The Role of OsMADS3 in Regulating Meristem Maintenance in RiceSeptember 6, 2017
Meristems such as the shoot apical meristem and flower meristem (FM) act as a reservoir of stem cells. In rice (Oryza sativa), the FLORAL ORGAN NUMBER2 (FON2) gene is involved in meristem maintenance. In fon2 mutants, the numbers of floral organs are increased due to an enlargement of the FM. To identify new factors regulating meristem maintenance in rice, researchers from the University of Tokyo in Japan studied the 2B-424 rice line, a fon2 mutant with increased pistil number.
Researchers found that the 2B-424 line had a complete loss-of-function mutation in OsMADS3, a gene that is known to be involved in stamen specification. Using CRISPR-Cas9 technology, the team disrupted OsMADS3 in the fon2 mutant, causing a flower phenotype similar to that of 2B-424. This confirms that the gene responsible for enhancement of fon2 was OsMADS3.
Morphological analysis revealed that the fon2 and osmads3 mutations both simultaneously affected pistil development. These findings suggest that OsMADS3 is also involved in FM activity in early flower development.
For more information, read the article in Plant and Cell Physiology.
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
- Policy Reforms Key in Biotech/GM Crops Adoption in Africa
- Researchers Explore New Source of Virus Resistance in Wheat
- South American Agriculture Ministers Urge EU & China to Stop Delaying GMO Import Authorizations
- Study Gives Insights into Plants' Light Harvesting Process Under Low Light
- Davao's Vegetable Council Backs Commercial Planting of Bt Eggplant in the Philippines
- APEC: Biotechnology Powerful Tool for Sustainable Agriculture
- RNAi Increases Soybean's Resistance to Viral Pathogens
- OsMYB45 Plays a Vital Role in Cadmium Stress Resistance in Rice
Plant Breeding Innovations
- The Role of OsMADS3 in Regulating Meristem Maintenance in Rice
- CRISPR-Cas9 Genome Editing in MicroRNA of Rice
Beyond Crop Biotech
- Scientists Develop New Approach to Protect Honey Bees
- Expression of Aflatoxin-Detoxifizyme in the Parotid Gland of Transgenic Pigs
From the BICs
- Conference on Biotech Applications Held in Phu Yen, Vietnam
- New ISAAA Pocket K on Biotech-improved Animals
- Updated ISAAA Infographics on Biotech Crops Now Available
Read the latest:
- Crop Biotech Update (September 28, 2022)
- Genome Editing Supplement (September 21, 2022)
- Gene Drive Supplement (September 28, 2022)
Subscribe to CBU: