imidazole ring or other N-heterocycle compounds. The hydroxyl moities of sugars and/or the carboxyl groups of two glucuronic acids in the polysaccharide can also play an important role in sequestring Hg2+ ions. However, N-heterocyclic groups of proteins bind Hg2+ faster than hydroxyl and carboxyl groups of the polysaccharide.
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Affiliation(s)
- Franco Baldi
- Dipartimento di Scienze Molecolari e Nanosistemi, University Cà Foscari Venezia, Via Torino 155, 30172, Mestre Venezia, Italy.
| | - Michele Gallo
- Dipartimento di Scienze Molecolari e Nanosistemi, University Cà Foscari Venezia, Via Torino 155, 30172, Mestre Venezia, Italy
| | - Salvatore Daniele
- Dipartimento di Scienze Molecolari e Nanosistemi, University Cà Foscari Venezia, Via Torino 155, 30172, Mestre Venezia, Italy
| | - Dario Battistel
- Dipartimento di Scienze Ambientali, Informatica e Statistica, University Cà Foscari Venezia, Via Torino 155, 30172, Mestre Venezia, Italy; Institute for the Dynamics of Environmental Processes, IDPA/CNR, Via Torino, 155, 30172, Mestre Venezia, Venice, Italy
| | - Claudia Faleri
- Dipartimento Scienze della Vita, Siena University, Via Mattioli 4, 53100, Siena, Italy
| | - Alojz Kodre
- Jozef Stefan Institute, Jamova 39, Ljubljana, Slovenia; Faculty of Mathematics & Physics, University of Ljubljana, Slovenia
| | - Iztok Arčon
- Jozef Stefan Institute, Jamova 39, Ljubljana, Slovenia; University of Nova Gorica, Vipavska 13, Nova Gorica, Slovenia
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Pecchielan G, Battistel D, Daniele S. Scanning Electrochemical Microscopy and Voltammetric Investigation of Silver Nanoparticles Embedded within a Nafion Membrane. ChemElectroChem 2016. [DOI: 10.1002/celc.201600483] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Giulia Pecchielan
- Department of Molecular Sciences and Nanosystems; University Cà Foscari Venice; Via Torino 155 30172 Venezia-Mestre Italy
| | - Dario Battistel
- Department of Environmental Sciences Informatics and Statistics; University Cà Foscari Venice, Institute for the Dynamics of Environmental Processes -CNR; Via Torino 155 30172 Venice Italy
| | - Salvatore Daniele
- Department of Molecular Sciences and Nanosystems; University Cà Foscari Venice; Via Torino 155 30172 Venezia-Mestre Italy
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Dallo F, Battistel D, Piazza R, Gabrieli J, Filippi JJ, Baldovini N, Barbante C. Direct immersion solid-phase microextraction with gas chromatography and mass spectrometry for the determination of specific biomarkers of human sweat in melted snow. J Sep Sci 2016; 39:1300-9. [DOI: 10.1002/jssc.201501097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 01/13/2016] [Accepted: 01/15/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Federico Dallo
- Department of Environmental Science, Informatics and Statistics; Ca’ Foscari University of Venice; Venice Italy
| | - Dario Battistel
- Department of Environmental Science, Informatics and Statistics; Ca’ Foscari University of Venice; Venice Italy
- Institute for the Dynamics of Environmental Processes - CNR; University Ca’ Foscari of Venice; Venice Italy
| | - Rossano Piazza
- Department of Environmental Science, Informatics and Statistics; Ca’ Foscari University of Venice; Venice Italy
- Institute for the Dynamics of Environmental Processes - CNR; University Ca’ Foscari of Venice; Venice Italy
| | - Jacopo Gabrieli
- Institute for the Dynamics of Environmental Processes - CNR; University Ca’ Foscari of Venice; Venice Italy
| | - Jean-Jacques Filippi
- Institut de Chimie de Nice UMR 7272 CNRS; Université Nice-Sophia Antipolis; Parc Valrose France
| | - Nicolas Baldovini
- Institut de Chimie de Nice UMR 7272 CNRS; Université Nice-Sophia Antipolis; Parc Valrose France
| | - Carlo Barbante
