Notes on Genus: Mandarivirus
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flexuous filaments
Type member: Indian citrus ringspot virus
Contents
- Members of this Genus
- General Description
- Morphology
- Electron Micrograph
- Genome
- Genus Genomic Organization
- Genome Map
- Type Member Genomic Organization
- All Known Sequences
- Curated Sequences
General Description
The genus Mandarivirus is one of the genera in the family Alphaflexiviridae. In genome organisation and phylogenetic analysis its single member particularly resembles viruses in the genus Potexvirus but the virions are longer, the coat protein is larger and there is an additional ORF6. It is named from mandarin (Citrus reticulata), the host of the type species.Morphology
Virions filamentous, not enveloped, c. 650 nm long and 13 nm in diameter.Genome
Monopartite, linear, single stranded, positive-sense RNA, c. 7600 nucleotides long. The 3' terminus has a poly(A) tract.Genus Genomic Organization
There are a total of 6 open reading frames, probably translated by means of subgenomic RNAs.Type Member Genomic Organization
There are a total of 6 open reading frames, probably translated by means of subgenomic RNAs:| 1 | 187 kDa | Polymerase |
| 2 | 25 kDa | ORFs 2-4 (Triple gene block): translated from different reading frames and all involved in cell-to-cell movement |
| 3 | 12 kDa | |
| 4 | 6 kDa | |
| 5 | 36 kDa | Coat protein |
| 6 | 25 kDa | Nucleic acid binding protein (NABP) |