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Letteratura scientifica selezionata sul tema "Cucumoviruses"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 28 gennaio 2023

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Articoli di riviste sul tema "Cucumoviruses"

1

Haase, Anita, e Frank Rabenstein. "Serotype-specific monoclonal antibodies against two cucumoviruses: (Short communication)". Archives Of Phytopathology And Plant Protection 24, n. 2 (gennaio 1988): 167–69. http://dx.doi.org/10.1080/03235408809437803.

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2

Dietzgen, Ralf G., Ben Callaghan, Colleen M. Higgins, Robert G. Birch, Kunrong Chen e Zeyong Xu. "Differentiation of Peanut Seedborne Potyviruses and Cucumoviruses by RT-PCR". Plant Disease 85, n. 9 (settembre 2001): 989–92. http://dx.doi.org/10.1094/pdis.2001.85.9.989.

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Abstract (sommario):

Seedborne peanut viruses pose important constraints to peanut production and safe movement of germ plasm. They also pose a risk of accidental introduction into previously disease-free regions. We have developed reverse transcription-polymerase chain reaction (RT-PCR) assays based on identical cycling parameters which identified peanut stripe, Peanut mottle, Peanut stunt, and Cucumber mosaic viruses through production of specific DNA fragments of 234 bp, 327 bp, 390 bp, and 133 bp, respectively. Assay sensitivity in the picogram range was achieved. The two potyviruses and two cucumoviruses could be differentiated using duplex RT-PCR assays. These assays should be useful for testing peanut leaves or seeds for virus identification in epidemiological studies, seed testing or in post-entry quarantine.

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3

White, P. Scott, Francisco Morales e Marilyn J. Roossinck. "Interspecific Reassortment of Genomic Segments in the Evolution of Cucumoviruses". Virology 207, n. 1 (febbraio 1995): 334–37. http://dx.doi.org/10.1006/viro.1995.1088.

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4

KAMEYA-IWAKI, Mitsuro, Kimiaki MURAKAMI, Shin-ichi ITO, Kaoru HANADA e Shuhei TANAKA. "Semipersistency of Myzus persicae Transmission of Cucumoviruses Systemically Infecting Leguminous Plants". Journal of General Plant Pathology 66, n. 1 (febbraio 2000): 64–67. http://dx.doi.org/10.1007/pl00012922.

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5

Shi, B. J., R. H. Symons e S. W. Ding. "In vivo expression of an overlapping gene encoded by the cucumoviruses." Journal of General Virology 78, n. 1 (1 gennaio 1997): 237–41. http://dx.doi.org/10.1099/0022-1317-78-1-237.

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6

FUKUMOTO, Fumiyoshi, e Hiroshi TOCHIHARA. "Similarity of the Conditions for Freeze-drying Preservation among Three Cucumoviruses." Japanese Journal of Phytopathology 58, n. 3 (1992): 366–72. http://dx.doi.org/10.3186/jjphytopath.58.366.

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7

Codoñer, Francisco M., e Santiago F. Elena. "The promiscuous evolutionary history of the family Bromoviridae". Journal of General Virology 89, n. 7 (1 luglio 2008): 1739–47. http://dx.doi.org/10.1099/vir.0.2008/000166-0.

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Abstract (sommario):

Recombination and segment reassortment are important contributors to the standing genetic variation of RNA viruses and are often involved in the genesis of new, emerging viruses. This study explored the role played by these two processes in the evolutionary radiation of the plant virus family Bromoviridae. The evolutionary history of this family has been explored previously using standard molecular phylogenetic methods, but incongruences have been found among the trees inferred from different gene sequences. This would not be surprising if RNA exchange was a common event, as it is well known that recombination and reassortment of genomes are poorly described by standard phylogenetic methods. In an attempt to reconcile these discrepancies, this study first explored the extent of segment reassortment and found that it was common at the origin of the bromoviruses and cucumoviruses and at least at the origin of alfalfa mosaic virus, American plum line pattern virus and citrus leaf rugose virus. Secondly, recombination analyses were performed on each of the three genomic RNAs and it was found that recombination was very common in members of the genera Bromovirus, Cucumovirus and Ilarvirus. Several cases of recombination involving species from different genera were also identified. Finally, a phylogenetic network was constructed reflecting these genetic exchanges. The network confirmed the taxonomic status of the different genera within the family, despite the phylogenetic noise introduced by genetic exchange.

