Researchers Develop Dwarf Maize with Better Yielding Capacity by Controlling Gibberellin LevelsOctober 23, 2019
Chinese researchers transformed Arabidopsis AtGA2ox1 gene into maize with the goal of developing a height-reduced GM maize. Dwarf cultivars of wheat and rice have helped increase global production, thus, developing dwarf maize could be a promising strategy to boost production. The most direct and effective dwarfing technique used was controlling gibberellin (GA) levels of crops.
The researchers transformed AtGA2ox1 into maize and results showed that the transgenic maize plants with the most reduced plant height had 74% reduction in GA level, and by approximately two-fold increases in both chlorophyll content and root/shoot ratio compared to the non-transformed plants. Furthermore, the stem cells of the GM maize were found to be condensed, with deformed vascular bundles. Two-season field trials showed improved harvest index (9-7%) and grain yield (10-14%) compared to the non-GM maize.
Based on the findings, controlling the GA level could be an effective technique in altering maize architecture and grain yield. Read more findings in Transgenic Research.
You might also like:
- Semi-dwarf Rice Developed by CRISPR-Cas9-directed Mutagenesis of OsGA20ox2
- Dwarf Phenotype Enables Growth of More Plant Factories in a Given Space
- Overexpression of Dwarf Gene Enhances Photosynthetic Capacity of Tomato
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 $10.
See more articles:
News from Around the World
- Biotech Crop Area Reaches 2.5 Billion Hectares in 23 Years
- Genetic Engineering Helps Increase Availability of Improved Organic Seeds
- Secrets to Insect Adaption to Climate Change Uncovered in the European Corn Borer Moth
- First Argentine GM Potato to be Released in 2020
- PABIC, University of Agriculture Faisalabad Conduct Seminar to Assess Food Security, Malnutrition, and Biotech in Pakistan
- Partnership and Innovation for Food and Economic Security and Environmental Security for the Region
- Australian Scientists Develop New Method to Produce Drought-Resilient Wheat Quickly, Cheaply, and Accurately
- Researchers Develop Dwarf Maize with Better Yielding Capacity by Controlling Gibberellin Levels
- GM Soybean with Cry8-like Gene Exhibit Resistance to Insect Pest
Plant Breeding Innovations
- Scientists Highlight Responsible Advancement, Safe Use of Synthetic Biology
- North America Genome Editing Market Projected to Reach US$ 4,000 Mn by 2025
Read the latest:
- Crop Biotech Update (September 21, 2022)
- Genome Editing Supplement (September 21, 2022)
- Gene Drive Supplement (August 31, 2022)
Subscribe to CBU: