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Dissertations / Theses on the topic 'Plant viruses'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Chare, Elizabeth R. "Recombination in RNA viruses and plant virus evolution." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433381.

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2

Mcmenemy, Lindsay Sara. "Raspberry viruses manipulate plant–aphid interactions." Thesis, University of Sussex, 2011. http://sro.sussex.ac.uk/id/eprint/7465/.

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Plants come under attack by a variety of organisms, including insects and pathogenic microorganisms such as viruses. Plant viruses can interact indirectly with their vectors by inducing changes to plant chemistry which may alter its attractiveness as a host for herbivore vectors. Using red raspberry as a study system, this study aimed to investigate the host plant mediated interactions occurring between the large raspberry aphid, Amphorophora idaei, and two of the viruses that it transmits, Black raspberry necrosis virus (BRNV) and Raspberry leaf mottle virus (RLMV). In whole plant bioassays,

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3

Groen, Simon Cornelis. "Manipulation of plant-insect interactions by insect-borne plant viruses." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648187.

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4

Jeffries, Alex Craig. "The study at the molecular level of the New Zealand isolate of Lucerne transient streak sobemovirus and its satellite RNA." Title page, contents and summary only, 1993. http://web4.library.adelaide.edu.au/theses/09PH/09phj47.pdf.

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5

Segwagwe, Amogelang Thethe. "Characterization of a tymovirus causing disease in diascia ornamental plants." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Dissertations/Spring2007/A%5FSegwagwe%5F032007.pdf.

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6

Afsharifar, Alireza. "Characterisation of minor RNAs associated with plants infected with cucumber mosaic virus." Title page, table of contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09pha2584.pdf.

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Bibliography: leaves 127-138. This thesis studies the minor double stranded RNAs (dsRNA) and single stranded RNAs (ssRNA) which are consistently associated with plants infected with Q strain of cucumber mosaic virus (Q-CMV). The investigations are focused on the structural elucidation of new RNAs which have been observed in single stranded and double stranded RNA profiles of Q strain of CMV.

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7

Keese, Paul Konrad. "Structures of viroids and virusoids and their functional significance." Title page, contents and summary only, 1986. http://web4.library.adelaide.edu.au/theses/09PH/09phk268.pdf.

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8

Fu, S. F. "Salicylic acid induced resistance to plant viruses." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599252.

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Mitochondrial alternative oxidase (AOX) plays a role in protecting plant cells against reactive oxygen species. The SA-inducible RNA-directed RNA polymerase 1 (RDR1), contributes to viral RNA degradation via RNA interference. Previous data suggested that these enzymes comprise separately regulated, redundant elements in SA-induced resistance to viruses. To test this hypothesis, I constructed transgenic tobacco<i> (Nicotiana tabacum) </i>and <i>N. benthamiana </i>plants compromised simultaneously in AOX function and RDR1 activity. Transgenic tobacco and <i>N. benthamiana </i>plants were charact

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9

Aw, D. W. J. "Analysis of methods for screening plant viruses." Thesis, University of Glasgow, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328786.

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10

Bonfiglioli, Roderick. "Studies on the ultrastructural localisation of viroids and other plant pathogens." Title page, contents and summary only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phb713.pdf.

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Bibliography: leaves 78-90. Designed to localize viroids at the histological and subcellular level and to determine with which cellular compartments the different viroids are associated. The majority of the work, in both the viroid and the phytoplasma studies involved the development of different methods and techniques.

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11

Nagano, Hideaki. "Studies on Plant-Virus Cell-to-Cell Movement Using Chimeric Viruses." Kyoto University, 2000. http://hdl.handle.net/2433/78105.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第8438号<br>農博第1122号<br>新制||農||801(附属図書館)<br>学位論文||H12||N3395(農学部図書室)<br>UT51-2000-F342<br>京都大学大学院農学研究科農林生物学専攻<br>(主査)教授古澤巌, 教授泉井桂, 教授津田盛也<br>学位規則第4条第1項該当

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12

Chingandu, Nomatter, and Nomatter Chingandu. "Genomic Characterization of the Cacao Swollen Shoot Virus Complex and other Theobroma Cacao-Infecting Badnaviruses." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/621859.

