Lettuce big-vein disease

Lettuce big-vein disease
Lettuce big-vein disease
Causal agents	lettuce big-vein associated virus (LBVaV)
Hosts	Lettuce
Vectors	Olpidium brassicae
Treatment	See text

Lettuce big-vein disease causes leaf distortion and ruffling in affected lettuce plants.

This disease was first associated in 1983 with a rod-shaped virus named lettuce big-vein associated virus (LBVaV), which is transmitted by the obligately parasitic soil-inhabiting fungus, Olpidium brassicae.[1] However, in 2000, a second virus, Mirafiori lettuce big-vein virus (MLBVV), was found in lettuce showing big-vein symptoms. Furthermore, since the lettuce infected with LBVaV alone doesn't develop the symptoms while the infected with NLBVV one does, the latter virus is considered to be a main agent of the big-vein disease.[2]

Symptoms

Affected plants have veins that become large and clear, causing the rest of the leaf to become ruffled. Severely infected plants may fail to form a lettuce head.[1]

Control

Grow disease-resistant cultivars.
Use disease-free healthy seeds.
Treat with methyl bromide, chloropicrin, or dazomet solution.

References

"Big Vein". University of California Integrated Pest Management Program. Retrieved 24 June 2019.
Sasaya, T., H. Fujii, K. Ishikawa, H. Koganezawa (2008). "Further evidence of Mirafiori lettuce big-vein virus but not of Lettuce big-vein associated virus with big-vein disease in lettuce". Phytopathology. 98 (4): 464–468. doi:10.1094/PHYTO-98-4-0464.{{cite journal}}: CS1 maint: multiple names: authors list (link)

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[UCIPM-1] "Big Vein". University of California Integrated Pest Management Program. Retrieved 24 June 2019.

[2] Sasaya, T., H. Fujii, K. Ishikawa, H. Koganezawa (2008). "Further evidence of Mirafiori lettuce big-vein virus but not of Lettuce big-vein associated virus with big-vein disease in lettuce". Phytopathology. 98 (4): 464–468. doi:10.1094/PHYTO-98-4-0464.{{cite journal}}: CS1 maint: multiple names: authors list (link)