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Kling NG, Díaz-Tendero S, Obaid R, Disla MR, Xiong H, Sundberg M, Khosravi SD, Davino M, Drach P, Carroll AM, Osipov T, Martín F, Berrah N. Time-resolved molecular dynamics of single and double hydrogen migration in ethanol. Nat Commun 2019; 10:2813. [PMID: 31249306 PMCID: PMC6597707 DOI: 10.1038/s41467-019-10571-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 08/04/2018] [Accepted: 04/30/2019] [Indexed: 11/17/2022] Open
Abstract
Being the lightest, most mobile atom that exists, hydrogen plays an important role in the chemistry of hydrocarbons, proteins and peptides and most biomolecules. Hydrogen can undergo transfer, exchange and migration processes, having considerable impact on the chemical behavior of these molecules. Although much has been learned about reaction dynamics involving one hydrogen atom, less is known about those processes where two or more hydrogen atoms participate. Here we show that single and double hydrogen migrations occurring in ethanol cations and dications take place within a few hundred fs to ps, using a 3D imaging and laser pump-probe technique. For double hydrogen migration, the hydrogens are not correlated, with the second hydrogen migration promoting the breakup of the C-O bond. The probability of double hydrogen migration is quite significant, suggesting that double hydrogen migration plays a more important role than generally assumed. The conclusions are supported by state-of-the-art molecular dynamics calculations.
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Affiliation(s)
- Nora G Kling
- Department of Physics, University of Connecticut, Storrs, CT, 06269, USA.
| | - S Díaz-Tendero
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049, Madrid, Spain.
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049, Madrid, Spain.
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049, Madrid, Spain.
| | - R Obaid
- Department of Physics, University of Connecticut, Storrs, CT, 06269, USA
| | - M R Disla
- Department of Physics, University of Connecticut, Storrs, CT, 06269, USA
| | - H Xiong
- Department of Physics, University of Connecticut, Storrs, CT, 06269, USA
| | - M Sundberg
- Department of Physics, University of Connecticut, Storrs, CT, 06269, USA
| | - S D Khosravi
- Department of Physics, University of Connecticut, Storrs, CT, 06269, USA
| | - M Davino
- Department of Physics, University of Connecticut, Storrs, CT, 06269, USA
| | - P Drach
- Department of Physics, University of Connecticut, Storrs, CT, 06269, USA
| | - A M Carroll
- Department of Physics, University of Connecticut, Storrs, CT, 06269, USA
| | - T Osipov
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - F Martín
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049, Madrid, Spain.
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049, Madrid, Spain.
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nano), Campus de Cantoblanco, 28049, Madrid, Spain.
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018, Donostia-San Sebastián, Spain.
| | - N Berrah
- Department of Physics, University of Connecticut, Storrs, CT, 06269, USA.
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Panno S, Biondo C, Piazza V, Graci S, Alfaro A, Font M, Marchione S, Davino M, Bella P, Davino S. First outbreak of
Pepper vein yellows virus
infecting sweet pepper in Italy. ACTA ACUST UNITED AC 2016. [DOI: 10.5197/j.2044-0588.2016.034.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- S. Panno
- Department of Agriculture and Forest ScienceUniversity of PalermoViale delle Scienze Ed. 590128PalermoItaly
| | - C. Biondo
- Department of Agriculture and Forest ScienceUniversity of PalermoViale delle Scienze Ed. 590128PalermoItaly
| | - V. Piazza
- Department of Agriculture and Forest ScienceUniversity of PalermoViale delle Scienze Ed. 590128PalermoItaly
| | - S. Graci
- Department of Agriculture and Forest ScienceUniversity of PalermoViale delle Scienze Ed. 590128PalermoItaly
- Grupo de VirologíaInstituto Agroforestal MediterráneoUniversitat Politènica de ValènciaCamino de Vera s/n46022ValenciaSpain
| | - A. Alfaro
- Grupo de VirologíaInstituto Agroforestal MediterráneoUniversitat Politènica de ValènciaCamino de Vera s/n46022ValenciaSpain
| | - M.I. Font
- Grupo de VirologíaInstituto Agroforestal MediterráneoUniversitat Politènica de ValènciaCamino de Vera s/n46022ValenciaSpain
| | - S. Marchione
- Osservatorio per le Malattie delle PianteVia Uditore 1590145PalermoItaly
| | - M. Davino
