Molecular characterization of two soybean-infecting begomoviruses from India and evidence for recombination among legume-infecting begomoviruses from South-East Asia

Gamma rays induced urdbbean [Vigna mungo (L.) Hepper] mutants with YMV resistance, good batter quality and bold seeded type

“…Of these MYMIV and MYMV are most important as these infect large number of legumes in India. MYMIV is more predominant in northern, central and eastern regions of India (Usharani et al 2004) and MYMV in southern region (Karthikeyan et al 2004;Girish and Usha 2005;Haq et al 2011) to which Tamil Nadu state belongs.…”

Genomic sequence characterization of Begomovirus infecting soybean and molecular evolutionary genomics of Legume yellow mosaic viruses (LYMVs)

“…Analysis of recombination hot spot in LYMV DNA A affirmed AC5 and AV1 genes are more prone to genetic recombination. Similarly, genetic recombinants in MYMIV population (Girish and Usha 2005) and within the rep (replication associated protein) gene of Geminiviruses have also been demonstrated (Vadivukarasi 2007). This genetic variation and genetic recombination based on DNA-A genomic components emphasizes its role in generating variability contrary to the high genetic diversity observed among the DNA B component of the begomoviruses .…”

“…In this study complete genome of Mungbean yellow mosaic India virus (MYMIV) isolate infecting soybean in the central Indian region is described. Earlier reports indicate two species of LYMVs are involved in the etiology of soybean yellow mosaic disease (Usharani et al, 2004;Girish and Usha 2005;Ramesh et al, 2013). Soybean isolates of Mungbean yellow mosaic virus (MYMV) and Mungbean yellow mosaic India virus (MYMIV) were known to cause the disease respectively in Southern and Northern region of the country (Usharani et al, 2004;Ramesh et al, 2016).…”

Significant plant virus diseases in India and a glimpse of modern disease management technology

“…The progeny virus particles from the agroinoculated plants produced typical yellow mosaic symptoms when transmitted by WF on healthy blackgram seedlings. Nucleotide sequence analyses of isolates of yellow mosaic collected from different legume hosts of MYMV established the presence of Mungbean yellow mosaic India virus (MYMIV) on urdbean, mungbean, soybean, pigeonpea, French bean, mothbean and cowpea in northern-, central-and eastern-India, Pakistan and Bangladesh and of Mungbean yellow mosaic virus (MYMV) on mungbean and urdbean in western and southern India and Thailand (Girish and Usha 2005;Malathi et al 2005;Usharani et al 2004).…”

“…Nucleotide sequence similarity in DNA-A of these isolates was 82% and in DNA-B 71%. The analyses of the CR of these isolates indicated considerable divergence in the origin of replication (ori), but this did not impair their infectivity as demonstrated by agroinfection with partial tandem repeats (PTRs) of MYMIV-Sb (Girish and Usha 2005).…”