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The cacao swollen shoot disease of Theobroma cacao L. (cacao) is caused by Cacao swollen shoot virus (CSSV; genus, Badnavirus, family, Caulimoviridae). The virus is endemic to West Africa, where it poses a serious threat to cocoa production. Despite efforts to control CSSV spread by replacement of infected trees with tolerant cultivars and mealybug vector management, the disease is widespread in West Africa. In Trinidad, leaf mosaic and vein-banding symptoms have been observed in cacao plants in the field since the 1940s, and recently at the International Cocoa Genebank (ICGT), a custodian of

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13

Kallender, Howard. "Characterisation and molecular biology of two plant viruses." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46375.

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14

Perkins, Colin J. "A study of some viruses and virus-like agents infecting woody ornamentals." Thesis, University of Bath, 1987. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376333.

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15

Ali, Akhtar. "Pathology and molecular comparison of a range of pea seed-borne mosaic virus isolates." Title page, contents and summary only, 1999. http://web4.library.adelaide.edu.au/theses/09ACP/09acpa398.pdf.

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Copies of author's previously published articles inserted. Bibliography: leaves 128-143. This thesis describes the development of serological and nucleic acid based diagnostic methods for pea-seed borne mosaic virus (PSbMV), the isolation of specific effects on infected pea plants, the collection and biological comparison of new PSbMV isolates from Pakistan, the cloning and sequencing of specific parts of the genome of selected isolates, nucleotide and amino acid sequence comparisons between selected isolates, and the development of a ribonuclease protection assay (RPA) for identifying genomic

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16

Haley, Ann. "Characterisation of the movement proteins of two plant viruses." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308317.

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17

Naylor, Martin. "The effects of salicylic acid on RNA plant viruses." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624519.

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18

Murray, Rose Rebecca. "Investigating the interactions between plant viruses and host stomata." Thesis, University of Bristol, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.686167.

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Stomata are microscopic pores located in the epidermis of most terrestrial plants. As well as serving as gateways for gas exchange and transpiration, stomata have recently become known to have increasingly complex relationships with pathogens, with many pathogens utilising stomata as entry portals. However, the research so far has largely focussed on bacterial and fungal pathogens, leaving a gap in the knowledge about the interactions between plant viruses and stomata. This study aims to investigate the interactions and relations between stomata and viruses by investigating potential for stoma

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19

Luo, Hao. "Using new tools to detect and characterise plant viruses." Thesis, Luo, Hao (2012) Using new tools to detect and characterise plant viruses. PhD thesis, Murdoch University, 2012. https://researchrepository.murdoch.edu.au/id/eprint/12381/.

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Executive summary: The overall aim of this study was to develop new methods to detect and characterise plant viruses. Generic methods for detection of virus proteins and nucleic acids were developed to detect two plant viruses, Pelargonium zonate spot virus (PZSV) and Cycas necrotic stunt virus (CNSV), neither of which were previously detected in Australia. Two new approaches, peptide mass fingerprinting (PMF) and next-generation nucleotide sequencing (NGS) were developed to detect novel or unexpected viruses without the need for previous knowledge of virus sequence or study. In this work, P

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20

Sheldon, Candice Claire. "Hammerhead mediated self-cleavage of plant pathogenic RNAs /." Title page, contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phs544.pdf.

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21

Zambrano, Mendoza Jose Luis. "Genetic Architecture of Resistance to Phylogenetically Diverse Viruses in Maize." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1373285155.

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22

Brigneti, Gianinna. "Molecular and genetical analysis of the Ry-mediated resistance to potato virus Y in potato." Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389221.

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23

Yu, Weichang. "CAMV gene VI protein : a virulence factor and the host responses in Arabidopsis /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3075411.

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24

Torok, Valeria Anna. "Biological and molecular variation among isolates of pea seed borne mosaic virus." Title page, contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09pht686.pdf.

