• Source: Mastrevirus

Mastrevirus is a genus of ssDNA viruses, in the family Geminiviridae. Mostly monocotyledonous plants serve as natural hosts. They are vectored by planthoppers. There are 45 species in this genus. Diseases associated with this genus include: maize streak virus: maize streak disease (MSD).




Capsid proteins


Mastreviruses have an unusually diverse range of capsid proteins among the Geminiviridae. While all other genera have species with essentially identical proteins (and their producing genetic sequences) among themselves, Mastrevirus has seven protein clusters and three species that each constitute their own.




Taxonomy


The following species are recognized:




Structure


Viruses in Mastrevirus are non-enveloped, with icosahedral geometries, and T=1 symmetry. The diameter is around 22 nm, with a length of 38 nm. Genomes are circular and non-segmented, around 2.6-2.8kb in length.




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. Mostly monocotyledonous plants serve as the natural host. The virus is transmitted via a vector (leafhopper). Transmission routes are vector and mechanical.




References






External links


Viralzone: Mastrevirus
ICTV

Kata Kunci Pencarian:

• Beet curly top virus
• Mastrevirus
• Geminiviridae
• Maize streak virus
• Mosaic virus
• Wheat dwarf virus
• Common brown leafhopper
• Chloris striate mosaic virus
• Mungbean yellow mosaic virus
• List of virus species
• Beet curly top virus