Comparative host range and serological studies of papaya ringspot potyvirus isolates
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Authors
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GOURGOPAL ROY, R.K. JAIN*, A.I. BHAT and A. VARMA
Advanced Centre for Plant Virology, Division of Plant Pathology, indian Agricultural Research institute,
New Delhi i10 012
Keywords:
Papaya ringspot virus, P and W isolates, host range, serologyAbstract
Two papaya ringspot potyvirus isolates (P and W) from Delhi were evaluated for host range and serological features. P and W isolates had limited host range. P isolate was pathogenic to papaya [pawpaw] while W isolate was apathogenic. P was predominantly confined to Caricaceae and W to members of Cucurbitaceae only. The molecular weight of the capsid proteins was 34 kd in SDS-PAGE. Both the isolates had similar serological features as determined by direct antigen coated-enzyme-linked immunosorbent assay (DAC-ELISA) with polyclonal antisera.
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