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Corrigendum inserted at the back. Includes bibliographical references (leaves 133-158). Ch. 1. General introduction -- ch. 2. General materials and methods -- ch. 3. Biological characterisation of Australian PSbMV isolates -- ch. 4. Developing nucleic acid based diagnostics for PSbMV -- ch. 5. Detection of PSbMV isolates by RT-PCR and RFLP analysis -- ch. 6. Developing an internal control for PSbMV RT-PCR -- ch. 7. Molecular analysis of the PSbMV VPG -- ch. 8. PSbMV sequence and phylogenetic analysis -- ch. 9. General discussion Sixteen pea seed borne mosaic virus (PSbMV) isolates were collect

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25

Rohozinski, J. "Studies of velvet tobacco mottle virus RNA replication by enzyme-template complexes in extracts from infected leaves /." Title page, contents and summary only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phr738.pdf.

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26

Liu, Yuan Yi. "A study of a satellite RNA from arabis mosaic nepovirus." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335830.

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27

Meehan, Brian Martin. "Inter-relationships of members of the carlavirus group." Thesis, Queen's University Belfast, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335598.

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28

Clark, Anthony James. "Production and characterisation of hybrid comoviruses." Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267319.

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29

Taylor, Kathryn. "Structure-based refinement of peptide presentation on the surface of cowpea mosiac virus." Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389325.

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30

Lucy, Andrew P. "Pathways to systemic invasion of plants by maize streak and other viruses." Thesis, University of East Anglia, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338088.

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31

Zhang, Shulu. "Molecular biology studies on rice tungro spherical virus with emphasis on the coat protein genes." Thesis, University of East Anglia, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358309.

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32

Wang, Daowen. "A study of the genetic and structural basis of pea seed-borne mosaic virus seed transmission in pea." Thesis, University of East Anglia, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357245.

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33

Perbal, Marie-Christine. "A functional analysis of the cauliflower mosaic virus movement protein." Thesis, University of East Anglia, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359335.

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34

Massumi, Hossain. "Investigation into the mechanism of virus transmission in a non-persistent manner without helper factors." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299070.

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35

Powell, Glen. "Stylet activities and potyvirus transmission by aphids." Thesis, King's College London (University of London), 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283709.

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36

Mackenzie, Susan. "Reciprocal transplantations to study local specialisation and the measurement of components of fitness." Thesis, Bangor University, 1985. https://research.bangor.ac.uk/portal/en/theses/reciprocal-transplantations-to-study-local-specialisation-and-the-measurement-of-components-of-fitness(6227a52b-adc9-4a40-9404-b8978b480027).html.

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Reciprocal transplant experiments have been made to investigate the .intra-specific variation in two clonal species, Primula vulgaris and RBDUDculus repens. Primula transplants performed best when returned to their native populations, indicating that they were differentia~ed in response to local conditions. There was marked variation in the degree of local specialisation of plants in different primrose populations and possible causes of this variation are discussed. Although buttercup transplants also showed great variability, there was no evidence that they were specialised, either between, o

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37

Hodge, Brian Allen. "Occurrence, Diversity, and Impact of Viruses in Ohio." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1606307407425512.

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38

Chauhan, Ramola. "A study of filamentous viruses in maize and smallgrains." Master's thesis, University of Cape Town, 1985. http://hdl.handle.net/11427/22013.

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Bibliography: pages 175-184.<br>The occurrence of maize dwarf mosaic virus (MDMV) in field grown maize was investigated. For this purpose, maize showing mosiac symptoms was collected from different maize growing areas in South Africa by Prof. M.B. von Wechmar. These samples from Transvaal, Orange Free State and Natal were then investigated for the presence of MDMV and possible strains of this virus. Three virus isolates were purified and partially characterised. These isolates were serologically compared together with a fourth isolate SCMV 4975, obtained from the U.S., to establish strain rela

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39

Wasswa, Peter. "Sweet potato viruses in Uganda : identification of a new virus, a mild strain of an old virus and reversion." Thesis, University of Greenwich, 2012. http://gala.gre.ac.uk/9091/.

