Effect of Bt-Corn Hybrids on Deoxynivalenol Content in Grain at Harvest

Plant Disease
Arthur W SchaafsmaL Illincic-Tamburic

Abstract

Concentrations of the mycotoxins deoxynivalenol (DON) and fumonisin B1 in grain were compared among Bt-transformed corn hybrids and their non-Bt isolines on 102 commercial corn fields across Ontario from 1996 to 1999. Intensities of naturally occurring populations of Ostrinia nubilalis were assessed from tunneling measurements in the stalks of non-Bt isolines in 1996 and 1997. Mean concentrations of fumonisin B1 across hybrids were <0.25 μg g-1 in every year of the study. Relationships between the concentration of fumonisin B1 and intensity of O. nubilalis or with the use of Bt corn hybrids could not be determined because the concentrations of fumonisin B1 were below the lower limit of detection in most fields (<0.1 μg g-1). However, DON was more prevalent with mean concentrations across fields from 0.42 μg g-1 in 1997 to 1.12 μg g-1 in 1999. The effect of Bt hybrids on reducing concentrations of DON was mainly dependent on the intensity of O. nubilalis in each field. Where a high intensity (stalk injury) of O. nubilalis was observed (>4 cm of tunnel per stalk in the non-Bt), the use of Bt hybrids reduced concentrations of DON by an average of 59% from concentrations in the non-Bt isoline. Where the intensity of O. nubilalis wa...Continue Reading

Citations

Nov 8, 2008·Critical Reviews in Food Science and Nutrition·Artemis Dona, Ioannis S Arvanitoyannis
Sep 1, 2020·Journal of Economic Entomology·Yasmine FarhanArthur W Schaafsma
May 6, 2003·Annual Review of Phytopathology·Gary P Munkvold
Jun 24, 2004·Risk Analysis : an Official Publication of the Society for Risk Analysis·Felicia Wu
Apr 26, 2011·Annual Review of Phytopathology·Saori Amaike, Nancy P Keller
Mar 17, 2018·Journal of Economic Entomology·Jocelyn L SmithArthur W Schaafsma
Feb 1, 2010·Mycotoxin Research·Patrick F Dowd, Eric T Johnson
Jun 26, 2012·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·E D van AsseltH J van der Fels-Klerx
May 10, 2016·Pest Management Science·Nicole S ParkerChristian H Krupke
Apr 24, 2018·Journal of Agricultural and Food Chemistry·Victor Limay-Rios, Arthur W Schaafsma
Mar 5, 2004·Journal of Agricultural and Food Chemistry·Bruce G HammondJohn L Richard

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