- Department of Environmental Science, Informatics and Statistics; Ca’ Foscari University of Venice; Venice Italy
- Institute for the Dynamics of Environmental Processes - CNR; University Ca’ Foscari of Venice; Venice Italy
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Baldi F, Daniele S, Gallo M, Paganelli S, Battistel D, Piccolo O, Faleri C, Puglia AM, Gallo G. Polysaccharide-based silver nanoparticles synthesized by Klebsiella oxytoca DSM 29614 cause DNA fragmentation in E. coli cells. Biometals 2016; 29:321-31. [PMID: 26886276 DOI: 10.1007/s10534-016-9918-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 02/15/2016] [Indexed: 01/17/2023]
Abstract
Silver nanoparticles (AgNPs), embedded into a specific exopolysaccharide (EPS), were produced by Klebsiella oxytoca DSM 29614 by adding AgNO3 to the cultures during exponential growth phase. In particular, under aerobic or anaerobic conditions, two types of silver nanoparticles, named AgNPs-EPS(aer) and the AgNPs-EPS(anaer), were produced respectively. The effects on bacterial cells was demonstrated by using Escherichia coli K12 and Kocuria rhizophila ATCC 9341 (ex Micrococcus luteus) as Gram-negative and Gram-positive tester strains, respectively. The best antimicrobial activity was observed for AgNPs-EPS(aer), in terms of minimum inhibitory concentrations and minimum bactericidal concentrations. Observations by transmission electron microscopy showed that the cell morphology of both tester strains changed during the exposition to AgNPs-EPS(aer). In particular, an electron-dense wrapped filament was observed in E. coli cytoplasm after 3 h of AgNPs-EPS(aer) exposition, apparently due to silver accumulation in DNA, and both E. coli and K. rhizophila cells were lysed after 18 h of exposure to AgNPs-EPS(aer). The DNA breakage in E. coli cells was confirmed by the comparison of 3-D fluorescence spectra fingerprints of DNA. Finally the accumulation of silver on DNA of E. coli was confirmed directly by a significant Ag(+) release from DNA, using the scanning electrochemical microscopy and the voltammetric determinations.
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Affiliation(s)
- Franco Baldi
- Dipartimento di Scienze Molecolari e Nanosistemi, University Cà Foscari of Venice, Via Torino 155, 30172, Venice, Italy.
| | - Salvatore Daniele
- Dipartimento di Scienze Molecolari e Nanosistemi, University Cà Foscari of Venice, Via Torino 155, 30172, Venice, Italy
| | - Michele Gallo
- Dipartimento di Scienze Molecolari e Nanosistemi, University Cà Foscari of Venice, Via Torino 155, 30172, Venice, Italy
| | - Stefano Paganelli
- Dipartimento di Scienze Molecolari e Nanosistemi, University Cà Foscari of Venice, Via Torino 155, 30172, Venice, Italy
| | - Dario Battistel
- Dipartimento di Scienze Ambientali, Infomatica e Statistica, University Cà Foscari of Venice, Via Torino 155, 30172, Venice, Italy
| | | | - Claudia Faleri
- Dipartimento Scienze della Vita, University of Siena, Via Mattioli 4, 53100, Siena, Italy
| | - Anna Maria Puglia
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), University of Palermo, Viale delle Scienze - ed. 16, 90128, Palermo, Italy
| | - Giuseppe Gallo
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), University of Palermo, Viale delle Scienze - ed. 16, 90128, Palermo, Italy
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Santos CS, Lima AS, Battistel D, Daniele S, Bertotti M. Fabrication and Use of Dual-function Iridium Oxide Coated Gold SECM Tips. An Application to pH Monitoring above a Copper Electrode Surface during Nitrate Reduction. ELECTROANAL 2016. [DOI: 10.1002/elan.201501082] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Carla S. Santos
- Institute of Chemistry; University of São Paulo; Av. Professor Lineu Prestes, 748 05508-000 São Paulo Brazil
| | - Alex S. Lima
- Institute of Chemistry; University of São Paulo; Av. Professor Lineu Prestes, 748 05508-000 São Paulo Brazil
