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Article citations


Dowd, P.F. (2000) Indirect Reduction of Ear Molds and Associated Mycotoxins in Bacillus thuringiensis in Corn under Controlled and Open Field Conditions: Utility and Limitations. Journal of Environmental Entomology, 93, 1669-1679.

has been cited by the following article:

  • TITLE: Investigating Transgenic Corn Hybrids as a Method for Mycotoxin Control

    AUTHORS: Hamed K. Abbas, Nacer Bellaloui, H. Arnold Bruns

    KEYWORDS: Stacked-Gene Corn, Hybrids, Soil Type, Mycotoxins, Aflatoxin, Fumonisin

    JOURNAL NAME: Food and Nutrition Sciences, Vol.7 No.1, January 26, 2016

    ABSTRACT: Transgenic Bt corn hybrids have been available for more than 10 years and are known to control specific insects. More recently, so-called “stacked-gene” hybrids, have been released with multiple insect resistance genes and genes for herbicide resistance, resulting in up to 6 traits per plant. Because insect damage can lead to increased levels of mycotoxins, such as aflatoxins and fumonisin, we designed a study to compare ten commercially available corn hybrids, two non-transgenic, four with both herbicide and insect tolerance (stacked-gene) and four with glyphosate tolerance only to determine if any hybrid class had the advantage of reduced mycotoxin contamination. The experiment was carried out in the Mississippi State University Delta Research Extension fields in Stoneville, MS for two years in fine sandy loam and clay soil. Rows were either inoculated at the V10 stage of growth with toxigenic Aspergillus flavus K54 (NRRL 58987, isolated from corn kernels in Mississippi), grown on wheat, and applied at a rate of 22.42 kg/ha or allowed to become naturally infected with disease-producing fungi, including various Fusarium and other Aspergillus spp. Mycotoxin production differed according to the soil type with lower levels detected in the hybrids planted in clay soil vs. sandy soil. However, no significant differences in mycotoxin production were found amongst the hybrid classes. More research is needed to identify conditions under which transgenic hybrids might produce higher yields and lower mycotoxin levels. Presently, selection of transgenic hybrids will not replace integrated strategies of biocontrol, host plant resistance, or good crop management practices for achieving adequate mycotoxin control in corn.