- Department Di3A ‐ University of CataniaVia S. Sofia 10095100CataniaItaly
| | - P. Bella
- Department of Agriculture and Forest ScienceUniversity of PalermoViale delle Scienze Ed. 590128PalermoItaly
| | - S. Davino
- Department of Agriculture and Forest ScienceUniversity of PalermoViale delle Scienze Ed. 590128PalermoItaly
- Institute for Sustainable Plant Protection ‐ National Research Council (IPSP‐CNR)Strada delle Cacce 7310135TorinoItaly
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Panno S, Iacono G, Davino M, Marchione S, Zappardo V, Bella P, Tomassoli L, Accotto G, Davino S. First report of
Tomato leaf curl New Delhi virus
affecting zucchini squash in an important horticultural area of southern Italy. ACTA ACUST UNITED AC 2016. [DOI: 10.5197/j.2044-0588.2016.033.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- S. Panno
- Department Di3A ‐ University of CataniaVia S. Sofia 10095100CataniaItaly
- Euro‐Mediterranean Institute of Science and Technology ‐ IEMESTVia Emerico Amari 12390139PalermoItaly
| | - G. Iacono
- Department Di3A ‐ University of CataniaVia S. Sofia 10095100CataniaItaly
| | - M. Davino
- Department Di3A ‐ University of CataniaVia S. Sofia 10095100CataniaItaly
| | - S. Marchione
- Osservatorio per le Malattie delle PianteVia Uditore 1590145PalermoItaly
| | - V. Zappardo
- Department of Agriculture and Forest ScienceUniversity of PalermoViale delle Scienze Ed. 590128PalermoItaly
| | - P. Bella
- Department of Agriculture and Forest ScienceUniversity of PalermoViale delle Scienze Ed. 590128PalermoItaly
| | - L. Tomassoli
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria – CREACentro di Ricerca per la Patologia VegetaleVia Bertero 2200156RomaItaly
| | - G.P. Accotto
- Institute for Sustainable Plant Protection ‐ National Research Council (IPSP‐CNR)Strada delle Cacce 7310135TorinoItaly
| | - S. Davino
- Department of Agriculture and Forest ScienceUniversity of PalermoViale delle Scienze Ed. 590128PalermoItaly
- Institute for Sustainable Plant Protection ‐ National Research Council (IPSP‐CNR)Strada delle Cacce 7310135TorinoItaly
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Abstract
In 2009 and 2010, approximately 2% of plants had disease symptoms, including initial leaflet chlorosis that later developed into necrotic spots and general necroses along the leaflet. Fruit production on affected plants was substantially reduced and necroses were also present. Total RNA was extracted from five symptomatic plant samples using the RNeasy Plant Mini Kit (Qiagen, Hilden, Germany) and analyzed by reverse transcription (RT)-PCR with specific primer pair: TR2F (5' GAAGGACGAAGAGCGACTG 3'), and TR2R (5' AAGGTAGGTATGCGTTTGC 3') (1). The primers amplified a 575-bp fragment within the coat protein Vp23 of Tomato torrado virus (ToTV). No RT-PCR products were observed when water or asymptomatic tomato plants were used as controls. The RT-PCR products were purified and directly sequenced in both directions. Pair-wise similarity analysis confirmed the presence of ToTV with 99% similarity to isolate PRI-ToTV0301 (GenBank Accession No. DQ388880) and 98% similarity to isolate Kra (Accession No. EU652402). A representative sequence was deposited with GenBank (Accession No. GU903899). To further confirm the presence of ToTV, dsRNA analysis was conducted on all five symptomatic plants and one healthy tomato plant (2). Electrophoresis of dsRNA showed two bands of approximately 5,400 and 7,800 nucleotides long, typical of ToTV in all samples, while a third band between the other two (approximately 6,400 nt) was detected. Serological testing using double-antibody sandwich-ELISA was also conducted on the five symptomatic and 25 additional plants from the same greenhouse that displayed typical Pepino mosaic virus (PepMV) symptoms only. Antibodies used for serological testing screened for the presence of PepMV, Tomato spotted wilt virus, Cucumber mosaic virus, and Tomato mosaic virus (Loewe Biochemica, Sauerlach, Germany). These tests detected PepMV in all samples with disease symptoms typical of PepMV, and in three of the five samples with the newly described symptoms. To our knowledge, this is the first report of ToTV in Italy, and in some plants, co-infection with PepMV was likely. All ToTV-infected tomato plants in the greenhouse were destroyed. References: (1) H. Pospieszny et al. Plant Dis. 91:1364, 2007. (2) J. Sambrook et al. Molecular Cloning. A Laboratory Manual. 2nd ed. Cold Spring Harbor Laboratory Press, Woodbury, NY, 1989.
