Whitefly Associated Plant Viral Diseases and Their Interactions

Abstract

There are more than two thousand virus species including twenty one families and eight undesignated genera, majority of which cause various important diseases of crops that humans grow for fiber and food. Those viruses which infect the plants must have competence to move from diseased plant to healthy one. Notably insects are the preferred vectors for transmission of viruses to infect new host and fallows different transmission strategies to retain in insect body until reaches the healthy plant. Whiteflies majorly transmit the viruses through persistent manner (Virus particles are manage to pass through insect gut in to haemolymph and followed to salivary glands of insect before infection of host). Persistent transmission of viruses has two sub-classes: Persistent propagative and persistant circulative. There are four possible scenarios in virion binding to the insect stylet through monomer and dimer formed by the P1b protein encoded by the virus. Detailed study and schematic representations on the putative modes of virion interactions with maxillary stylet cuticle of whitefly was explained in Whitefly-associated plant viral diseases and their interactions.