Total Proteins and Enzymes Alterations Associated with Induction of Antiviral Resistance in Treated Plants

Systemic resistance inducer, extracted from the leaves Pseuderanthemum bicolor Radlk (PB-SRI) had the ability to prevent sunnhemp rosette virus infection in Cyamopsis tetragonoloba test plants. The systemic resistance induced was maximum at 24 h after the PB-SRI treatment. The alterations of enzymes catalase, peroxidase and total proteins activities exhibited a definite pattern with their concentration peak values at 24 h of treatment, corresponded with highest antiviral activity which thereafter decreased gradually. A direct relationship between alterations of total proteins and enzymes activities was observed in treated hosts. The product of these enzymes catalyze reactions may have a role in observed antiviral effects. Apart from that induction of resistance is an active host mediated phenomenon with the involvement of DNA-dependent RNA synthesis and consequently the formation of newer antiviral proteins within treated test host involved in induction of antiviral resistance in C. tetragonoloba test plants.