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Affiliation(s)
- S Davino
- SENFIMIZO, Sez. di Patologia Vegetale e Microbiologia Agraria Università degli Studi di Palermo, Viale delle Scienze edificio 5, 90128 Palermo, Italy, and Istituto Euromediterraneo di Scienza e Technologia, Via E Amari 123, I-90139, Palmero, Italy
| | - L Bivona
- SENFIMIZO, Sez. di Patologia Vegetale e Microbiologia Agraria Università degli Studi di Palermo, Viale delle Scienze edificio 5, 90128 Palermo, Italy
| | - G Iacono
- DISTEF, Sez. di Patologia Vegetale, Università degli Studi di Catania, Via Santa Sofia 100, 95123, Catania, Italy
| | - M Davino
- DISTEF, Sez. di Patologia Vegetale, Università degli Studi di Catania, Via Santa Sofia 100, 95123, Catania, Italy
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Davino S, Davino M, Sambade A, Guardo M, Caruso A. The First Citrus tristeza virus Outbreak Found in a Relevant Citrus Producing Area of Sicily, Italy. Plant Dis 2003; 87:314. [PMID: 30812770 DOI: 10.1094/pdis.2003.87.3.314a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In the course of a survey to select superior old citrus lines in the area of Siracusa (Sicily, Italy), trees in several blocks of Fortune (Citrus reticulata Blanco), Nova (C. reticulata Blanco), Satsuma (C. unshiu (Macfad.) mandarins Marc.), and Marsh grapefruit (C. paradisi Macfad.) propagated on sour orange (C. aurantium L.) rootstock showed stunting, decline, dieback, and small-sized fruits. Stunting was particularly evident in grapefruit. Declined plants consistently showed pin-holing in the cambial face of sour orange bark below the bud union line, which is often associated with Citrus tristeza virus (CTV) infection. Young shoots from 600 Fortune, 300 Nova, 400 Satsuma, and 20 Marsh grapefruit plants showing decline were analyzed by double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) (Loewe Phytodiagnostica Biochemica, Sauerlach, Germany) and by immunoprinting-ELISA (Agritest Srl Valenzano-Bari-Italy) using CTV specific polyclonal antibodies. All decline tree samples reacted positively with both techniques while healthy greenhouse controls were negative. Total RNA was extracted from 50 of those plants, 25 Fortune and 15 Nova mandarins, 5 Satsuma, and 5 Marsh grapefruit (Qiagen RNeasy Plant minikit, Qiagen S.P.A., Milan, Italy), and tested in reverse transcription-polymerase chain reaction (RT-PCR) using specific primers for genes p20 (forward 5'-CGA GCT TAC TTT AGT GTT A-3' from CTV T36 genomic position 17767-17786 and reverse 5'-TAA TGT CAA ACT GAC CGC from CTV T36 position 18269-18286) and p23 (forward 5'-ACT AAC TTT AAT TCG AAC A-3' from CTV T36 position 18347-18286 and reverse 5'-AAC TTA TTC CGT CCA CTT C-3' from CTV T36 position 19026-19044) (2). In all cases, DNA fragments of the expected size were amplified. Equivalent samples from CTV-free greenhouse control plants did not react in ELISA and yielded no DNA after amplification with the same primers. When the history of the plants in the affected blocks was traced, it was found that all Fortune, Nova, satsuma and Marsh grapefruit trees had been propagated from budwood illegally imported from Spain 10 years before, suggesting the possibility that the imported buds were infected with CTV. The estimated number of infected plants in the area of Siracusa is approximately 10,000, and some evidence suggests that the virus might be spreading in the area (work in progress). Only scattered CTV-infected trees had been detected in Italy previously (1). To our knowledge, this is the first report of an important CTV outbreak in Italy. Additional surveys are being conducted to get a more accurate estimation of the CTV incidence, to determine if the virus is being dispersed by aphid vectors, and to biologically and molecularly characterize the virus strains present in the affected area. Presently, there are approximately 100,000 ha of citrus in Sicily, mostly grown on decline susceptible sour orange rootstock. The presence and potential spread of CTV is a major threat for this citrus industry. References: (1) M. Davino and G. Terranova. Frutticoltura 61:18, 1999. (2) A. Sambade et al. Plant Pathol. 51:257, 2002.
