Waterhemp's Mechanisms to Thwart Herbicides UncoveredOctober 23, 2013
Weed science researchers at the University of Illinois have identified two unique mechanisms in waterhemp that enable this weed to tolerate certain herbicides. In a recently concluded study, scientists described two distinct metabolic detoxification mechanisms that confer resistance to mesotrione (Callisto) and atrazine (Aatrex) in a waterhemp population.
Scientists first looked at herbicide target genes in the waterhemp plants but later on proved that these genes have nothing to do with plant's resistance on herbicide. Instead, they discovered that resistance was due to increased metabolism of mesotrione and atrazine—via P450 enzymes for mesotrione and GST enzymes for atrazine. The faster metabolism of these herbicides in waterhemp resembles the natural mechanism in corn, where the P450 enzymes confer tolerance to Callisto.
See the University of Illinois' news release at http://news.aces.illinois.edu/news/researchers-identify-unique-resistance-mechanism-waterhemp-uses-thwart-different-herbicides.
Biotech Updates is a weekly newsletter of ISAAA, a not-for-profit organization. It is distributed for free to over 22,000 subscribers worldwide to inform them about the key developments in biosciences, especially in 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 Breeder Ronnie Coffman Receives Inaugural World Agriculture Prize
- UN Celebrates International Day for the Eradication of Poverty
- ISAAA Launches Infographic on Food and Agri-biotech
- Analysts: Drought Tolerant Maize Has Measurable Impact on African Agriculture
- Scientists Identify Key Genes for Increasing Oil Content in Plant Leaves
- Surprises Discovered in Decoded Kiwifruit Genome
- Plant Health Scientists Reiterate Support for Biotechnology
- Opposition to GMO Labeling Rises Up in Washington
- Waterhemp's Mechanisms to Thwart Herbicides Uncovered
- Study Provides Insight on Genetic Basis of Cucumber Domestication and Diversity
- Bangladesh Has Bumper Harvest from Stress Tolerant Rice Varieties
- FCC Scientists Develop Transgenic Wheat
- Vietnam Farmer's Union and AgBiotech Vietnam Co-organize Seminar on Biotech Crops
- New Batch of Germplasm Duplicates from ICRISAT's Collection Sent to Svalbard Global Seed Vault
- Inventory of Prioritized Crop Wild Relatives Published
- Van Montagu: GMO Resistance in Europe is Purely Emotional
- GE Epsps Gene from Rice Increases Productivity of Weedy-rice Hybrids without Herbicide Application
- Effect of Single and Pyramided Bt Rice on Planthoppers' Responses to Elevated CO2 and Temperature
Beyond Crop Biotech
- Giant Panda's Genes Will Save Them from Extinction
- Scientists Redesign Organism's Entire Genome
Read the latest:
- Biotech Updates (November 29, 2023)
- Gene Editing Supplement (November 29, 2023)
- Gene Drive Supplement (February 22, 2023)
Subscribe to BU: