Association of Kenaf leaf curl betasatellite with Mesta yellow vein mosaic virus in naturally infected Malvastrum coromandelianum
- Sidra Anwar
- Tropical Plant Pathology
A virus isolate Y160 was obtained from Malvastrum coromandelianum showing yellow vein symptoms in Baoshan, Yunnan province of China. The complete nucleotide sequence of DNA-A was determined, it contains 2747 nucleotides and has typical genomic organization of a begomovirus. Comparisons show that the total DNA-A of Y160 has the highest sequence identity (82.2%) with that of Malvastrum yellow vein virus-[Y47] (AJ457824), while less than 77.6% identities are found when compared with the other begomoviruses. The molecular data show that Y160 is a distinct begomovirus species, for which the name Malvastrum yellow vein Yunnan virus (MYVYNV) is proposed. Satellite DNA molecule (Y160β) was found to be associated with Y160 using the abutting primers beta0l and beta02 specific for DNAβ. Y160β consists of 1350 nucleotides, with a functional ORF (βC1) in complementary-sense DNA. Y160β has the highest sequence identity (73.5%) with DNAβ molecule associated with Malvastrum yellow vein virus-[Y47] (AJ421482).