Virion
Morphology: |
Bacilliform |
Envelope: |
No |
Diameter (nm): |
30–35 |
Length (nm): |
130–300 |
Structural components: |
Capsid |
Buoyant density (g/mL): |
? |
Additional information: |
Very tight association of capsid and DNA |
Genome
Nucleic acid: |
DNA |
Strandedness: |
Double-stranded |
Polarity: |
– |
Configuration: |
Circular |
Segments: |
1 |
Size (kb): |
8 |
Transcription units: |
2 |
Additional information: |
DNA with one discontinuity in each strand |
Replication Strategy
Entry mechanism: |
Insect transmission (green leafhopper); requires helper factor from RTSV infected plants |
Site of transcription: |
Nucleus |
Transcriptase: |
Cellular RNA polymerase II |
Site of genome replication: |
Pregenomic RNA in nucleus; cytoplasm for reverse transcript |
Replicase: |
Virus-encoded reverse transcriptase |
Replication intermediate: |
Pregenomic RNA |
Site of virion assembly: |
Unknown |
Egress mechanism: |
Unknown |
Additional information: |
No information on cell-to-cell movement |
History
Year |
Event/discovery |
References |
|---|---|---|
1965+ |
Spread of rice tungro disease |
Thresh JM... |
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References
Hibino H (1996) Biology and epidemiology of rice viruses. Annu Rev Phytopathol 34:249–274
Hohn T, Fütterer J (1997) The proteins and functions of plant pararetroviruses: Knowns and unknowns. Crit Rev Plant Sci 16:133–161
Hull R (1996) Molecular biology of rice tungro viruses. Annu Rev Phytopathol 34:275–297
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Fütterer, J. (2011). Tungrovirus‡ . In: Tidona, C., Darai, G. (eds) The Springer Index of Viruses. Springer, New York, NY. https://doi.org/10.1007/978-0-387-95919-1_45
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DOI: https://doi.org/10.1007/978-0-387-95919-1_45
Publisher Name: Springer, New York, NY
Print ISBN: 978-0-387-95918-4
Online ISBN: 978-0-387-95919-1
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