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Affiliation(s)
- S Davino
- Dipartimento di Scienze e Tecnologie Fitosanitarie, Universita Degli Studi di Catania, via Valdisavoia 5, 95123 Catania Italy
| | - M Davino
- Dipartimento di Scienze e Tecnologie Fitosanitarie, Universita Degli Studi di Catania, via Valdisavoia 5, 95123 Catania Italy
| | - A Sambade
- Instituto Valenciano de Investigaciones Agrarias (IVIA), Cra. Moncada-Naquera Km. 4,5, 46113 Moncada Valencia Spain
| | - M Guardo
- Istituto Sperimentale per l'Agrumicoltura, Corso Savoia 190, 95024 Acireale Catania Italy
| | - A Caruso
- Istituto Sperimentale per l'Agrumicoltura, Corso Savoia 190, 95024 Acireale Catania Italy
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Abstract
During winter 2000-2001, an unusual disease of tomato was observed in some greenhouses in Sardinia, Sicily, and Apulia, in southern Italy. Plants were chlorotic and reduced in size, expanded leaves showed interveinal yellowing, and older leaves developed interveinal reddish-bronze necrosis and downward rolling. The symptoms resembled those recently reported from Portugal (1) as induced by Tomato chlorosis virus (ToCV) (family Closteroviridae, genus Crinivirus), a whitefly-transmitted virus new to Europe. Symptomatic leaf tissues were extracted and analyzed by reverse transcription-polymerase chain reaction as described by Louro et al.(1). The 439-bp ToCV-specific DNA fragment was amplified in samples collected from 6 of 14 greenhouses in Sardinia, 2 of 5 greenhouses in Sicily, and 1 of 1 greenhouse in Apulia. The sequence of the fragment obtained from a Sicilian isolate (GenBank Accession No. AY048854) showed more than 99% identity to ToCV isolates (Accession Nos. AF024630 and AF234029) from the United States and Portugal, respectively. Infestations of Trialeurodes vaporariorum and Bemisia tabaci have been reported in autumn. To our knowledge, this is the first report of ToCV in Italy. Although we found the virus in three regions of the country, its distribution is likely to be wider, since the symptoms can be mistaken for those of a physiological disorder or of Tomato infectious chlorosis virus, another crinivirus infecting tomato. Reference: (1) Louro et al. Eur. J. Plant Pathol. 106:589, 2000.
