Variability of the PIPO protein within Sunflower chlorotic mottle virus (SuCMoV) and the Potato virus Y (PVY) subgroup members

BEJERMAN, N.; GIOLITTI, F.; DE BREUIL, S.; LENARDON, S.

Congreso; 2do Congreso Argentino de Bioinformática y Biología Computacional; 2011

Sunflower chlorotic mottle virus (SuCMoV) is the most prevalent sunflower virus present in Argentina. Two biologically different strains of SuCMoV have been described: the common (C)  and the chlorotic ringspots (CRS). Their complete genomic sequence has  been determined. SuCMoV belongs to the Potato virus Y (PVY) subgroup into the Potyvirus genus. The genome of SuCMoV, similar to other members in the potyvirus, contains one open reading frame (ORF) encoding a single large polypeptide that is cleaved by three virus-encoded proteinases to produce ten mature proteins. However, in 2008 [2], a small ORF, embedded in the P3 cistron was discovered in the potyvirus and termed PIPO (Pretty Interesting Potyviridae ORF).To our knowledge, no research has been conducted to study the intra and interspecies variability of PIPO and compare it with that one  found in the other potyviral proteins.