alexa Molecular identification of a new begomovirus associated with yellow mosaic disease of Jatropha gossypifolia in India.


Journal of Plant Pathology & Microbiology

Author(s): Snehi SK, Raj SK, Khan MS, Prasad V

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Abstract Yellow mosaic disease was observed on Jatropha gossypifolia plants growing in Kathaupahadi, Madhya Pradesh, India, and whiteflies (Bemisia tabaci) were found in the vicinity. Association of a new begomovirus with yellow mosaic disease of J. gossypifolia has been detected by PCR using begomovirus DNA-A-specific primers. The complete DNA-A genome (~2.7 kb) of this virus isolate was amplified by rolling-circle amplification (RCA) followed by digestion with Bam HI. The ~2.7-kb amplicons was cloned and sequenced, and the data obtained were submitted to GenBank under accession numbers FJ177030. The genome of the virus isolate consisted of six open reading frames (ORFs): V2 (pre-coat protein) and V1 (coat protein) in the virion sense and C3 (REn protein), C2 (TrAP protein), C1 (replication-associated protein) and C4 (C4 protein) in the complementary sense. BLASTn analysis of the nucleotide sequence (2757 nt) of the viral genome (FJ177030) showed 84-85\% identity and a distinct phylogenetic relationship with DNA-A of tomato leaf curl virus-Bangalore II (U38239) and tomato leaf curl Karnataka virus (AY754812). Based on its 85\% sequence identity to all other begomoviruses known to date and ICTV species demarcating criteria (< 88\% identity), the name Jatropha yellow mosaic India virus (JYMIV) is proposed. JYMIV is considered to be monopartite, as neither DNA-B nor DNA-β components associated with begomoviruses were detected. This article was published in Arch Virol and referenced in Journal of Plant Pathology & Microbiology

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