| | - Dario Battistel
- Department of Environmental Science; Informatics and Statistics; University Cà Foscari Venice; Via Torino 155 30127 Venice Italy
- Institute for the Dynamics of Environmental Processes - CNR; University Ca' Foscari of Venice; Via Torino 155 30123 Venice Italy
| | - Salvatore Daniele
- Department of Molecular Sciences and Nanosystems; University Cà Foscari Venice; Via Torino 155 30127 Venice Italy
| | - Mauro Bertotti
- Institute of Chemistry; University of São Paulo; Av. Professor Lineu Prestes, 748 05508-000 São Paulo Brazil
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Bortoluzzi M, Battistel D, Albertin G, Daniele S, Enrichi F, Rumonato R. Mononuclear and heterodinuclear phenanthrolinedione complexes of d- and f-block elements‡. Chemical Papers 2016. [DOI: 10.1515/chempap-2015-0140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
1,10-Phenanthroline-5,6-dione (Phd) complexes of group 3 and lanthanide elements having formulae Ln(hfac)
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Battistel D, Piazza R, Argiriadis E, Marchiori E, Radaelli M, Barbante C. GC-MS method for determining faecal sterols as biomarkers of human and pastoral animal presence in freshwater sediments. Anal Bioanal Chem 2015; 407:8505-14. [PMID: 26342314 DOI: 10.1007/s00216-015-8998-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Revised: 08/17/2015] [Accepted: 08/20/2015] [Indexed: 12/01/2022]
Abstract
In order to determine sterols and stanols in freshwater sediments to reconstruct the past presence of humans and pastoral animals, we developed an analytical method based on pressurised liquid extraction (PLE), clean-up performed using solid phase extraction (SPE) and sterol determination using gas chromatography-mass spectrometry (GC-MS) analysis. PLE extraction conditions were optimised using dichloromethane (DCM) and DCM/methanol mixtures. Clean-up was performed with 2 g silica SPE cartridges, and the concentrated extracts were eluted with 70 mL DCM. Extraction yield was evaluated using an in-house reference material spiked with (13)C-labelled cholesterol and aged for 10 days. In comparison with pre-extraction, where the sediment is extracted and then spiked with a known analyte concentration, this approach preserves the original composition of the sediment. DCM and DCM/methanol mixtures resulted in high extraction yields ranging from 86 to 92 % with good reproducibility (relative standard deviation (RSD) 5-8 %). PLE extraction yields obtained with DCM as the extracting solvent were about 1.5 times higher than extractions using an ultrasonic bath. The solvent extraction mixture and matrix composition strongly affected the solvent extraction composition where higher overall recoveries (70-80 %) for each compound were obtained with DCM. The extraction mixture and matrix composition also affected the analyte concentrations, resulting in a method precision ranging from 1 to 18 %. Diatomaceous earth spiked with 10 to 100 ng of sterols, and environmental samples fortified with suitable amounts of sterols provided apparent recovery values ranging from 90 to 110 %. We applied the method to environmental samples both close to and upstream from sewage discharge zones, resulting in substantially higher faecal sterol (FeSt) concentrations near the sewage. In addition, we also applied the method to a 37-cm freshwater sediment core in order to evaluate its applicability for obtaining vertical sterol profiles.
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Affiliation(s)
- Dario Battistel
- Department of Environmental Science, Informatics and Statistics, University Ca' Foscari of Venice, Via Torino, 155, 30172, Venezia Mestre, Venice, Italy. .,Institute for the Dynamics of Environmental Processes, IDPA/CNR, Via Torino, 155, 30172, Venezia Mestre, Venice, Italy.
