Whitefly Transmitted Begomovirus Infection in Plant and Host Response: A Review

Abstract

Begomovirus infection in plant causes a great economic loss in many countries every year. Increasing rate of the infectivity of this single stranded DNA virus forces to study of its transmission in detail for the necessary researches regarding the control of this disease. This pathogenic virus is whitefly vector borne and transferred from one plant to another plant during the suckling of phloem sap by that vector. Viral transmissibility through this insect vector may depend on the genetic variations within the cryptic species groups. Two distinct categories of begomoviruses viz., bipartite and monopartite types consist of different genome organization. Virion particles modify the intracellular environment of the host according to their need of replication and survival. Viral replication takes place through RCR as well as RDR methods. Interplay among host, vector and pathogen is crucial for the establishment of infection. Several endosymbiotic organisms living within the insect vector also have vital role here. Being infected with this virus, host plant responds with defensive activities like TGS, PTGS, autophagy, hormonal regulation, metabolic alteration etc. However, virus also counteracts those through the manipulation of several pathways of cellular events. It is necessary to study in different directions and utilize advanced molecular biological techniques to develop begomovirus resistance within plants.

Screening of Beta Satellite Associated DNA-A Chili Leaf Curl Virus from Maharashtra

“…Monopartite begomoviruses are often associated with smaller DNA components, known as satellite DNAs (Kumar et al, 2015;Singh et al, 2016). There are two types of satellite DNAs namely alphasatellite and betasatellite, based on organization of their satellite DNA and their effects on the symptoms produced by the helper begomovirus (George et al, 2014;Biswas and Mandal, 2023). Alphasatellite and betasatellite both depend on helper virus for their replication and in many cases, suppress the symptoms produced by viruses (Idris et al, 2011).…”