Ophioviruses CPsV and MiLBVV movement protein is encoded in RNA 2 and interacts with the coat protein

ROBLES LUNA GABRIEL*, PEÑA E. JOSÉ*, BORNIEGO M. BELÉN, HEINLEIN M. AND MARIA LAURA GARCIA

VIROLOGY

ACADEMIC PRESS INC ELSEVIER SCIENCE

Lugar: Amsterdam; Año: 2013 vol. 141 p. 152 - 161

0042-6822

Citrus psorosisvirus (CPsV) and Mirafiori lettucebig-veinvirus (MiLBVV),membersofthe Ophioviridae family,havesegmentednegative-sensesingle-strandedRNAgenomes.Todatenoreportshavedescribed how ophiovirusesspreadwithinhostplantsand/ortheproteinsinvolvedinthisprocess.Hereweshow that the54KproteinofCPsVisencodedbyRNA2anddescribeitssubcellulardistribution.Upontransient expressionin Nicotiana benthamiana epidermal cellsthe54Kprotein,andalsoits54Kcounterpart proteinofMiLBVV,localizetoplasmodesmataandenhanceGFPcell-to-celldiffusionbetweencells.Both proteins,butnotthecoatproteins(CP)oftherespectiveviruses,functionally trans-complement cell-to- cell movement-defective PotatovirusX (PVX) and Tobaccomosaicvirus (TMV) mutants.The54Kand54K proteinsinteractwiththevirus-specific CPinthecytoplasm,suggestingapotentialroleofCPin ophiovirus movement.Thisisthe first studycharacterizingthemovementproteins(MP)ofophioviruses