Symptoms of infection.

<p>A. Leaf of <i>N</i>. <i>occidentalis ssp hesperis</i> Nt-5 infected with BYMV exhibiting small necrotic lesions within 7 days of infection. B. <i>N</i>. <i>simulans</i> SL19 exhibited small chlorotic rings (arrow) 15 dpi with BYMV. C. Symptoms of infection of YTMMV on <i>N</i>. <i>benthamiana</i> RA-4 20 dpi. D. <i>N</i>. <i>benthamiana</i> VL552B2.1 exhibiting symptoms of leaf mottling and deformation 20 dpi with YTMMV. E. <i>N</i>. <i>benthamiana</i> Kx-1 (left) exhibiting chlorotic spots 20 dpi with BYMV. Plant on the right is uninfected.