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ARS Home » Midwest Area » Peoria, Illinois » National Center for Agricultural Utilization Research » Crop Bioprotection Research » Research » Publications at this Location » Publication #373951
Research Project: Development of Production and Formulation Technologies for Microbial Biopesticides in Conjunction with the Development of Attractants and Repellents for Invasive Insect Pests

Location: Crop Bioprotection Research

Title: Determination of ferulated sugars with activity against insect and fungal pests of maize

Author
item Dowd, Patrick
item Berhow, Mark
item Vermillion, Karl
item Johnson, Eric

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/9/2020
Publication Date: 8/17/2020
Citation: Dowd, P.F., Berhow, M.A., Vermillion, K., Johnson, E.T. 2020. Determination of ferulated sugars with activity against insect and fungal pests of maize. Meeting Abstract. [abstract].

Interpretive Summary:

Technical Abstract: Mechanisms of leaf and kernel resistance in sorghum and maize have been extensively investigated, but less information is known about stalk resistance mechanisms. Pith from low lignin mutant bmr6 of sorghum caused much higher mortality of corn earworms and fall armyworms compared to pith from wild type plants. Freeze dried pith was extracted with methanol and fractionated. Multiple fractions had activity against insects. LC-ESI-MS characterization indicated that glucose and sucrose derivatives of ferulate, which were sometimes acetylated, were the principle components, but positive identity could not be determined. Large scale fractionation and purification followed by NMR was used to further characterize the components in the active fractions. Further activity against insects and plant pathogens was determined. Representative maize lines with varying stalk resistance to insects and plant pathogens were also examined for these compounds.