alpha-Tocopherol alteration of soybean antiherbivory to Trichoplusia ni larvae.

Reference Report for IND93027022

Title:	alpha-Tocopherol alteration of soybean antiherbivory to Trichoplusia ni larvae.
Authors:	Neupane, F.P., Norris, D.M.
Source:	J. Chem. Ecol. 1991, 17(10):1941-1952
Abstract:	The antioxidant vitamin E, alpha-tocopherol, was tested as a candidate elicitor of alterable antiherbivory in soybean plants against cabbage looper larvae. Although a nonspecific antioxidant, vitamin E proved elicitory to the involved sulfhydryl-dependent receptor-energy transducer protein in soybean plasma membrane. Effects of alpha-tocopherol were dependent on dosage, time, and space in the plant. The observed elicited effects were all decreases in herbivory. The best negative phytochemical correlate of looper feeding was the percentage of increased total HPLC peak area of extractables from elicited as compared to nonelicited leaves. Some specific compounds, e.g., glyceollins, were quantitatively major components of the total profile of secondary metabolites.

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