Abstract
Totally 102 symptomatic samples of cucurbitaceous vegetables showing yellowing were collected from fields of Uttar Pradesh and screened by RT-PCR assay for the presence of Crinivirus and Polerovirus. Among them, Crinivirus (16%) and Polerovirus (23%) were tested positive with the universal primer pairs. Based on the sequence analysis of amplified product, two Crinivirus (Cucurbit chlorotic yellows virus - CCYV and Cucurbit yellow stunting disorder virus - CYSDV) and two Polerovirus (Cucurbit aphid-borne yellows virus - CABYV and Luffa aphid-borne yellows virus - LABYV) species were characterized. Phylogenetic analysis revealed less genetic distance among the Indian isolates of CCYV, CYSDV and LABYV whereas CABYV closely related to Chinese isolates. To the best of our knowledge, this study documents infection of CCYV on cucumber, round melon and muskmelon; CYSDV on satputia and sponge gourd; CABYV on ivy gourd; and LABYV on ridge gourd, satputia and muskmelon for the first time in India.
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