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8

Pacios, Luis F., e Fernando García-Arenal. "Comparison of properties of particles of Cucumber mosaic virus and Tomato aspermy virus based on the analysis of molecular surfaces of capsids". Journal of General Virology 87, n. 7 (1 luglio 2006): 2073–83. http://dx.doi.org/10.1099/vir.0.81621-0.

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Abstract (sommario):

The plant RNA viruses Cucumber mosaic virus (CMV) and Tomato aspermy virus (TAV) (genus Cucumovirus) have similar icosahedral particles, the crystal structures of which have been reported recently. Similarity in particle structure agrees with reports of stable capsids assembled from their capsid proteins and of viable recombinant viruses with chimeric capsid proteins derived from CMV and TAV. However, differences between the cucumoviruses have been reported for physicochemical properties. Here, structural and electrostatic features of the molecular surfaces are studied to investigate their relationship with these observations. Two coat-protein recombinants with structures modelled by taking CMV and TAV as templates were also included in the analysis. Results show that there exists an external region of negative electrostatic potential that has arisen from strictly conserved charged residues situated near the external HI loop of the subunits in the capsomers. This negative domain surrounds the fivefold and quasi-sixfold axes and locates above regions of positive potential that extend to cover, nearly homogeneously, the inner surface of capsids, where interaction with encapsidated RNA occurs. Differences between the outer electrostatic distributions in CMV and TAV explain the distinct response of both viruses to variations in physicochemical conditions required for particle stability and are essential to rationalize the biological activity of the coat-protein recombinants, in spite of their seemingly distinct electrostatic characteristics.

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9

Salánki, Katalin, Ákos Gellért, Emese Huppert, Gábor Náray-Szabó e Ervin Balázs. "Compatibility of the movement protein and the coat protein of cucumoviruses is required for cell-to-cell movement". Journal of General Virology 85, n. 4 (1 aprile 2004): 1039–48. http://dx.doi.org/10.1099/vir.0.19687-0.

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Abstract (sommario):

For the cell-to-cell movement of cucumoviruses both the movement protein (MP) and the coat protein (CP) are required. These are not reversibly exchangeable between Cucumber mosaic virus (CMV) and Tomato aspermy virus (TAV). The MP of CMV is able to function with the TAV CP (chimera RT), but TAV MP is unable to promote the cell-to-cell movement in the presence of CMV CP (chimera TR). To gain further insight into the non-infectious nature of the TR recombinant, RNA 3 chimeras were constructed with recombinant MPs and CPs. The chimeric MP and one of the CP recombinants were infectious. The other recombinant CP enabled virus movement only after the introduction of two point mutations (Glu→Lys and Lys→Arg at aa 62 and 65, respectively). The mutations served to correct the CP surface electrostatic potential that was altered by the recombination. The infectivity of the TR virus on different test plants was restored by replacing the sequence encoding the C-terminal 29 aa of the MP with the corresponding sequence of the CMV MP gene or by exchanging the sequence encoding the C-terminal 15 aa of the CP with the same region of TAV. The analysis of the recombinant clones suggests a requirement for compatibility between the C-terminal 29 aa of the MP and the C-terminal two-thirds of the CP for cell-to-cell movement of cucumoviruses.

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10

Gellért, Á., K. Salánki, E. Huppert, G. Náray-Szabó e E. Balázs. "Applied homology modelling in the study of cell-to-cell movement of cucumoviruses". Acta Crystallographica Section A Foundations of Crystallography 60, a1 (26 agosto 2004): s127. http://dx.doi.org/10.1107/s0108767304097508.

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Più fonti

Tesi sul tema "Cucumoviruses"

1

Sackey, Sammy Tawiah. "Interactions of two cucumoviruses". Title page, table of contents and summary only, 1990. http://hdl.handle.net/2440/19167.

