Becurtovirus is a genus of viruses, in the family Geminiviridae. Dicotyledonous plants serve as natural hosts. There are three species in this genus.
Taxonomy The genus contains the following species, listed by scientific name and followed by the exemplar virus of the species:
Becurtovirus betae, Beet curly top Iran virus Becurtovirus exomis, Exomis microphylla associated virus Becurtovirus spinaciae, Spinach curly top Arizona virus
Structure Viruses in Becurtovirus are non-enveloped, with icosahedral geometries, and T=1 symmetry. Genomes are circular and non-segmented, around 3.0kb in length.
Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentationBecurtovirusTwinned IcosahedralIncomplete T=1Non-envelopedCircularMonopartite
Life cycle Viral replication is nuclear. Entry into the host cell is achieved by penetration into the host cell. Replication follows the ssDNA rolling circle model. DNA-templated transcription is the method of transcription. The virus exits the host cell by nuclear pore export, and tubule-guided viral movement. Dicotyledonous plants serve as the natural host.
Genus Host details Tissue tropism Entry details Release details Replication site Assembly site TransmissionBecurtovirusSpinachPhloem; sieve; phloem-limitedViral movement; mechanical inoculationBuddingNucleusNucleusViral movement; contact
References
External links Viralzone: Becurtovirus ICTV