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United States Department of Agriculture

Agricultural Research Service

Research Project: ENHANCED INSECT RESISTANCE AND CROP MANAGEMENT FOR REDUCTION OF MYCOTOXINS IN MIDWEST CORN Title: Allelar sequences, substrates, and insect resistance conferred by a maize anionic peroxidase

Authors
item Dowd, Patrick
item Johnson, Eric
item Pinkerton, Terrence

Submitted to: National Entomological Society of America Annual Meeting
Publication Type: Abstract Only
Publication Acceptance Date: December 12, 2007
Publication Date: December 9, 2008
Citation: Dowd, P.F., Johnson, E.T., Pinkerton, T.S. 2008. Allelar sequences, substrates, and insect resistance conferred by a maize anionic peroxidase [abstract]. National Entomological Society of America Annual Meeting. Abstract No. D0672.

Technical Abstract: Sequencing of a peroxidase gene identified through genetic and electrophoretic studies as Px11 from representative maize inbreds indicated several “silent” changes plus the presence of an additional codon in some lines. The sequence changes influenced the relative activity towards ferulic vs. coumaric acid. Expression of a representative clone in maize callus conferred more rapid browning and enhanced insect resistance to Helicoverpa zea and Spodoptera frugiperda as indicated by smaller weights of individuals feeding on the peroxidase transformed callus compared to beta-glucuronidase expressing transformant control callus.

Last Modified: 11/23/2014
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