Host-Induced Gene Silencing Reduced Aflatoxin in MaizeJuly 1, 2015
Infestation of crops by aflatoxin-producing fungi results in economic losses as well as negative health effects. Currently, control strategies against aflatoxin accumulation are not effective for small farms in Africa causing widespread aflatoxin exposure. A strategy called host-induced gene silencing holds great potential for developing aflatoxin-resistant plant germplasm.
The team led by Amos Emitati Alakonya, a researcher from Jomo Kenyatta University of Agriculture and Technology in Kenya, transformed maize with a hairpin construct targeting the aflatoxin biosynthesis transcription factor aflR. The transgenics were then challenged with an Aspergillus flavus strain.
Results reveal that aflR was downregulated in A. flavus-colonizing the transgenic maize. Furthermore, maize kernels from transgenic plants accumulated significantly lower levels of aflatoxins than wild type plants. However, transgenic maize exhibited stunting and reduced kernel placement. Results indicate that host-induced gene silencing has potential in developing aflatoxin-resistant germplasm.
For more information on the study, read the full article on Plant Cell Reports.
See more articles:
News from Around the World
- Tanzania Deputy Minister for Agri Advocates Adoption of Biotech in Agriculture
- Scientists Find New Tool for Pathogen to Pillage Plants
- Canadian Government Ratifies International Treaty on Plant Variety Protection System
- PhilRice Develops Method for Rice Viral Infection Detection
- Australian Farmers Planting More GM Canola
- Gene Associated with Morphine Production in Poppy Plant Discovered
- Rothamsted Research Releases Results of GM Wheat Field Trials
- Identification of Powdery Mildew Susceptibility Genes in Solanaceae Plants
- Host-Induced Gene Silencing Reduced Aflatoxin in Maize
- Mechanism Involved in Drought Response of Arabidopsis thaliana Identified
Beyond Crop Biotech
- Researchers Discover How Petunias Know When to Smell Good
- Gene Controls Behavioral Changes During Warmer Temperatures
From the BICs
- Journalists Applaud Increased Engagement with Agricultural Scientists
- Agriculture Boot Camp for Miss Uganda Contestants 2015/16
- Video: Where Do Farmers Get their Seeds?
Subscribe to CBU: