Text Size:   A+ A- A   •   Text Only
Find     
Site Image
Peach latent mosaic viroid
Peach latent mosaic viroid
Synonyms
 
  • peach mosaic virus 

Plant hosts
 
Peaches and almond x peach hybrids are the only hosts of peach latent mosaic viroid. Other Prunus species are resistant.
 

Symptoms
 
The first signs of disorder become apparent on the trees the second year after planting. Blossoms will have pink broken lines on the rosaceous - white petals in warm temperatures. Some isolates cause mosaic, blotch, calico, and necrosis of leaves, whereas others induce stem pitting and leaf twisting. The pathogen causes fruit to be irregularly shaped, flattened, and colorless with cracked sutures and enlarged pits.
 
Peach infected with peach latent mosaic viroid
 
Peach infected with peach latent mosaic viroid
 
Image courtesy of www.forestryimages.or

Transmission
 
Peach latent mosaic viroid is vectored by the peach bud mite. This mite feeds and reproduces within the peach buds. An infected mite can transmit the disease to a healthy tree. The pathogen is also easily graft-transmitted to healthy trees using fruits, leaf, root, or bud tissues and a contact period as little as 2-days.

Geographic distribution
 
Algeria, China, France, Greece, Italy, Japan, Mexico, Morocco, and Spain
USA: Arizona,Arkansas, southern California, New Mexico, Oklahoma, and Utah 
 

Applicable regulations
 
OAR 603-052-0117, Quarantine: Peach latent mosaic virus
 
Return to plant pathogen list