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Affiliation(s)
- G P Accotto
- Istituto di Fitovirologia Applicata, CNR, Strada delle Cacce 73, 10135 Torino, Italy
| | - A M Vaira
- Istituto di Fitovirologia Applicata, CNR, Strada delle Cacce 73, 10135 Torino, Italy
| | - M Vecchiati
- Istituto di Fitovirologia Applicata, CNR, Strada delle Cacce 73, 10135 Torino, Italy
| | - M M Finetti Sialer
- Dip. Protezione Piante e Microbiologia Applicata, Università degli Studi, Via Amendola 165/A, 70126 Bari, Italy
| | - D Gallitelli
- Dip. Protezione Piante e Microbiologia Applicata, Università degli Studi, Via Amendola 165/A, 70126 Bari, Italy
| | - M Davino
- Dip. Scienze e Tecnologie Fitosanitarie, Università degli Studi di Catania, Via Valdisavoia 5, 95123 Catania, Italy
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Cacciola SO, Pane A, Davino M, di San Lio GM. First Report of Root Rot Caused by Phytophthora cinnamomi on Avocado in Italy. Plant Dis 1998; 82:1281. [PMID: 30845422 DOI: 10.1094/pdis.1998.82.11.1281c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Root rot caused by Phytophthora cinnamomi Rands is generally recognized to be the most important disease of avocado (Persea americana Miller) wherever this tropical fruit tree is grown (3). The disease was first found in Italy in the spring of 1998. Eight-year-old trees, with symptoms ranging from initial to severe, were observed in an experimental field near Rocca di Caprileone, in Sicily. Few trees showed symptoms of both root rot and collar rot. Infected trees were of 13 commercial cultivars. Trees were grafted on two different rootstocks: Hass seedlings and G6 seedlings. G6 is a selection reported to have some field resistance to P. cinnamomi infections (2). However, no correlation was observed between symptom severity and rootstock. P. cinnamomi was isolated on BNPRAH selective medium (4) from trunk bark, feeder roots, and rhizosphere soil of diseased trees, and from roots of symptomless trees. The isolates, identified primarily on the basis of morphological and cultural characteristics, formed rosaceous colonies on potato dextrose agar (PDA) and on corn meal agar (CMA) coralloid-type mycelium, with abundant hyphal swellings, which were typically spherical and in clusters. Chlamydospores were either terminal or intercalary, and often occurred in characteristic grapelike clusters. Sporangia, which were produced in saline solution (1), were broadly ellipsoidal or ovoid, persistent, non-papillate and proliferous. The identification was confirmed by the electrophoresis of mycelial proteins on polyacrylamide slab gel. The electrophoretic patterns of total soluble proteins and eight isozymes (AKP [alkaline phosphatase], EST [esterase], FUM [fumarase], GLC [NAD-glucose dehydrogenase], G6PD [glucose-6-phosphate dehydrogenase], LDH [lactate dehydrogenase], MDH [malate dehydrogenase], and SOD [superoxide dismutase]) of the isolates from avocado were identical to those of two strains of P. cinnamomi, used as reference (isolate 70473 from International Mycological Institute, U.K., and an isolate from myrtle from the Institute of Plant Pathology, University of Catania, Italy). Conversely, the electrophoretic phenotype of the P. cinnamomi isolates from avocado was clearly distinct from those of reference strains of eight other species included in Waterhouse's taxonomic group VI. Pairings with isolates of a known mating type of P. cinnamomi, P. cryptogea, and P. drechsleri revealed that all the isolates from avocado were A2 mating type. It is possible that P. cinnamomi had been introduced into the experimental field on infected symptomless nursery trees. In Italy, root rot caused by P. cinnamomi could have a significant impact on commercial avocado plantings extending over about 20 ha. Moreover, this polyphagous pathogen may be a threat to other crops as well as to forest trees. References: (1) D. W. Chen and G. A. Zentmyer. Mycologia 62:397, 1970. (2) M. D. Coffey. Plant Dis. 71:1046, 1987. (3) D. C. Erwin and O. K. Ribeiro. 1996. Phytophthora Diseases Worldwide. American Phytopathological Society, St. Paul, MN. (4) H. Masago et al. Phytopathology 67:425, 1977.
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Affiliation(s)
- S O Cacciola
- Istituto di Patologia vegetale, University of Catania, 95123 Catania, Italy
| | - A Pane
- Istituto di Patologia vegetale, University of Catania, 95123 Catania, Italy
| | - M Davino
- Istituto di Patologia vegetale, University of Catania, 95123 Catania, Italy
| | - G Magnano di San Lio
- Dipartimento di Agrochimica ed Agrobiologia, University of Reggio Calabria, 89061 Gallina di Reggio Calabria, Italy
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Davino M. You don't have to care for every patient. RN 1996; 59:63-4, 66-7. [PMID: 8868749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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La. Rosa R, Tessitori M, Albanese G, Catara A, Davino M. Diagnosis of Citrus Exocortis and Hop Stunt-Homologous Citrus Viroids by Oligonucleotide Probes. ACTA ACUST UNITED AC 1993. [DOI: 10.5070/c57c88n530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Davino M, Garnsey SM. Purification, Characterization and Serology of a Mild Strain of Citrus Infectious Variegation Virus from Florida. ACTA ACUST UNITED AC 1984. [DOI: 10.5070/c57jn7405z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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