Odontoglossum ringspot virus
Encyclopedia
Odontoglossum ringspot virus (ORSV) is a plant pathogenic virus. It is one of the most common viruses affecting cultivated orchids, perhaps second only to the Cymbidium mosaic virus
. It causes spots on leaves and colored streaks on flowers. If a plant is also infected with the Cymbidium mosaic virus, it can lead to a condition called blossom brown necrotic streak. Its genome has been sequenced and contains approximately 6600 nucleotide
s organized into four open reading frame
s. Its similarity to other tobamovirus
es can be seen from the genetic data and the (limited) ability of a Tobacco mosaic virus
modified to contain ORSV movement protein to infect tobacco. However, only about 60% of the nucleotides in ORSV are identical with Tobacco mosaic virus.
ORSV belongs to the family of Virgaviridae.
Cymbidium mosaic virus
Cymbidium mosaic virus ' is a plant pathogenic virus of the family Flexiviridae.It and the Odontoglossum ringspot virus are two of the most common viruses affecting cultivated orchids worldwide. Infected plants can have less desirable flowers or other problems, causing significant financial...
. It causes spots on leaves and colored streaks on flowers. If a plant is also infected with the Cymbidium mosaic virus, it can lead to a condition called blossom brown necrotic streak. Its genome has been sequenced and contains approximately 6600 nucleotide
Nucleotide
Nucleotides are molecules that, when joined together, make up the structural units of RNA and DNA. In addition, nucleotides participate in cellular signaling , and are incorporated into important cofactors of enzymatic reactions...
s organized into four open reading frame
Open reading frame
In molecular genetics, an open reading frame is a DNA sequence that does not contain a stop codon in a given reading frame.Normally, inserts which interrupt the reading frame of a subsequent region after the start codon cause frameshift mutation of the sequence and dislocate the sequences for stop...
s. Its similarity to other tobamovirus
Tobamovirus
The genus Tobamovirus contains viruses with a positive sense RNA genome that infect plants. The most common tobamovirus is probably tobacco mosaic virus, which infects tobacco and other plants including potato, tomato, and squash. The name Tobamovirus comes from the host and symptoms: Toba for...
es can be seen from the genetic data and the (limited) ability of a Tobacco mosaic virus
Tobacco mosaic virus
Tobacco mosaic virus is a positive-sense single stranded RNA virus that infects plants, especially tobacco and other members of the family Solanaceae. The infection causes characteristic patterns on the leaves . TMV was the first virus to be discovered...
modified to contain ORSV movement protein to infect tobacco. However, only about 60% of the nucleotides in ORSV are identical with Tobacco mosaic virus.
ORSV belongs to the family of Virgaviridae.