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2

Ligat, Julio S. "Pathology and distribution in the host of pea seed-borne mosaic virus". Title page, contents and summary only, 1993. http://web4.library.adelaide.edu.au/theses/09PH/09phl723.pdf.

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Abstract (sommario):

Includes bibliographical references (leaves 82-92). Five isolates of pea seed-borne mosaic virus were compared by host range and symptomatology on 16 pisum sativum cultivars lines, 21 lines of Lathyrus and Lens spp. and several indicator species

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3

Hajimorad, Mohammad Reza. "Variation in alfalfa mosaic virus with special reference to its immunochemical properties". Title page, contents and summary only, 1990. http://web4.library.adelaide.edu.au/theses/09PH/09phh154.pdf.

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Includes Appendix listing other publications by the author. Includes bibliographical references (leaves 134-181). Alfalfa mosaic virus was isolated from lucerne (Medicago sativa) plants with a variety of disease symptoms. Experiments showed that each isolate was biologically distinct and that the host range and symptomatology of each isolate was affected by the environmental condition.

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4

Wahyuni, Wiwiek Sri. "Variation among cucumber mosaic virus (CMV) isolates and their interaction with plants". Title page, contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phw137.pdf.

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Abstract (sommario):

Includes appendix containing journal publications co-authored by the author. Includes bibliographical references (leaves 130-151). Eighteen strains of Cucumber mosaic virus, including forteen from Australia, two from the USA, and two from Japan were used in this study.

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5

Williams, Rhys Harold Verdon George. "Further studies on the structure and function of the cucumber mosaic virus genome : a thesis submitted to the University of Adelaide, South Australia for the degree of Doctor of Philosophy". 1988, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09phw7261.pdf.

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6

Shi, Bu-Jun. "Expression and function of cucumoviral genomes". Title page, contents and summary only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phs5546.pdf.

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Abstract (sommario):

Bibliography: leaves 104-130. The aim of this thesis is to characterise subgenomic RNAs of cucumoviruses and the functions of their encoding genes. Strains of cucumber mosaic virus (CMV) are classified into two major subgroups (I and II) on the basis of nucleotide sequence homology. The V strain of tomato aspermy virus (V-TAV) and a subgroup I CMV strain (WAII) are chosen to determine whether the 2b genes encoded by these viruses are expressed 'in vivo'. For further investigation of the 2b gene function, cDNA clones of three genomic RNAs of V-TAV are constructed. Using the infectious cDNA clones of V-TAV, a mutant virus containing only one of the two repeats is constructed.

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7

Geering, Andrew D. W. "The epidemiology of cucumber mosaic virus in narrow-leafed lupins (Lupinus angustifolius) in South Australia". Title page, table of contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phg298.pdf.

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8

Wispelaere, Mélissanne de. "Etude de la recombinaison chez les Cucumovirus". Paris 11, 2004. http://www.theses.fr/2004PA112270.

