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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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Related references

Chandra, K.; Gupta, B.M.; Verma, H.N., 1978: Influence of age of host plant on the expression of acquired local and systemic antiviral resistance induced by treatment with trichothecium polysaccharide in N. glutinosa. Nicotiana glutinosa plants, treated with a polysaccharide produced by Trichothecium roseum (T-poly) 48 h before inoculation with tobacco mosaic virus, showed a significantly greater reduction in virus lesion count in the 35- and 50-day-old groups...

Chandra, K.G.pta, B.; Verma, H., 1978: Influence of age of host plant on the expression of acquired local and systemic antiviral resistance induced by treatment with Trichothecium polysaccharide in Nicotiana glutinosa. Current science: 47 (5) 168-170

Mukerjee, K.; Awasthi, L.P.; Verma, H.N., 1982: Further studies on the antiviral resistance induced in host plants treated with the leaf extract of Datura metel L. In further studies [RPP 59, 5350] the extract inhibited infection by Gomphrena mosaic and sunn hemp rosette viruses in their hypersensitive hosts. The host and virus combination most affected by the extract was Cyamopsis tetragonoloba and SRV. Res...

Mukerjee, K.A.asthi, L.1; Verma, H., 1982: Further studies on the antiviral resistance induced in host plants treated with the leaf extract of Datura metel L. India. Indian journal of forestry 5(4): 302-305

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