| | - Rossano Piazza
- Department of Environmental Science, Informatics and Statistics, University Ca' Foscari of Venice, Via Torino, 155, 30172, Venezia Mestre, Venice, Italy.,Institute for the Dynamics of Environmental Processes, IDPA/CNR, Via Torino, 155, 30172, Venezia Mestre, Venice, Italy
| | - Elena Argiriadis
- Department of Environmental Science, Informatics and Statistics, University Ca' Foscari of Venice, Via Torino, 155, 30172, Venezia Mestre, Venice, Italy
| | - Enrico Marchiori
- Department of Environmental Science, Informatics and Statistics, University Ca' Foscari of Venice, Via Torino, 155, 30172, Venezia Mestre, Venice, Italy
| | - Marta Radaelli
- Institute for the Dynamics of Environmental Processes, IDPA/CNR, Via Torino, 155, 30172, Venezia Mestre, Venice, Italy
| | - Carlo Barbante
- Department of Environmental Science, Informatics and Statistics, University Ca' Foscari of Venice, Via Torino, 155, 30172, Venezia Mestre, Venice, Italy.,Institute for the Dynamics of Environmental Processes, IDPA/CNR, Via Torino, 155, 30172, Venezia Mestre, Venice, Italy
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Battistel D, Baldi F, Gallo M, Faleri C, Daniele S. Characterisation of biosynthesised silver nanoparticles by scanning electrochemical microscopy (SECM) and voltammetry. Talanta 2014; 132:294-300. [PMID: 25476311 DOI: 10.1016/j.talanta.2014.09.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 09/05/2014] [Accepted: 09/11/2014] [Indexed: 10/24/2022]
Abstract
Silver nanoparticles (AgNPs) were biosynthesised by a Klebsiella oxytoca strain BAS-10, which, during its growth, is known to produce a branched exopolysaccharide (EPS). Klebsiella oxytoca cultures, treated with AgNO3 and grown under either aerobic or anaerobic conditions, produced silver nanoparticles embedded in EPS (AgNPs-EPS) containing different amounts of Ag(0) and Ag(I) forms. The average size of the AgNPs-EPS was determined by transmission electron microscopy, while the relative abundance of Ag(0)- or Ag(I)-containing AgNPs-EPS was established by scanning electrochemical microscopy (SECM). Moreover, the release of silver(I) species from the various types of AgNPs-EPS was investigated by combining SECM with anodic stripping voltammetry. These measurements allowed obtaining information on the kinetic of silver ions release from AgNPs-EPS and their concentration profiles at the substrate/water interface.
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Affiliation(s)
- Dario Battistel
- Dipartimento di Scienze Ambientali, Infomatica e Statistica, University Cà Foscari Venice. Calle Larga Santa Marta 2137. 30127 Venice, (I).
| | - Franco Baldi
- Dipartimento di Scienze Molecolari e Nanosistemi, University Cà Foscari Venice. Calle Larga Santa Marta 2137. 30127 Venice, (I)
| | - Michele Gallo
- Dipartimento di Scienze Molecolari e Nanosistemi, University Cà Foscari Venice. Calle Larga Santa Marta 2137. 30127 Venice, (I)
| | - Claudia Faleri
- Dipartimento Scienze della Vita, Siena University, via Mattioli 4, 53100 Siena (I)
| | - Salvatore Daniele
- Dipartimento di Scienze Molecolari e Nanosistemi, University Cà Foscari Venice. Calle Larga Santa Marta 2137. 30127 Venice, (I).
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Bortoluzzi M, Battistel D, Roppa S, Daniele S, Perosa A, Enrichi F. Yttrium and lanthanide complexes of β-dialdehydes: synthesis, characterization, luminescence and electrochemistry of coordination compounds with the conjugate base of bromomalonaldehyde. Dalton Trans 2014; 43:9303-12. [PMID: 24819039 DOI: 10.1039/c4dt00644e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel yttrium, europium and terbium coordination compounds having formulae [AsPh4][Ln(BrMA)4] (6LN), Ln(BrMA)3(bipyO2) (7Ln), Ln(NMA)3(phen) (8Ln) and Ln(NMA)3(terpy) (9Ln) (Ln = Y, Eu, Tb; BrMA = conjugate base of bromomalonaldehyde; bipyO2 = 2,2'-bipyridine-N,N'-dioxide; phen = 1,10-phenantroline; terpy = 2,2':6',2''-terpyridine) were synthesized and characterized by using spectroscopic and electrochemical techniques. Uncharged europium and, to a lesser extent, terbium complexes showed appreciable luminescence in the solid state upon excitation with UV light. Polymeric materials and ionic liquids containing BrMA and lanthanides were prepared and photoluminescence measurements were carried out. From an electrochemical point of view, europium(III) BrMA-complexes showed a quasi-reversible one-electron reduction process. The one electron transfer reaction Eu(III) to Eu(II) allowed the photoluminescence tuning of 8Eu deposited on the surface of a glassy carbon electrode.
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Affiliation(s)
- Marco Bortoluzzi
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Dorsoduro 2137, 30123 Venezia, Italy.