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La recombinaison entre génomes viraux est un processus qui participe à la conservation et l’évolution du génome viral. L’objet du travail présenté dans cette thèse était de détecter l’apparition de molécules recombinantes entre deux cucumovirus, le virus de la mosaïque du concombre (CMV) et le virus de l’aspermie de la tomate (TAV). Au cours d’une coinfection sur des plants de tabac, nous avons pu identifier par RT-PCR des molécules recombinantes dans la région 3’ non codante de l’ARN 3 de ces virus. L’observation des différents sites de recombinaison nous a permis d’identifier deux points chauds de recombinaison. L’un d’eux était situé au niveau du promoteur de synthèse du brin négatif, dans une région qui a souvent été impliquée dans la recombinaison. Le second était situé dans une région impliquée dans la génération de l’ARN 5 subgénomique. Il a été proposé que l’ARN 5 soit généré par une reconnaissance d’un promoteur subgénomique putatif. Il était ensuite intéressant de savoir si l’apparition de molécules recombinantes pouvait avoir un impact sur le développement de l’infection virale. Cette question a été adressée par l’étude des propriétés biologiques de virus possédant un ARN 3 recombiné. Lorsque les virus recombinants ont été inoculés seuls sur les deux plantes hôtes utilisées, le tabac et l’arabette, aucun symptome particulier n’a été développé. Il était intéressant de constater que ces virus avaient été générés de façon détectable au cours d’une coinfection, et qu’ils étaient capables d’infecter de façon efficace les hôtes testés. Leur impact au niveau de la population virale pourrait acquérir une importance dans le cas d’infection sur d’autres plantes hôtes
Recombination between viruses contributes to genome conservation and evolution. The goal of this thesis subject was to detect RNA 3 recombinant molecules between two cucumoviruses, the cucumber mosaic virus (CMV) and the tomato aspermy virus (TAV). Recombinant molecules have been detected by RT-PCR in tobacco plants coinfected with these two viruses. The recombination sites were localised within the 3’ non coding region of RNA 3. We identified two hot spots for recombination. One of them was located in the tRNA like structure, that is part of the promoter for minus strand synthesis. The other hot spot was located in the region leading to RNA 5 production. This region has been proposed to act as a promoter for RNA 5 synthesis. We then wondered if the recombinant molecules could have an influence on the viral infection. To adress this question, we studied the biological properties of viruses possessing a recombinant RNA 3. When we inoculated tobacco and Arabidopsis thaliana with these viruses, we saw no major differences in the development of symptoms. This suggests that these viruses have been generated in an efficient manner during coinfection and they were able to infect plants. Their impact on viral population could be important in other environemental conditions or during infection of other host plants

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9

Chen, Baoshan. "Encapsidation of nucleic acids by cucumovirus coat proteins /". Title page, contents and summary only, 1991. http://web4.library.adelaide.edu.au/theses/09PH/09phc5183.pdf.

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10

PORTA, CLAUDINE. "Utilisation d'anticorps monoclonaux pour l'etude des cucumovirus, des tobamovirus et des comovirus". Université Louis Pasteur (Strasbourg) (1971-2008), 1989. http://www.theses.fr/1989STR13157.

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Abstract (sommario):

Production d'anticorps monoclonaux diriges contre des virus de plantes pour le diagnostic d'infections virales et pour l'etude des determinants antigeniques des capsides virales. Mise au point d'un test de detection pour le virus de la mosaique du concombre, le virus des taches annulaires de l'odontoglossum et le virus de la mosaique de la tomate. Cartographie de epitopes du virus de la mosaique du tabac

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Capitoli di libri sul tema "Cucumoviruses"

1

Raj, S. K., S. Kumar, K. K. Gautam, C. Kaur, A. Samad, M. Zaim, V. Hallan e R. Singh. "The Progress of Research on Cucumoviruses in India". In A Century of Plant Virology in India, 217–53. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-5672-7_9.

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2

Garcia-Arenal Rodriguez, Fernando, e Aurora Fraile. "Cucumovirus". In The Springer Index of Viruses, 179–85. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-0-387-95919-1_26.

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3

Roossinck, Marilyn J., e P. Scott White. "Cucumovirus Isolation and RNA Extraction". In Plant Virology Protocols, 189–96. Totowa, NJ: Humana Press, 1998. http://dx.doi.org/10.1385/0-89603-385-6:189.

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4

Jacquemond, Mireille, Katalin Salánki, Isabelle Carrère, Ervin Balázs e Mark Tepfer. "Behavior of Cucumovirus Pseudorecombinant and Recombinant Strains in Solanaceous Hosts". In Virus-Resistant Transgenic Plants: Potential Ecological Impact, 52–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-662-03506-1_7.

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5

García-Arenal, Fernando, José Luis Alonso-Prados, Miguel A. Aranda, José M. Malpica e Aurora Fraile. "Mixed Infections and Genetic Exchange Occur in Natural Populations of Cucumber Mosaic Cucumovirus". In Virus-Resistant Transgenic Plants: Potential Ecological Impact, 94–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-662-03506-1_11.

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6

Kumari, Aarti, Charanjeet Kaur, Susheel Kumar, Puneet Singh Chauhan e Shri Krishna Raj. "Current Status of Three Virus Genera (Badnavirus, Cucumovirus, and Potyvirus) in Canna Species in India". In Virus Diseases of Ornamental Plants, 117–26. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3919-7_6.

