mandarivirus mandarivirus mandarivirus is a subgenus of viruses in the order tymovirales, family alphaflexiviridae, genus potexvirus. there are three species in this subgenus. diseases associated with this subgenus commonly include yellow ringspot and rapid decline of the tree. mandarivirus virus classification (unranked): virus realm: riboviria kingdom: orthornavirae phylum: kitrinoviricota class: alsuviricetes order: tymovirales family: alphaflexiviridae genus: potexvirus subgenus: mandarivirus taxonomy the following species are assigned to the subgenus: citrus yellow mottle-associated virus citrus yellow vein clearing virus indian citrus ringspot virus structure viruses in mandarivirus are non-enveloped, with flexuous and filamentous geometries. the diameter is around 13 nm. genomes are linear, around 7.5kb in length. the genome codes for 6 proteins. subgenusstructuresymmetrycapsidgenomic arrangementgenomic segmentation mandarivirusfilamentousnon-envelopedlinearmonopartite life cycle viral replication is cytoplasmic. entry into the host cell is achieved by penetration into the host cell. replication follows the positive stranded rna virus replication model. positive stranded rna virus transcription is the method of transcription. the virus exits the host cell by tripartite non-tubule guided viral movement. citrus trees serve as the natural host with grafting being a common transmission route. subgenushost detailstissue tropismentry detailsrelease detailsreplication siteassembly sitetransmission mandarivirusplantsnoneviral movement; mechanical inoculationviral movementcytoplasmcytoplasmunknown