Pathogen-inducible Ta-Lr34res Expression Confers Disease Resistance in BarleyJuly 19, 2017
The Ta-Lr34res gene confers partial, durable, and broad spectrum resistance against several fungal pathogens in wheat (Triticum aestivum). Transgenic barley (Hordeum vulgare) lines expressing Ta-Lr34res showed enhanced resistance against powdery mildew and leaf rust. While the gene is only active at adult stage in wheat, Ta-Lr34res was found to be already highly expressed at the seedling stage in transgenic barley, resulting in severe negative effects on growth.
To solve this, University of Zurich researchers expressed Ta-Lr34res under the control of the pathogen-inducible Hv-Ger4c promoter in barley. The resulting transformants showed strong resistance against leaf rust and powdery mildew. The transformed events also had similar grain production compared to susceptible wild types.
These results showed that negative effects caused by early high expression of Ta-Lr34res can be eliminated by inducible expression without compromising disease resistance.
For more information, read the article in Plant Biotechnology Journal.
The Crop Biotech Update is a weekly newsletter of ISAAA, a not-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
- Scientists Discuss Upcoming Biosafety Law in Egypt
- Ugandan Government Supports Passage of Biosafety Bill
- Scientists Identify Link Between Plant Nitrogen Uptake and Greenhouse Gas Reductions
- Induced Defences in Tomato Plants Cause Cannibalism among Pests
- USDA Urged to Start Over on Proposed Rule to Revamp Biotech Regulation
- International Team Uncovers How Wheat Lost Battle Against Blast
- CSIRO Releases Australia's Food and Agribusiness Roadmap
- Australian OGTR Approves Field Trial of GM Wheat and Barley
- Scientists Discover Plants Use Calcium to Send Internal Warning Signals of Aphid Attacks
- Pathogen-inducible Ta-Lr34res Expression Confers Disease Resistance in Barley
- Ectopic Expression of OsExtensin-like Gene in Rice Enhances Plant Lodging Resistance
Plant Breeding Innovations
- Development of Low-Cesium Rice Plants via CRISPR-Cas
Beyond Crop Biotech
- Harvard Scientists Use CRISPR-Cas to Store Movie Clips in DNA
- Beyond Promises: Facts About Biotech/GM Crops in 2016
- ASTA Launches Plant Breeding Animation Video
Read the latest:
- Crop Biotech Update (August 10, 2022)
- Genome Editing Supplement (August 10, 2022)
- Gene Drive Supplement (July 27, 2022)
Subscribe to CBU: