Search Results - "Symons, R H"

Seasonal distribution of phytoplasmas in Australian grapevines by Constable, F. E., Gibb, K. S., Symons, R. H.

“…The distribution and persistence of phytoplasmas were determined in Australian grapevines. Phytoplasmas could be detected using the polymerase chain reaction…”
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Small Catalytic RNAs by Symons, Robert H

“…Catalytic RNAs are those that have the intrinsic ability to break and form covalent bonds. Such RNAs were termed ribozymes by Cech and his colleagues, and this…”
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A novel naturally occurring hybrid gene encoded by a plant RNA virus facilitates long distance virus movement by Ding, S. W., Li, W. X., Symons, R. H.

“…We recently identified a new cucumovirus‐specific gene (2b) which is encoded by RNA 2 of the cucumber mosaic cucumovirus (CMV) tripartite RNA genome and whose…”
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Numbering system for the hammerhead by HERTEL, K. J, PARDI, A, SYMONS, R. H, UHLENBECK, O. C, KOIZUMI, M, OHTSUKA, E, UESUGI, S, CEDERGREN, R, ECKSTEIN, F, GERLACH, W. L, HODGSON, R

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Citrus exocortis viroid RNA is associated with the largest subunit of RNA polymerase II in tomato in vivo by Warrilow, D, Symons, R.H

“…An active replication complex of citrus exocortis viroid (CEV) was isolated as a chromatin-enriched fraction of infected tomato leaf with CEV RNA synthesis…”
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Domains in Viroids: Evidence of Intermolecular RNA Rearrangements and Their Contribution to Viroid Evolution by Keese, Paul, Symons, Robert H.

“…On the basis of sequence homology a model is proposed for five structural and functional domains in viroids. These domains include (i) a conserved central…”
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New overlapping gene encoded by the cucumber mosaic virus genome by Ding, S W, Anderson, B J, Haase, H R, Symons, R H

“…Cucumber mosaic virus (CMV) contains three genomic RNAs (RNAs 1, 2, and 3) and a subgenomic RNA (RNA 4), a shared feature of the Bromoviridae family which…”
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Nucleotide sequence variation in a small region of the Grapevine fleck virus replicase provides evidence for two sequence variants of the virus by SHI, B J, HABILI, N, SYMONS, R H

“…Summary A region encoding the putative RNA replicase domain of Grapevine fleck virus (GFkV) was amplified from infected grapevine samples using the reverse…”
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Development of YLM, a codominant PCR marker closely linked to the Yd2 gene for resistance to barley yellow dwarf disease by PALTRIDGE, N. G, COLLINS, N. C, BENDAHMANE, A, SYMONS, R. H

“…The Yd2 gene in barley provides protection against barley yellow dwarf luteovirus (BYDV), the most economically devastating virus of cereals worldwide. Because…”
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Genetic variability amongst isolates of Australian grapevine phytoplasmas by Constable, F. E., Symons, R. H.

“…Heteroduplex mobility assay (HMA) was used to determine if genetic variability existed amongst isolates of Australian grapevine yellows (AGY) and the Buckland…”
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Self-cleavage of plus and minus RNAs of a virusoid and a structural model for the active sites by Forster, A C, Symons, R H

“…Virusoids are circular single-stranded RNAs dependent on plant viruses for replication and encapsidation. Virusoid replication appears to involve…”
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incidence, distribution and expression of Australian grapevine yellows, restricted growth and late season leaf curl diseases in selected Australian vineyards by Constable, F.E, Jones, J, Gibb, K.S, Chalmers, Y.M, Symons, R.H

“…Summary Surveys were conducted in four Chardonnay vineyards for 3 to 6 years and one Shiraz vineyard for 3 years to determine the yearly percentage of…”
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An interspecies hybrid RNA virus is significantly more virulent than either parental virus by Ding, S.W. (University of Adelaide, Glen Osmond, SA, Australia.), Shi, B.J, Li, W.X, Symons, R.H

“…Cucumber mosaic cucumovirus (CMV) infects a very wide range of plant species (1000 species). We recently demonstrated that a previously undescribed gene (2b)…”
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Isolates of citrus exocortis viroid recovered by host and tissue selection by Semancik, J. S, Szychowski, J. A, Rakowski, A. G, Symons, R. H

“…1 Department of Plant Pathology, University of California, Riverside, California 92521, U.S.A. and 2 Department of Plant Science, Waite Agricultural Research…”
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Evolutionary relationship between luteoviruses and other RNA plant viruses based on sequence motifs in their putative RNA polymerases and nucleic acid helicases by NUREDIN HABILI, SYMONS, R. H

“…Comparative studies of sequence motifs in the RNA polymerases and nucleic acid helicases of positive-sense RNA plant viruses have provided a new scheme for the…”
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Oligonucleotides as hybridization probes to localize phytoplasmas in host plants and insect vectors by Webb, D.R, Bonfiglioli, R.G, Carraro, L, Osler, R, Symons, R.H

“…Protocols have been developed using 20- to 24-mer oligodeoxynucleotides, originally designed as polymerase chain reaction primers, as hybridization probes for…”
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The Yd2 gene for barley yellow dwarf virus resistance maps close to the centromere on the long arm of barley chromosome 3 by Collins, N.C, Paltridge, N.G, Ford, C.M, Symons, R.H. (Adelaide Univ., Glen Osmond (Australia). Waite Inst. Dept. of Plant Science)

“…Barley yellow dwarf luteovirus (BYDV) causes serious yield losses in all cereals worldwide. The Yd2 gene from a number of Ethiopian barleys (Hordeum vulgare…”
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Efficient infection from cDNA clones of cucumber mosaic cucumovirus RNAs in a new plasmid vector by Ding, S.W, Rathjen, J.P, Li, W.X, Swanson, R, Healy, H, Symons, R.H

“…Full-length cucumber mosaic cucumovirus (CMV) cDNAs were cloned into a new plasmid vector containing a modified plant virus promoter designed to transcribe the…”
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Transmission of viroids via grape seeds by Wan Chow Wah, Y.F, Symons, R.H

“…The transmission of grapevine yellow speckle viroid 1 and hop stunt viroid via seeds was confirmed in 11 seedlings of eight grapevine (Vitis vinifera)…”
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Tissue and intra‐cellular distribution of coconut cadang cadang viroid and citrus exocortis viroid determined by in situ hybridization and confocal laser scanning and transmission electron microscopy by Bonfiglioli, Roderick G., Webb, Daryl R., Symons, Robert H.

“…Confocal laser scanning microscopy and transmission electron microscopy (TEM) were used in conjunction with in situ hybridization techniques to compare and…”
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