Final diagnosis


Cucumber mosaic virus (CMV)

The lettuce, located on the right of the photo, is infected with <b> Cucumber mosaic virus </b> (<i> Cucumber mosaic virus </i>, CMV). The plants are less developed and show a more spread out habit compared to the healthy control plants on the left.
Chlorotic mottling and embossing of the lamina are, in many situations, the presence of <b> cucumber mosaic virus </b> (<i> Cucumber mosaic virus </i>, CMV) in salads.
The leaves of this batavia are more or less covered with necrotic and brown interveinal alterations. Some leaves on the crown begin to dry out entirely. <b> Lettuce mosaic virus </b> (<i> Lettuce mosaic virus </i>, LMV) and <b> cucumber mosaic virus </b> (<i> Cucumber mosaic virus </i>, CMV)
The symptoms are often more marked following climatic periods with very contrasting night and day temperatures. Yellowing of the leaf blade and necrotic changes, localized or in patches, appear on the leaves. <b> Cucumber mosaic virus </b> (<i> Cucumber mosaic virus </i>, CMV)
Isometric virus particles approximately 29 nm in diameter. <b> Cucumber mosaic virus </b> (<i> Cucumber mosaic virus </i>, CMV)