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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Kong, Q. Oh, J. W. Simon, A. E. |
| Description | Country affiliation: United States Author Affiliation: Kong Q ( Department of Biochemistry and Molecular Biology, University of Massachusetts, Amherst, MA 01003, USA.) |
| Abstract | Many satellite RNAs (sat-RNAs) can attenuate or intensify the symptoms produced by their helper virus. Sat-RNA C, associated with turnip crinkle virus (TCV), was previously found to intensify the symptoms of TCV on all plants in which TCV produced visible symptoms. However, when the coat protein open reading frame (ORF) of TCV was precisely exchanged with that of cardamine chlorotic fleck virus, sat-RNA C attenuated the moderate symptoms of the chimeric virus when Arabidopsis plants were coinoculated with the chimeric virus. Symptom attenuation was correlated with a reduction in viral RNA levels in inoculated and uninoculated leaves. In protoplasts, the presence of sat-RNA C resulted in a reduction of approximately 70% in the chimeric viral genomic RNA at 44 hr postinoculation, whereas the sat-RNA wa consistently amplified to higher levels by the chimeric virus than by wild-type TCV. TCV with a deletion of the coat protein ORF also resulted in a similar increase in sat-RNA C levels in protoplasts, indicating that the TVC coat protein, or its ORF, downregulates the synthesis of sat-RNA C. These results suggest that the coat protein or its ORF is a viral determinant for symptom modulation by sat-RNA C, and symptom attenuation is at least partly due to inhibition of virus accumulation. |
| File Format | HTM / HTML |
| ISSN | 10404651 |
| e-ISSN | 1531298X |
| Journal | THE PLANT CELL ONLINE |
| Issue Number | 10 |
| Volume Number | 7 |
| Language | English |
| Publisher | American Society of Plant Biologists |
| Publisher Date | 1995-10-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Discipline Botany Arabidopsis Virology Capsid Genetics Rna, Satellite Helper Viruses Open Reading Frames Plant Viruses Pathogenicity Virulence |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Plant Science |
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