Researchers Analyze the Function of TaGW2 Genes in Wheat Grain TraitsJune 6, 2018
The GW2 gene is emerging as a key determinant of grain weight in cereal crops. In hexaploid wheat (Triticum aestivum), it has three homoeologs, TaGW2-A1, -B1, and -D1. The team of Yi Zhang from the Chinese Academy of Sciences analyzed the CRISPR-edited mutants that lack one, two, or all three homoeologs of TaGW2 to gain insights into the functions of TaGW2 in wheat grain traits.
Both TaGW2-B1 and -D1 affect the thousand-grain weight (TGW) by influencing grain width and length, but the effect conferred by TaGW2-B1 is stronger than that of TaGW2-D1. There is also a functional interaction between the TaGW2 homoeologs since the TGW increase shown by a double mutant (lacking B1 and D1) was substantially larger than that of their single mutants.
TaGW2-B1 and -D1 were also found to modulate cell number and length in the outer pericarp of developing grains, with TaGW2-B1 being the more potent one. TaGW2 homoeologs also affect grain protein content as this was generally increased in all mutants, especially in the double and triple mutants. Moreover, flour protein content and gluten strength were also elevated in the mutants.
These data provide insights on the functions of the TaGW2 homoeologs in the genetic control of grain weight and protein content traits in common wheat. This may accelerate research on this important gene and its application in wheat improvement.
For more information, read the article in The Plant Journal.
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
- World Seed Congress Highlights Industry's Mission to Unlock the Power of Genetics
- Malawi Releases New Seed Policy
- Journalists Urged to Do Quality Reporting on Science and Technology
- Ethiopia Approves Environmental Release of Bt Cotton and Grants Special Permit for GM Maize
- Scientists Use Big Data to Map Corn's Response to Heat Stress
- Indian Farmers Use Whatsapp and Facebook to Demand GM Seeds
- ICRISAT and NRGene Make Chickpea and Pigeonpea Reference Genome Data Available
- Report Shows Costs of Chinese Delays on Biotech Crop Approvals
- European and French Studies Disprove Seralini's GM Maize Claims
- Transgenic Cotton Allows Selective Fertilization for Weed Control
- Scientists Engineer Safflower to Produce Healthier Oil
- Scientists Discover the Role of Isopentenyltransferase in Lycopene Synthesis in Tomato
- The Promise of Genome Editing Tools to Advance Environmental Health Research
- Transcription Factor Controlling Production of Secondary Cell Walls Found in Rice
- Chinese Scientists Develop Fungus-Resistant Cotton
- Researchers Analyze the Function of TaGW2 Genes in Wheat Grain Traits
- CRISPR-Mediated Editing of Rice False Smut Fungus
Read the latest:
- Biotech Updates (February 21, 2024)
- Gene Editing Supplement (February 14, 2024)
- Gene Drive Supplement (February 22, 2023)
Subscribe to BU: