- Source: Papaya mosaic virus
Papaya mosaic virus (PapMV) is a plant pathogenic virus in the genus Potexvirus and the family Alphaflexiviridae. PapMV is a filamentous, flexuous rod, 530 nm in length.
The virus is a monopartite strand of positive-sense, single-stranded RNA surrounded by a capsid made for a single viral encoded protein. The genome has been completely sequenced and is 6656 nucleotides long. It is transmitted by mechanical inoculation. No insect vector is involved and it is not transmitted in seeds.
Mature virions form banded inclusions that can be seen in leaf strips of infected plants when stained with either the Orange-Green protein stain or the Azure A nucleic acid stain.
Hosts, symptoms and distribution
Its principal host is papaya (Carica papaya), although in host range studies, PapMV was able to infect a few other plants including snapdragons (Antirrhinum majus). It is also reported to naturally infect Ullucus tuberosus.
PapMV was first reported in papaya in 1962 together with another virus that became known as Papaya ringspot virus (PRSV), a potyvirus. The two viruses were differentiated in 1965 and 1967 using particle lengths, serology, host range, inclusions, and aphid transmissibility.
PapMV causes mild mosaic symptoms on papaya leaves and stunting of the plant. It is known to occur in South America (Bolivia, Peru, and Venezuela) and the USA.
See also
Alternanthera mosaic virus
References
External links
Descriptions of Plant Viruses:Papaya mosaic virus
Plant Viruses Online
ICTVdB - The Universal Virus Database: Papaya mosaic virus
Family Groups - The Baltimore Method
Inclusions of PapMV stained in Azure A.
How to Stain for Plant Virus Inclusions
Kata Kunci Pencarian:
- Virus bercak cincin pepaya
- Sobemovirus
- Papaya mosaic virus
- Papaya ringspot virus
- Papaya
- Mosaic virus
- Watermelon mosaic virus
- Alternanthera mosaic virus
- List of virus species
- List of papaya diseases
- Ullucus
- Virus nanotechnology
