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Systemic induced antiviral resistance by plant extract alters physiology of susceptible test host

, : Systemic induced antiviral resistance by plant extract alters physiology of susceptible test host. Indian Journal of Plant Pathology 5(1): 69-72

Aqueous extract of leaves of a non-host plant, Clerodendrum aculeatum, prevented infection of sunnhemp rosette virus on Cyanopsis tetragonoloba when applied before challenge inoculation. Resistance thus induced was systemic in nature, and altered the physiology of test host. Variations in the profiles of total proteins, and enzymes.eta.atalase, polyphenoloxidase, and peroxidase have been recorded. Catalase exhibited higher activity 2h after extract application at site. Polyphenoloxidase attained its peak figure 2h after treatment at both sizes while peroxidase displayed an appreciable change only at site of extract application. Development of resistance between 2 and 4h in association with altered enzyne profiles may signify active host mediation in development of systemic induced resistance.

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