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7

Gallitelli, Donato, Francesco Grieco e Fabrizio Cillo. "The Potential of a Beneficial Satellite RNA of Cucumber Mosaic Cucumovirus to Acquire Deleterious Functions : Nature Versus Greenhouses". In Virus-Resistant Transgenic Plants: Potential Ecological Impact, 100–106. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-662-03506-1_12.

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8

Perry, Keith L. "Cucumoviruses". In Virus-Insect-Plant Interactions, 167–80. Elsevier, 2001. http://dx.doi.org/10.1016/b978-012327681-0/50012-1.

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9

Edwardson, John R., e R. G. Christie. "Cucumoviruses". In CRC Handbook of Viruses Infecting Legumes, 293–320. CRC Press, 2018. http://dx.doi.org/10.1201/9781351071192-16.

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10

Palukaitis, Peter, e Fernando García-Arenal. "Cucumoviruses". In Advances in Virus Research, 241–323. Elsevier, 2003. http://dx.doi.org/10.1016/s0065-3527(03)62005-1.

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Rapporti di organizzazioni sul tema "Cucumoviruses"

1

Palukaitis, Peter, Amit Gal-On, Milton Zaitlin e Victor Gaba. Virus Synergy in Transgenic Plants. United States Department of Agriculture, marzo 2000. http://dx.doi.org/10.32747/2000.7573074.bard.

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Abstract (sommario):

Transgenic plants expressing viral genes offer novel means of engendering resistance to those viruses. However, some viruses interact synergistically with other viruses and it is now known that transgenic plants expressing particular genes of one virus may also mediate synergy with a second virus. Thus, our specific objectives were to (1) determine if transgenic plants resistant to one virus showed synergy with another virus; (2) determine what viral sequences were essential for synergy; and (3) determine whether one of more mechanisms were involved i synergy. This project would also enable an evaluation of the risks of synergism associated with the use of such transgenic plants. The conclusion deriving from this project are as follows: - There is more than one mechanism of synergy. - The CMV 2b gene is required for synergistic interactions. - Synergy between a potyvirus and CMV can break natural resistance limiting CMV movement. - Synergy operates at two levels - increase in virus accumulation and increase in pathology - independently of each other. - Various sequences of CMV can interact with the host to alter pathogenicity and affect virus accumulation. - The effect of synergy on CMV satellite RNA accumulatio varies in different systems. - The HC-Pro gene may only function in host plant species to induce synergy. - The HC-Pro is a host range determinant of potyviruses. - Transgenic plants expressing some viral sequences showed synergy with one or more viruses. Transgenic plants expressing CMV RNA 1, PVY NIb and the TMV 30K gene all showed synergy with at least one unrelated virus. - Transgenic plants expressing some viral sequences showed interference with the infection of unrelated viruses. Transgenic plants expressing the TMV 30K, 54K and 126K genes, the PVY NIb gene, or the CMV 3a gene all showed some level of interference with the accumulation (and in some cases the pathology) of unrelated viruses. From our observations, there are agricultural implications to the above conclusions. It is apparent that before they are released commercially, transgenic plants expressing viral sequences for resistance to one virus need to be evaluated fro two properties: - Synergism to unrelated viruses that infect the same plant. Most of these evaluations can be made in the greenhouse, and many can be predicted from the known literature of viruses known to interact with each other. In other cases, where transgenic plants are being generated from new plant species, the main corresponding viruses from the same known interacting genera (e.g., potexviruses and cucumoviruses, potyviruses and cucumoviruses, tobamoviruses and potexviruses, etc.) should be evaluated. - Inhibition or enhancement of other resistance genes. Although it is unlikely that plants to be released would be transformed with HC-Pro or 2b genes, there may be other viral genes that can affect the expression of plant genes encoding resistance to other pathogens. Therefore, transgenic plants expressing viral genes to engender pathogen-derived resistance should be evaluated against a spectrum of other pathogens, to determine whether those resistance activities are still present, have been lost, or have been enhanced!

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