Notes on Genus: Mandarivirus

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 kDaCoat protein
6 25 kDaNucleic acid binding protein (NABP)