Lettuce speckle mottle virus (LSMV)
 

The  Lettuce speckles mottle virus (LSMV) belongs to the family of Rhabdoviridae and gender Umbravirus (Figure 1). It is transmitted by several aphids: including Acyrthosiphon ( Aulacorthum ) solani , Brevicorne brassicae , Myzus persicae , according to the persistent mode.


- Symptoms

This virus induces symptoms quite similar to those of BWYV. Chlorotic, angular spots appear on old leaves.


- Main characteristics

LSMV was first described on beets, lettuce and spinach in 1978 in the United States. It can be artificially inoculated with many hosts belonging to several botanical families: chenopodiaceae, asteraceae, solanaceae ...).