Emerging Plant Viruses: a Diversity of Mechanisms and Opportunities

Response of Host Resistance in Mungbean Cultivars against Yellow Mosaic Disease Caused by Mungbean Yellow Mosaic Virus (MYMV)

“…The results of present screening were in accordance with several other findings. Asthana (1998) (Rojas andGilbertson, 2008 andSeal et al, 2006). They have higher mutation rates than other pathogens, and distinct evolutionary dynamics compared to bacterial and fungal phytopathogens.…”

Emerging threats of begomoviruses to the cultivation of medicinal and aromatic crops and their management strategies

“…Both the phenomenon are responsible for the diversification in begomovirus between variants of the same virus, between different species and between different genus leading to the ability to adapt in different environment and forming new variants in new hosts. Mutations and acquiring new components like satellite molecules in the viral genome resulted in the emergence of new viruses [23,124,135]. One of a key recombinant event in ToMoV DNA-A CR with that of BDMV DNA-B component has resulted in the emergence of new virulent fitter begomovirus.…”

Tomato leaf curl virusand Cotton leaf curl Multan betasatellite can cause mild transient symptoms in cotton

“…Begomovirus as a genus is considered as emergent plant viruses (Rojas and Gilbertson 2008). Many factors are responsible for the emergent nature of begomoviruses, including: genetic changes such as random mutations, recombination and re-assortment; long-distance movement of viruses to new agro-ecosystems; changes in vector population dynamics; and acquisition of novel virus-like entities (Rojas and Gilbertson 2008).…”

“…Many factors are responsible for the emergent nature of begomoviruses, including: genetic changes such as random mutations, recombination and re-assortment; long-distance movement of viruses to new agro-ecosystems; changes in vector population dynamics; and acquisition of novel virus-like entities (Rojas and Gilbertson 2008). Given that ToLCV-sat DNA is a defective DNA b (Saunders et al 2000), it is possible that betasatellite(s) is present in weed plants in northern Australia.…”