Abstract
Cucurbitaceous crops are a key group of vegetables widely cultivated in India. Characterized yellowing symptoms along with interveinal chlorosis, mottling and downward curling were observed in ridge gourd, snake gourd, and bottle gourd along with the presence of whiteflies (Bemisia tabaci). To investigate the infecting virus, RT-PCR assays followed by sequencing and Transmission Electron Microscopy (TEM) analysis were performed. Sanger sequencing, nucleotide sequence analysis, and TEM imaging confirmed the association of cucurbit yellow stunting disorder virus (CYSDV), genus Crinivirus within the family Closteroviridae. This study reports the natural occurrence of CYSDV in ridge gourd, snake gourd, and bottle gourd for the first time in India.
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