Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"Cucumber mosaic virus"”.
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Effects of Cucumber Mosaic Virus on Plant-Pollinator Relationships
… volatile organic chemicals (VOCs). Infection by viruses alter plant volatile signatures and consequently affect how insects interact with plants. In previous flight arena experiments in the Carr lab, cucumber mosaic virus (CMV) was shown to cause plants to emit volatile chemicals that attract …
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Interactions between Cucumber mosaic virus proteins and host proteins
Cucumber mosaic virus (CMV) infects over a thousand plant species including many crops. CMV is mainly transmitted between plants by aphids, insects with probing mouthparts that introduce virus particles directly into host cells. The 2b viral suppressor of RNA silencing (VSR) encoded by CMV is a …
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Identification and characterisation of South African strains of cucumber mosaic virus
This project was then aimed at finding naturally occurring isolates of CMV, characterising them, producing much needed antisera and to use such antisera in a comparison with other well characterised strains by the use of new contemporary sensitive serological techniques.
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Mixed infections of maize dwarf mosaic virus and cucumber mosaic virus in maize
… found to be doubly infected with maize dwarf mosaic (MDMV) and cucumber mosaic virus (CMV). A mixed infection of these two viruses could be maintained in maize plants grown under laboratory conditions. The possibility of synergism or of an interference mechanism between MDMV and CMV in dual …
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The development of transgenic plants resistant to cucumber mosaic virus and tobacco necrosis virus
Cucumber mosaic virus (CMV) and tobacco necrosis virus (TN V) often occur in mixed virus infections in South Africa. Both viruses are of economic importance because of their world-wide distribution, extensive host range and their effects on yields of agriculturally important crop plants. The …
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The relationship of peanut stunt virus to cucumber mosaic virus and aspermy viruses of tomato and chrysanthemum
Host range and symptomatology of peanut stunt virus (PSV), cucumber mosaic virus (CMV), the Blencowe isolate of tomato aspermy virus (TAV-B) and a chrysanthemum virus (CV-L) varies on selected hosts. In sucrose density-gradient centrifugation each virus has a sedimentation rate of approximately …
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The interactions of the cucumber mosaic virus 2b protein with the viral 1a and host Argonaute 1 proteins
The cucumber mosaic virus (CMV) 2b multifunctional protein is a suppressor of plant defences and an important determinant of viral pathogenesis. The effect of the 2b protein on symptom induction is due in large part to its physical interaction with the host RNA silencing factor Argonaute 1 (AGO1). …
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Plant Virus Diagnostics: Comparison of classical and membrane-based techniques for immunoassay and coat protein sequence characterization for Cucumber mosaic virus and three potyviruses
… of pest management strategies. The virus diagnostic capabilities of several plant pathology collaborators within the Integrated Pest Management Collaborative Research Support Program (IPM CRSP) host countries were evaluated with the aid of a survey. Very few plant disease diagnostic …
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TRACKING PLANT VIRUS INFECTIONS THROUGH MULTIPLE DIMENSIONS: A SEARCH FOR SOURCES OF NONPERSISTENT VIRUS VECTORS AND RESERVOIRS AT LOCAL AND REGIONAL SCALES
… explores the ecology of aphid-vectored viruses in Midwestern cucurbits; in particular, it focuses on identifying source populations of vectors and virus reservoirs within fields and interactions of vector aphids with land cover surrounding and within fields. Initially, I identified the …
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Viruses implicated in the woodiness disease of South African passionfruit, and the molecular characterization of a new potyvirus
Woodiness disease caused by virus infection is the most serious virus disease of passionfruit and affects economic production of this crop worldwide. A preliminary survey of diseased Passiflora material collected from various regions in South Africa revealed the presence of at least three different …
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An investigation into the high level production of proteins in tobacco using transgenic plants or viral vectors
… level plant expression vector from the RNA 3 of cucumber mosaic virus strain Y (CMV Y). The 5'- and 3'-untranslated regions (UTRs) of this genome segment were reverse transcribed, cloned and sequenced. The chloramphenicol acetyl transferase gene (CAT) was inserted between the two UTRs. This …
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Characterization of an Amphipathic Alpha-Helix in the Membrane Targeting and Viral Genome Replication of Brome Mosaic Virus
Positive-strand RNA viruses associate with specific organelle membranes of host cells to establish viral replication complexes. The replication protein 1a of brome mosaic virus associates strongly with the nuclear endoplasmic reticulum (ER) membranes, invaginates membranes into the lumen, and …
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Studio dei meccanismi molecolari coinvolti nel determinismo sintomatologico di piante infette da virus e virus-satelliti
… appearance of plants inoculated either with a virus or with a virus-satellite complex. In the first case, we tried to set up a reliable method for an early identification of PVYNTN strains present in Italy and causing potato tuber necrosis. This, to prevent their spread in the field and to …
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Incidence, Distribution and Characteristics of Major Tomato Leaf Curl and Mosaic Virus Diseases in Uganda
… ribonucleic and deoxyribonucleic acid tomato viruses. Genetic identity for one main virus disease was investigated. Serological and molecular techniques, i.e. DAS-ELISA (Clerk and Adams, 1977), TAS-ELISA (Macintosh et al., 1992), DNA hybridization (Czosnek et al., 1988), and PCR (Navot et al., …
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Virus elimination from Actinidia germplasm
… crop to New Zealand. Since 2003 several viruses have been isolated from Actinidia germplasm. Because the germplasm is difficult to replace it is vital that viruses are eliminated from the infected material. The anti-viral effect of thermotherapy and chemotherapy was tested on a selection …
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The epidemiology and management of fungal- and nonpersistent aphid-borne plant viruses in a Mediterranean type climate
… for various non-persistently aphid-borne viruses of grain legumes, celery and carrots and for the fungally-transmitted lettuce big vein disease (LBVD). In a range of legumes, extreme resistance to Alfalfa mosaic virus (AMV) was found in Vicia faba cv. Ascot, Hedysarum coronarium cv. …
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Disrupting insect-mediated transmission of plant viruses
Many plant viruses are vectored by aphids in the non-persistent mode, in which virus particles are transported on these insects’ specialised piercing mouthparts (stylets). Virus infection can change plant-vector interactions and it is thought that this may accelerate virus transmission. To better …
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Studies of Resistance to Aphids and Viruses in Arabidopsis thaliana and Capsicum annuum
Cucumber mosaic virus (CMV) causes significant losses in crop production. In this study, methods to enhance plant resistance to CMV infection and infestation by Myzus persicae, a vector that transmits CMV, were assessed. There were two parts to the project. In the first, the feasibility of using …
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Persistent viruses in Capsicum annuum plants: Understanding the mystery guests
Most work on plant viruses focuses on their pathogenicity, but recent studies suggest viruses may benefit their hosts, at least under some conditions. Plant-infecting viruses of the Partitiviridae and Endornaviridae are transmitted only vertically, via pollen and seed, generally cause no disease …
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Effects of plant viral pathogens on plant-pollinator relationships
… of a ‘payback’ hypothesis that postulates that virus infection triggers changes in host plants that render them more attractive to pollinators. This builds on previous work, which showed that in tomato Cucumber mosaic virus (CMV) infection enhanced emission of volatile organic compounds (VOCs) …
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