Lettuce big-vein disease

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

Lettuce big-vein disease
Causal agentslettuce big-vein associated virus (LBVaV)
HostsLettuce
VectorsOlpidium brassicae
TreatmentSee text

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

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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

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References

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  1. ^ a b "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. PMID 18944196.{{cite journal}}: CS1 maint: multiple names: authors list (link)