Blast Resistance Gene Pi54 Activates Complex Defense Action in Rice
January 20, 2012| |
One of the biotic stresses that affect rice production is the fungus Magnaporthe oryzae, the rice blast pathogen. Several rice blast resistance genes have been identified and characterized however none of them have shown resistance in all strains of M. oryzae. Santosh Kumar Gupta from the Indian Agricultural Research Institute and colleagues conducted microarray analysis to further understand the expression of Pi54 gene which confers high degree of resistance to the different strains of M. oryzae in transgenic rice (Taipei 309).
A total of 1154 differentially expressing genes were identified in the transgenic rice. Various defense response genes, such as callose, laccase, PAL, and peroxidase, and genes related to transcription factors like NAC6, Dof zinc finger, MAD box, bZIP, and WRKY were found to be up-regulated in the transgenic line. The activities of six plant defense response enzymes were found to be significantly high in the transgenic plant at different stages of inoculation by the pathogen. They also noted elevated levels of phenolic compounds, which are involved in disease response pathways.
Based on the various changes in the compounds involved in disease defense pathways, Pi54 activates a complex defense mechanism in rice.
Read the abstract at http://jxb.oxfordjournals.org/content/63/2/757.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
- CGIAR Launches Two Research Programs on Global Food System
- FAO-EC Project to Promote Climate-Smart Farming
- FAO Food Price Index Ends Year with Sharp Decline
- New Seed Varieties Approved in Tanzania
- Scientists Tweak Photosynthesis for Better Biofuel
- PBL Awarded Pioneering US Patent on RNAi
- New Tool for Cleaning Up Soils and Waterways: Prickly Pear
- Joint US/Japan Project for Better Biofuels
- Weed Suppressing Wheat Put to Test in WA Trials
- Effective Stress Tolerance Through Biotech, Says Bangladesh Food Minister
- Intelligence and Emotions Influence Acceptability of GMO
- Nourishing Gene in Plants for Improvement of Seed Productivity
- Spanish Farmers Continues to Plant GM Corn in 2012
- Research Project Aims to Make the Potato Plant as Energy Fit
- Breeding Better Grasses for Food and Fuel
- French High Council of Biotechnology Confirms Threshold of 0.1% Adventitious Presence Impractical
- Plants: Heritable Disease Resistance
-
Research Highlights
- Bt Maize Line Have No Effect on Endophyte Communities
- Blast Resistance Gene Pi54 Activates Complex Defense Action in Rice
- Effect of Biotech Soybean Planted Field on Succeeding Crops
-
Beyond Crop Biotech
- Blood Parasite's Genome Decoded
- New Computational Technique for DNA sequencing
- Genes Influence Intelligence Maintenance
- Shangool and Mangool Soon to Help Hemophilia Patients
-
Announcements
- Indian Seed Congress 2012
- 16th International Symposium of the International Society for Tropical Root Crops
- Applications Sought for Borlaug International Agricultural S &T Fellowship Program 2012
-
Read the latest: - Biotech Updates (May 7, 2025)
- Gene Editing Supplement (April 30, 2025)
- Gene Drive Supplement (February 22, 2023)
-
Subscribe to BU: - Share
- Tweet