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Updated: Aug 3, 2025
Combining Analysis of DNA in a Crude Virion Extraction with the Analysis of RNA from Infected Leaves to Discover New Virus Genomes
Published on: July 27, 2018
Identification of a putative novel cholivirus in the transcriptome of Gymnema sylvestre R. Br
V Kavi Sidharthan1, Gayatri Vanamala2, V Rajeswari3
1Division of Genetics and Tree Improvement, ICFRE-Institute of Forest Biodiversity, Hyderabad, India. kavi.icfre@gmail.com.
Abstract:
Gymnema sylvestre is a tropical climber species that is widely used in traditional medicine since ages. In the present study, the transcriptome datasets of G. sylvestre available in public domain were screened for the presence of novel plant viral sequences and a putative novel virus tentatively named as Gymnema sylvestre virus 1 (GysV1) was identified. Coding-complete genome segments of GysV1 that are 6.35 kb (RNA1) and 3.98 kb (RNA2) long possessed a single large open reading frame coding for a polyprotein. BLASTp, sequence identity and phylogenetic analyses revealed the relatedness of GysV1 to the members of the subgenus Cholivirus (genus Sadwavirus; family Secoviridae; order Picornavirales). Based on the species demarcation criteria of the family Secoviridae, GysV1 can be regarded as a new cholivirus member.
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