Faba bean necrotic yellows virus (FBNYV) is a Nanovirus disease of legumes.

[1] Algeria, Egypt, Eritrea, Ethiopia, Libya, Morocco, Sudan, Tunisia, Azerbaijan, Iran, Iraq, Jordan, Lebanon, Pakistan, Syria, Turkey, Yemen, Spain and Balearic Islands.

Vega-Rocha et al. 2007 disclose the structure of the FBNYV Rep's HUH endonuclease domain.

Timchenko et al. 2006 demonstrate that Clink is not necessary to produce symptoms in Vicia faba in laboratory conditions.

However they do find it to be highly conserved, 98% of successfully infected plants testing positive for Clink DNA.