Fig. 3

Symptoms induced by LMVmchVPg_Ec on the lettuce cultivar Trocadéro under white and UV light. The mcherry-VPg expression in systemically infected leaves, was examined by fluorescence microscopy with a 0.8× magnification, using a Leica MZFLIII Fluorescence Stereomicroscope. a–d: Plants infected with LMVmchVPg_Ec (clone LV15) at 15 days post inoculation (dpi) under white light (a, c) and UV light (b, d). The fluorescence is superimposable to yellow-green areas of the mosaic symptoms pattern observed under white light. e–f: mock-inoculated Trocadéro plants under white light (e) and UV light (f)