Developing DNA Markers of Rice Blast Resistance Gene Locus
May 21, 2010| |
Rice blast caused by the fungal pathogen Magnaporthe oryzae is one of the major problems in rice production all over the world. The use of host resistance is still the most efficient method for disease management. Many resistance (R) genes have been identified and one of which is the Pi-km. To facilitate rice breeding programs, Stefano Costanzo and Yulin Jia of the U.S. Department of Agriculture Agricultural Research Service developed a Pi-km specific DNA marker using 15 US rice cultivars. Based on the DNA sequence analysis and computational translation conducted, the researchers found six alleles within the Pi-km locus. Moreover, artificial blast inoculations with some rice cultivars exhibited high levels of sequence polymorphism of the blast isolates which are associated with specific Pi-k genes. Such occurrence introduces new insight about the complex characteristic of the R gene locus, which may greatly affect the recognition of the pathogen-encoded signalling substances for defense reaction.
For more details, view the abstract at http://dx.doi.org/10.1016/j.plantsci.2010.02.014.
| |
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
- Economic Crisis Threatens Agriculture in Europe and Asia
- BREAD Grants for Basic Agricultural Research
- Kenya Launches National Biosafety Authority Board
- Biosafety Law Translated in Local Languages of Burkina Faso
- Soil Bacteria and Fungi as Effective Bio-fertilizers
- Peruvian Scientist Gets Appeal from Supreme Court
- FDA Oks Use of Vistive Gold Soybean Oil
- Scientists Release Biocontrol for Waterhyacinth
- Implementing Holistic Food Policies: Strategy for Improving National Security
- Aphid's Chemical Signals as Biocontrol Agent Against Itself
- Panel Discussion about Public Perceptions on Adoption of Agri Biotech
- Monsanto Donates Seeds to Haiti
- Chinese Scientists Complete First Multi-crop Large-scale Evaluation of GM Ecological Impacts
- Social Responsibility in Promoting Transgenics
- New CIAT-HarvestPlus Office Inaugurated in India
- EFSA Oks GM Maize Varieties
- Optimal Ecology of Bioinsecticide
-
Research Highlights
- Effects of Bt Corn on the Reproduction of Non-target Pest Corn Leafhopper
- Biological Clock Controls Carbohydrate Metabolism in Arabidopsis at night
- Developing DNA Markers of Rice Blast Resistance Gene Locus
-
Announcements
- International Seminar on Horticulture to Support Food Security 2010
- ISAAA Releases Two New Videos on "Biotech Agriculture"
- BioLatina 2010 in Buenos Aires, Argentina
- International Biotech Seminar and the 5th KBI Congress 2010
- TERI-ITEC Biosafety Training Program for African Nationals
- CBU Feedback Survey
-
Read the latest: - Biotech Updates (April 16, 2025)
- Gene Editing Supplement (April 16, 2025)
- Gene Drive Supplement (February 22, 2023)
-
Subscribe to BU: - Share
- Tweet