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Sequence analysis and variability study of Lettuce necrotic yellows virus /Callaghan, Ben. January 2005 (has links) (PDF)
Thesis (Ph.D.) - University of Queensland, 2005. / Includes bibliography.
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Novel dsRNA-dependent activation of a cellular antiviral response to vesicular stomatitis virus /Ostertag, Derek Glenn, January 2005 (has links)
Thesis (Ph. D.)--University of California, San Diego and San Diego State University, 2005. / Vita. Includes bibliographical references.
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A molecular study of viral proteins in the pathogenesis of infectious hematopoietic necrosis virusChiou, Pinwen Peter 11 December 1996 (has links)
The role of viral proteins in the pathogenesis of infectious hematopoietic necrosis
virus (IHNV) was studied at the molecular level. The expression of the viral genes at the
protein and RNA level, and their cellular localization, were characterized to further our
understanding of viral pathogenesis. The pathogenic effect of individual viral proteins was
also investigated and a method for detecting viral RNA in infected fish tissues was
developed.
The polarity of transcription was confirmed in terms of the relative amounts of each
viral protein. Also, cells treated with glycosylation inhibitors did not exhibit cytopathic
effect, demonstrating that a functioning host glycosylation system is necessary for viral
replication. These studies also revealed a previously undescribed non-glycosylated protein,
S, which appeared to be virus-encoded. The expression of the nonvirion protein (NV), was
also detected in infected kidney tissues. The location of M2 and NV in the cell was found to
be the nucleus and cytoplasm.
The expression of the NV gene was further analyzed at the level of transcription and
the regulation signals for IHNV transcription were investigated. Unique transcriptional
initiation and terminational signals for the fish lyssa-like rhabdoviruses were identified. The
transcriptional initiation signal, 3'-CGUG-5', was distinctly different from that of the other
rhabdoviruses, 3'-UUGU-5'.
The role of the M2 and NV proteins in viral pathogenesis was investigated by
transient expression of these proteins individually in cultured fish cells. The M2 protein
alone resulted in inhibition of host-directed gene expression at the level of transcription and
induction of nuclear fragmentation. The NV protein was not involved in the regulation of
the host gene expression, but was involved in another type of cytopathic effect characterized
as cell rounding. This is the first biological function attributed to the NV protein.
A PCR method was developed for detecting IHNV N-specific RNA in formalin-fixed,
paraffin-embedded fish tissues. The method is sensitive and specific. The technique
is capable of detecting viral RNA in samples that have been remained at room temperature in
10% buffered formalin for over 2 years. / Graduation date: 1997
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<i>Maize fine streak virus</i> (MFSV) gene expression and protein interactionCisneros Delgadillo, Fiorella Melina 08 August 2013 (has links)
No description available.
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Okrasné parkové dřeviny zásobárnou virů čeledi Rhabdoviridae / The ornamental park tree species as a resource of the Rhabdoviridae family virusesPECKOVÁ, Lucie January 2012 (has links)
Rhabdoviridae family viruses attacking the plant hosts were only described at the angiosperms. In this work, a gymnosperm rhabdoviridae infection was described for the first time ever ? specifically at Ginkgo biloba. Even though there were not observed any kinds of obvious infection symptoms on any of randomly chosen plant samples, through the molecular methods and detection primers the rhabdoviridae infection was proved at six of the plant samples. The acquired nucleotide and amino acid sequences, which were compared with the GenBank sequences, confirm the Rhabdoviridae family viruses occurrence. These given sequences demonstrated a certain analogy with a Strawberry crinkle virus assigned to the genus of Cytorhabdoviruses. The analyses proved a different reciprocal homology among the nucleotide sequences of the individual isolates, and in all likelihood an occurrence of two up to now unknown viruses in the Ginkgo biloba samples was proved for the first time. A definite categorization will be dependent on an acquisition and comparison of other sequences from the isolates genome and also on certain biological characteristics observation.
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