Coat protein sequence shows that Cucumber mosaic virus isolate from geraniums (Pelargonium spp.) belongs to subgroup II.
A viral disease was identified on geraniums (Pelargonium spp.) grown in a greenhouse at the Institute of Himalayan Bioresource Technology (IHBT), Palampur, exhibiting mild mottling and stunting. The causal virus (Cucumber mosaic virus, CMV) was identified and characterized on the basis of host range, aphid transmission, enzyme linked immunosorbent assay (ELISA), DNA-RNA hybridization and reverse transcription polymerase chain reaction (RT-PCR). A complete coat protein (CP) gene was amplified using degenerate primers and sequenced. The CP gene showed nucleotide and amino acid homology up to 97%-98% and 96%-99%, respectively with the sequences of CMV subgroup II. The CP gene also showed homologies of 75%-97% in nucleotide and 77%-96% in amino acid with the CMV Indian isolates infecting various crops. On the basis of sequence homology, it was concluded that CMV-infecting geraniums in India belong to subgroup II.
Verma
Neeraj
N
Plant Virus Lab, Floriculture Division, Institute of Himalayan Bioresource Technology, Palampur, India. neer_ali@yahoo.com
Mahalingam
B K
BK
Ram
Raja
R
Zaidi
A A
AA
D000595:Amino Acid Sequence; D001483:Base Sequence; D036022:Capsid Proteins / Q000737:chemistry* / Q000235:genetics*; D017799:Cucumovirus / Q000737:chemistry / Q000145:classification* / Q000235:genetics; D008969:Molecular Sequence Data; D031316:Pelargonium / Q000821:virology*; D010802:Phylogeny; D010935:Plant Diseases / Q000821:virology
D036022:Capsid Proteins