Author(s):

Shelly Kapoor and Anil Handa

Abstract: Most plants produce a broad range of secondary metabolites that are toxic to pathogens, either as part of their normal programme of growth and development or in response to biotic stress and respond with a wide array of complicated procedures which use constitutive and induced phenolic substances affecting the level of susceptibility or resistance of the host plant. Detailed studies were conducted on interactions between PNRSV and peach trees resulting in necrotic shot holes to have a better understanding of how an increase in the expression of endogenous phenolic compounds could influence resistance against PNRSV in peach trees. The studies concluded that as the temperature rises the total polyphenolic content (TPC) decreases which ultimately leads to an increase in the virus concentration in prunus necrotic ringspot virus (PNRSV) infected peach trees whereas healthy tree showed no such effect of temperature on the concentration of PNRSV.

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