Abstract
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 b0asis 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
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Abbreviations
- CMV:
-
Cucumber mosaic virus
- CP:
-
coat protein
- ELISA:
-
enzyme linked immunosorbent assay
- RT-PCR:
-
reverse transcription-polymerase chain reaction
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IHBT Communication Number: 0553. (The complete coat protein gene sequence ofCucumber mosaic virus isolate geranium has been submitted to EMBL database with accession No. AJ866272)
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Verma, N., Mahinghara, B.K., Ram, R. et al. Coat protein sequence shows thatCucumber mosaic virus isolate from geraniums (Pelargonium spp.) belongs to subgroup II. J. Biosci. 31, 47–54 (2006). https://doi.org/10.1007/BF02705234
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DOI: https://doi.org/10.1007/BF02705234