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In 2009, a sweet potato begomovirus (sweepovirus) was detected for the first time in Uganda. An isolate was sequenced, providing the first full sequence of a sweepovirus from mainland Africa which differed from other sweepoviruses by at least 13%, discriminating this isolate as a new species, ‘Sweet potato leaf curl Uganda virus’ (SPLCUV). SPLCUV was quite common in cultivars (cvs) Ejumula, New Kawogo and 318L having uneven distribution in infected plants and reversion to healthy occurred, especially in cv New Kawogo. SPLCUV was observed not to be synergised by Sweet potato chlorotic stunt vir

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40

Maree, H. J. (Hans Jacob). "The expression of Dianthin 30, a ribosome inactivating protein." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53633.

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Thesis (MSc)--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: Ribosome inactivating proteins (RIPs) are currently classified as rRNA N-glycosidases, but also have polynucleotide: adenosine glycosidase activity. RIPs are believed to have anti-viral and anti-fungal properties, but the exact mechanism of these proteins still need to be elucidated.The mechanism of resistance however, appears to be independent of the pathogen. For resistance the RIP terminates virus infected plant cells and stops the reproduction and spread of the virus. Transgenic plants containing RIPs should thus be re

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41

com, cwebster82@gmail, and Craig Graham Webster. "Characterisation of Hardenbergia mosaic virus and development of microarrays for detecting viruses in plants." Murdoch University, 2008. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20081021.103144.

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A virus causing chlorosis and leaf distortion in the Western Australian endemic legume Hardenbergia comptoniana was detected by biological indexing to Chenopodium quinoa and Nicotiana benthamiana. Enzyme linked immuno-sorbent assay (ELISA) using general Potyvirus antiserum and amplification by reverse transcription polymerase chain reaction (RT-PCR) with degenerate primers indicated that it was a species of Potyvirus. It was confirmed as an unknown member of the genus Potyvirus by comparing its coat protein sequence with those of other potyviruses. The name Hardenbergia mosaic virus (HarMV)

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42

Liu, Zun Kearney Christopher Michel. "New viral vectors for the expression of antigens and antibodies in plants." Waco, Tex. : Baylor University, 2009. http://hdl.handle.net/2104/5341.

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43

Bendahmane, Abdelhafid. "Analysis of a gene-for-gene interaction associated with Rx-mediated resistance to potato virus X." Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389350.

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44

Williams, Iain S. "Aphid plant interactions and the epidemiology of sugar beet yellowing viruses." Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389388.

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45

Kekarainen, Tuija. "Enhanced utilisation of an infectious plant viral cDNA clone /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-5781-5.pdf.

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46

Sadeq, Al-Kuwaiti Nawres A. "Molecular characterization of viruses infecting potato and vegetables in Iraq." Thesis, University of Greenwich, 2013. http://gala.gre.ac.uk/11375/.

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Due to the lack of published molecular information concerning plant viruses from Iraq, this study was initiated to investigate the diversity of viruses infecting potato and vegetables in Iraq on a molecular basis. Based on the economic importance and incidence worldwide, eight virus genera were investigated in 175 potato and vegetable samples collected from fields in Baghdad, Anbar and Najaf provinces in Iraq. Using genus/family specific primers, published in the literature, polymerase chain reaction (PCR) and reverse transcription-polymerase chain reaction (RT-PCR) were performed to screen sa

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47

Bustamante-Gallardo, Pedro. "Molecular studies on Rice hoja blanca virus (RHBV)." Thesis, University of East Anglia, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338096.

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48

Hamdollah-Zadeh, Akram. "Transgenic resistance to pollen transmission of tobacco ringspot virus." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364912.

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49

Chewachong, Godwill Mih. "Engineering Plant Virus " Vaccines" Using Pepino mosaic virus as a Model." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1384203201.

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50

Linnik, Volha. "Functional analysis of a plant virus replication 'factory' using live cell imaging." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4639.

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Plant viruses have developed a number of strategies that enable them to become obligate intracellular parasites of many agricultural crops. Potato virus X (PVX) belongs to a group of positive-sense, single-stranded plant RNA viruses that replicate on host membranes and form elaborate structures known as viral replication complexes (VRCs) that contain viral RNA (vRNA), proteins and host cellular components. VRCs are the principal sites of viral genome replication, virion assembly and packaging of vRNA for export into neighbouring cells. For many animal viruses, host membrane association is cruc

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