Potassium Transport Gene in Soybean Enhances Its Resistance to Soybean Mosaic VirusJune 11, 2014
Potassium is the most abundant inorganic solute in plant cells and is involved in plant responses to abiotic and biotic stresses. Previous studies have shown that altering the level of potassium can reduce the spread of viral diseases. Thus, potassium transporters are leading targets for breeding for virus resistance, including soybean mosaic virus (SMV), the most prevalent viral disease in soybean.
Addition of potassium fertilizer was found to significantly reduce SMV incidence. Upon analysis, the gene GmAKT2 was significantly induced by SMV inoculation in resistant varieties but not in susceptible varieties. Transgenic soybean overexpressing GmAKT2 were also generated and evaluated. Significant increase in potassium concentrations was observed in young leaves of the transgenic soybean. Meanwhile, potassium concentrations in the old leaves of the transgenic plants were lower than in wildtype plants. These indicate that GmAKT2 acted as a potassium transporter and affected the distribution of potassium in soybean plants.
Wildtype plants exhibited severe mosaic symptoms while transgenic plants showed no symptoms of SMV, suggesting that virus development was significantly retarded in the transgenic soybean plants. Overexpression of GmAKT2 enhanced SMV resistance in soybean. Hence, manipulation of potassium transporter expression is a novel molecular approach for enhancing SMV resistance.
To learn more on this study, please visit: http://www.biomedcentral.com/1471-2229/14/154/abstract.
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
- International Organizations Reconfirm Support for Biotech Wheat Commercialization
- Scientists Analyze Citrus Genomes to Produce Resistant Varieties
- Kenyan Governors Call for Lifting of GMO Ban
- Phaseolus Genome Gives Insights into Nitrogen Fixation
- Scientists Show How Bacterial Protein in Aphid Saliva Triggers Plant Defense
- New Website for Fruit Genome Databases
- CCAFS-SEA and Partners Discuss Effective Communication on Climate Change
- A Comparative Study of GMO Labeling in the South Korea, US, and EU
- Australian GM Farmer Wins Landmark Case
- Scientists Uncover Root Mechanism to Boost Crop Performance
- Effect of Excessive UV-B Light on Soybean Plants
- OsMYB103L Regulates Cellulose Synthase Genes and Improves Leaf Shape and Strength in Rice
- Potassium Transport Gene in Soybean Enhances Its Resistance to Soybean Mosaic Virus
- Impact of Virus Resistant GM Wheat on Microbial Community Diversity
Beyond Crop Biotech
- Human Genome Project Gets Protein Equivalent
- Sheep Genome Decoded
- Functional Human Growth Factors Produced from an Insect-Baculovirus System
- International Conference on Asian Food Security
- ISAAA Infomercial: What Do People Say About Biotech?
- Biotech Corn Farmer Story in ISAAA Blog
Read the latest:
- Biotech Updates (February 21, 2024)
- Gene Editing Supplement (February 14, 2024)
- Gene Drive Supplement (February 22, 2023)
Subscribe to BU: