Potato leaf roll virus 4498922 179814585 2007-12-23T18:23:01Z Noah Salzman 857337 add taxobox {{Taxobox | virus_group = iv | familia = '''''Luteoviridae''''' | genus = ''[[Polerovirus]]'' }} '''''Potato leaf roll virus''''' (PLRV) is part of the [[genus]] ''[[Polerovirus]]'' and [[Family (biology) |family]] ''[[Luteoviridae]]''. This [[virus]] like the name suggests infects [[potato]]es and is a particular problem in the Americas. The virus is spread from [[plant]] to plant by [[insect]] [[Vector (biology) |vectors]] with the green peach aphid (GPA), ''[[Myzus persicae]]'' one of the most effective. Over the [[winter]] periods, the [[virus]] remains in the infected plant and remains the primary source of the PLRV [[inoculum]]. Upon infection the [[virus]] is largely contained to the [[phloem]] tissue and infects daughter tubers through the [[vascular system]] Symptoms of this [[virus]] include a slight rolling of new leaves and will be stiffer than normal. Discoloration will also occur ranging from a light green through yellow and red and ending with the underside of the leaves turning purple. This disease does not kill the plant however, yields from the [[plant]] will be decreased heavily and all the [[tubers]] will be of poorer quality due to [[necrosis]] to the [[tubers]]. ==References== *[http://www.wsu.edu/~potatoes/leafroll.htm Plant viruses online - www.wsu.edu] {{virus-plant-disease-stub}} [[Category:Plant pathogens and diseases]] [[Category:Potato diseases]] [[da:Bladrullesyge]] [[de:Blattrollkrankheit]]