Transgenic Sweet Corn Found Not More Susceptible to Goss's Wilt DiseaseFebruary 24, 2016
Transgenic crops expressing resistance to the herbicide glyphosate (GR) have been commercialized and planted widely across the U.S. for two decades. Claims have been made that glyphosate and transgenic traits have made corn plants more susceptible to crop diseases, linking the rise of corn diseases like Goss's wilt, which causes leaf blight and systemic wilt, to the adoption of transgenic corn across the U.S.
However, a new study from the USDA-Agricultural Research Service (ARS) provides empirical evidence showing no increase in disease susceptibility in transgenic sweet corn treated with glyphosate.
The team tested a fresh-market sweet corn hybrid varying in the absence or presence of the GR+Bt transgenes. Both sweet corn lines were inoculated with the bacterium that causes Goss's wilt before or after a label-standard glyphosate application.
Approximately one-half of the inoculated plants developed symptoms of Goss's wilt, regardless of the presence or absence of transgenic traits. Moreover, the timing of disease inoculation with respect to glyphosate application also did not influence Goss's wilt incidence or severity.
The application of glyphosate to the transgenic line actually increased yield compared to plants not treated with the herbicide. Yield measures included marketable ear number, marketable ear mass, and kernel mass.
The explanation may be hormesis, in which plant growth is stimulated as a result of a low, sub-lethal dose of a toxin and has been observed in glyphosate-treated plants in other studies.
Learn more at the University of Illinois at Urbana-Champaign website.
The Crop Biotech Update is a weekly newsletter of ISAAA, a non-for-profit organization. The CBU is distributed for free to over 23,000 subscribers worldwide to inform them about the key developments in biosciences, especially in agricultural biotechnology. Your support will help us in our mission to feed the world with knowledge. You can help by donating as little as $10.
See more articles:
News from Around the World
- Plant Scientists: GM Technology to Help Meet Food Supply Demands
- NEPAD's ABNE Organizes African Study Tour to India
- New Device may Speed Up DNA Insertion into Bacteria
- Transgenic Sweet Corn Found Not More Susceptible to Goss's Wilt Disease
- New Genetic Advancements in Wheat Aimed Towards Enhancing Yield
- Biotechnologist Mohapatra to Lead Indian Council of Agriculture Research
- Plant Parts 'Talk' to One Another for Metabolism and Growth
- Immunity Gene Fusions Discovered in Plants
- Effect of Long-Term Cropping of Transgenic Soybean on Soil Microbiome
- SaHMA3 Functions in Cadmium Hyperaccumulation and Tolerance of Sedum alfredii
- Brassica ERD4 Gene Enhances Growth, Salt and Drought Tolerance in Arabidopsis
Beyond Crop Biotech
- Genetic Code of Pigs Altered to Tackle Deadly Virus
From the BICs
- Kenya's National Biosafety Boards Assessed Its Biotech Capacity through a Study Tour
- IRBC07 – ICBB05 (Back-to-Back International Conferences)
- 5th International Conference and Exhibition on Metabolomics
- 3rd Plant Genomics Congress: Asia
Subscribe to CBU: