title: Characterization of the promoter of Grapevine vein clearing virus.
abstract: Grapevine vein clearing virus (GVCV) is a recently discovered DNA virus in grapevine that is closely associated with the grapevine vein clearing syndrome observed in vineyards in Missouri and surrounding states. The genome sequence of GVCV indicates that it belongs to the genus Badnavirus in the family Caulimoviridae. To identify the GVCV promoter, we cloned portions of the GVCV large intergenic region in front of a GFP gene present in an Agrobacterium tumefaciens binary vector. GFP expression was assessed by ELISA 3 days after agroinfiltration of Nicotiana benthamiana leaves. We found that the GVCV DNA segment between nts 7332 and 7672 directed expression of GFP and this expression was stronger than expression using the Cauliflower mosaic virus 35S promoter. It was revealed by 5' and 3' RACE that transcription was initiated predominantly at nt 7571 and terminated at nt 7676.
authors.affiliation: Division of Plant Sciences, University of Missouri-Columbia, Columbia, MO 65211, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Division of Plant Sciences, University of Missouri-Columbia, Columbia, MO 65211, USA.
authors.forename: C A
authors.initials: CA
authors.lastname: Angel
authors.affiliation: Division of Plant Sciences, University of Missouri-Columbia, Columbia, MO 65211, USA.
authors.forename: S
authors.initials: S
authors.lastname: Valdes
authors.affiliation: Center for Grapevine Biotechnology, William H. Darr School of Agriculture, Missouri State University, Mountain Grove, MO 65711, USA.
authors.forename: W
authors.initials: W
authors.lastname: Qiu
authors.affiliation: Division of Plant Sciences, University of Missouri-Columbia, Columbia, MO 65211, USA.
authors.forename: J E
authors.initials: JE
authors.lastname: Schoelz
mesh_terms: D016960:Agrobacterium tumefaciens / Q000821:virology; D052639:Caulimoviridae / Q000235:genetics*; D017796:Caulimovirus / Q000235:genetics; D004267:DNA Viruses / Q000235:genetics*; D004279:DNA, Viral / Q000235:genetics; D008923:Missouri; D010935:Plant Diseases / Q000821:virology*; D018515:Plant Leaves / Q000821:virology; D011401:Promoter Regions, Genetic / Q000235:genetics*; D014026:Nicotiana / Q000821:virology; D027843:Vitis / Q000821:virology*
chemical_list: D004279:DNA, Viral