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Battistel D, Pecchielan G, Daniele S. Micropipette Contact Technique as a Tool to Reveal, Characterize, and Modify Nanopore Electrodes. ChemElectroChem 2013. [DOI: 10.1002/celc.201300147] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Battistel D, Baldi F, Marchetto D, Gallo M, Daniele S. A rapid electrochemical procedure for the detection of Hg(0) produced by mercuric-reductase: application for monitoring Hg-resistant bacteria activity. Environ Sci Technol 2012; 46:10675-10681. [PMID: 22928857 DOI: 10.1021/es301444a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this work, gold microelectrodes are employed as traps for the detection of volatilized metallic mercury produced by mercuric reductase (MerA) extracted from an Hg-resistant Pseudomonas putida strain FB1. The enzymatic reduction of Hg (II) to Hg (0) was induced by NADPH cofactor added to the samples. The amount of Hg(0) accumulated on the gold microelectrode surface was determined by anodic stripping voltammetry (ASV) after transferring the gold microelectrode in an aqueous solution containing 0.1 M HNO(3) + 1 M KNO(3). Electrochemical measurements were combined with spectrofluorometric assays of NADPH consumption to derive an analytical expression for the detection of a relative MerA activity of different samples with respect to that of P. putida. The method developed here was employed for the rapid determination of MerA produced by bacteria harbored in soft tissues of clams (Ruditapes philippinarum), collected in high Hg polluted sediments of Northern Adriatic Sea in Italy.
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Affiliation(s)
- Dario Battistel
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Cà Foscari Venezia, Calle Larga S. Marta 2137 - 30127 Venice, Italy.
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Battistel D, Daniele S, Fratter D. A scanning electrochemical microscopy procedure for micropatterning Al2O3-thin films deposited on a platinum substrate. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.06.066] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Patten HV, Meadows KE, Hutton LA, Iacobini JG, Battistel D, McKelvey K, Colburn AW, Newton ME, Macpherson JV, Unwin PR. Inside Back Cover: Electrochemical Mapping Reveals Direct Correlation between Heterogeneous Electron-Transfer Kinetics and Local Density of States in Diamond Electrodes (Angew. Chem. Int. Ed. 28/2012). Angew Chem Int Ed Engl 2012. [DOI: 10.1002/anie.201204563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Patten HV, Meadows KE, Hutton LA, Iacobini JG, Battistel D, McKelvey K, Colburn AW, Newton ME, Macpherson JV, Unwin PR. Innenrücktitelbild: Electrochemical Mapping Reveals Direct Correlation between Heterogeneous Electron-Transfer Kinetics and Local Density of States in Diamond ElectrodesZ203057 (Angew. Chem. 28/2012). Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Patten HV, Meadows KE, Hutton LA, Iacobini JG, Battistel D, McKelvey K, Colburn AW, Newton ME, Macpherson JV, Unwin PR. Electrochemical Mapping Reveals Direct Correlation between Heterogeneous Electron-Transfer Kinetics and Local Density of States in Diamond Electrodes. Angew Chem Int Ed Engl 2012; 51:7002-6. [DOI: 10.1002/anie.201203057] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Indexed: 11/05/2022]
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Patten HV, Meadows KE, Hutton LA, Iacobini JG, Battistel D, McKelvey K, Colburn AW, Newton ME, Macpherson JV, Unwin PR. Electrochemical Mapping Reveals Direct Correlation between Heterogeneous Electron-Transfer Kinetics and Local Density of States in Diamond Electrodes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Souto RM, González-García Y, Battistel D, Daniele S. In Situ Scanning Electrochemical Microscopy (SECM) Detection of Metal Dissolution during Zinc Corrosion by Means of Mercury Sphere-Cap Microelectrode Tips. Chemistry 2011; 18:230-6. [DOI: 10.1002/chem.201102325] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Indexed: 11/09/2022]
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Oleinick AI, Battistel D, Daniele S, Svir I, Amatore C. Simple and Clear Evidence for Positive Feedback Limitation by Bipolar Behavior during Scanning Electrochemical Microscopy of Unbiased Conductors. Anal Chem 2011; 83:4887-93. [DOI: 10.1021/ac2006075] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander I. Oleinick
