Crinivirus

Crinivirus, formerly the lettuce infectious yellows virus group, is a genus of viruses , in the family Closteroviridae. They are linear, single-stranded positive sense RNA viruses (and are therefore group IV). There are currently 13 species in this genus including the type species Lettuce infectious yellows virus. Diseases associated with this genus include: yellowing and necrosis, particularly affecting the phloem.