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Induction of Salicylic Acid in Cucumber against ZYMV Potyvirus by some Nutrient Chemicals

Induction of Salicylic Acid in Cucumber against ZYMV Potyvirus by some Nutrient Chemicals

M.A. Abo-EInasr l, Kh.A. EL-Dougdougl, M.H. El-Kattan2 and L.A. Salem2

1 Department of microbiology (Virology Lab.), Faculty of Agriculture, Ain Shams
University, Shubra El-Kheima, Cairo. Egypt.
2 Biological Agriculture Research Department, Central Laboratory for Agricultural Climate, Agriculture Research Center (ARC), Egypt.

ABSTRACT

Systemic acquired resistance (SAR) could be induced in cucumber plants using different concentrations of seven nutrient chemicals against Zucchini yellow mosaic Potyvirus (ZYMV). These chemicals were. Potassium sulfate, Magnesium sulfate, Ammonium sulfate, Chelated iron, Chelated zinc, Chelated manganese, and salicylic acid. SAR was determined via disease severity. virus concentration and some biochemical changes i.e., the high level of endogenous salicylic acid, proteins related to inducers and activity of peroxidase and chitinase enzymes. Salicylic acid (0.5%) and potassium sulfate (3%) gave the highest effect in inducing SAR. where the treatment with them had forbid disease symptoms, and virus concentration was (0), 25 days post inoculation. In addition, the biochemical changes reached to the maximum values. whereas other chemicals gave a medium ability to induce SAR and gave varied values.

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Journal of Virological Sciences

July

Vol. 3, Iss. 1

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