- Département de Chimie, UMR 8640, Ecole Normale Supérieure, 24 Rue Lhomond, F-75231 Paris Cedex 5, France
| | - Dario Battistel
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Cà Foscari Venezia, Calle Larga S Marta, 2137 30123 Venice, Italy
| | - Salvatore Daniele
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Cà Foscari Venezia, Calle Larga S Marta, 2137 30123 Venice, Italy
| | - Irina Svir
- Département de Chimie, UMR 8640, Ecole Normale Supérieure, 24 Rue Lhomond, F-75231 Paris Cedex 5, France
| | - Christian Amatore
- Département de Chimie, UMR 8640, Ecole Normale Supérieure, 24 Rue Lhomond, F-75231 Paris Cedex 5, France
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Salles MO, Battistel D, Lima AS, Bertotti M, Daniele S. Ex Situ Scanning Electrochemical Microscopy (SECM) Investigation of Bismuth- and Bismuth/Lead Alloy Film-Modified Gold Electrodes in Alkaline Medium. ELECTROANAL 2010. [DOI: 10.1002/elan.201000528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Daniele S, Battistel D, Bergamin S, Bragato C. Voltammetric Determination of Glucose at Bismuth-Modified Mesoporous Platinum Microelectrodes. ELECTROANAL 2010. [DOI: 10.1002/elan.200970014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Baldi F, Marchetto D, Battistel D, Daniele S, Faleri C, De Castro C, Lanzetta R. Iron-binding characterization and polysaccharide production by Klebsiella oxytoca strain isolated from mine acid drainage. J Appl Microbiol 2009; 107:1241-50. [PMID: 19508299 PMCID: PMC2810433 DOI: 10.1111/j.1365-2672.2009.04302.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS To investigate Klebsiella oxytoca strain BAS-10 growth on ferric citrate under anaerobic conditions for exopolysaccharide (EPS) production and localization on cell followed by the purification and the EPS determination of the iron-binding stability constant to EPS or biotechnological applications. METHODS AND RESULTS Klebsiella oxytoca ferments ferric citrate under anaerobic conditions and produces a ferric hydrogel, whereas ferrous ions were formed in solution. During growth, cells precipitate and a hydrogel formation was observed: the organic material was constituted of an EPS bound to Fe(III) ions, this was found by chemical analyses of the iron species and transmission electron microscopy of the cell cultures. Iron binding to EPS was studied by cyclic voltammetric measurements, either directly on the hydrogel or in an aqueous solutions containing Fe(III)-citrate and purified Fe(III)-EPS. From the voltammetric data, the stability constant for the Fe(III)-EPS complex can be assumed to have values of approx. 10(12)-10(13). It was estimated that this is higher than for the Fe(III)-citrate complex. CONCLUSIONS The production of Fe(III)-EPS under anaerobic conditions is a strategy for the strain to survive in mine drainages and other acidic conditions. This physiological feature can be used to produce large amounts of valuable Fe(III)-EPS, starting from a low cost substrate such as Fe(III)-citrate. SIGNIFICANT AND IMPACT OF THE STUDY The data herein demonstrates that an interesting metal-binding molecule can be produced as a novel catalyst for a variety of potential applications and the EPS itself is a valuable source for rhamnose purification.
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Affiliation(s)
- F Baldi
- Department of Environmental Science, Cà Foscari University of Venezia, Calle Larga S. Marta, Venezia 30121, Italy.
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Daniele S, Ciani I, Battistel D. Effect of the Insulating Shield Thickness on the Steady-State Diffusion-Limiting Current of Sphere Cap Microelectrodes. Anal Chem 2007; 80:253-9. [DOI: 10.1021/ac701631y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Salvatore Daniele
- Department of Physical Chemistry, University of Venice, Calle Larga, S. Marta, 2137, 30123 Venice, Italy
| | - Ilenia Ciani
- Department of Physical Chemistry, University of Venice, Calle Larga, S. Marta, 2137, 30123 Venice, Italy
| | - Dario Battistel
- Department of Physical Chemistry, University of Venice, Calle Larga, S. Marta, 2137, 30123 Venice, Italy
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Daniele S, Battistel D, Gerbasi R, Benetollo F, Battiston S. Titania-Coated Platinum Thin Films by MOCVD: Electrochemical and Photoelectrochemical Properties. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/cvde.200706599] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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