CRISPR-edited Rice Plants Get Major Boost in Grain YieldMay 23, 2018
A research team from Purdue University and the Chinese Academy of Sciences has developed a rice variety that produces 25-31 percent more grain using CRISPR-Cas9 gene editing technology.
The team, led by Jian-Kang Zhu, professor in the Department of Horticulture and Landscape Architecture at Purdue and director of the Shanghai Center for Plant Stress Biology at the Chinese Academy of Sciences, made mutations to 13 genes associated with abscisic acid, known to play roles in plant stress tolerance and suppression of growth. From the varieties that were developed, one variety exhibited a little change in stress tolerance, but produced 25% more grain in a field test in Shanghai, China, and 31% more in a field test conducted on China's Hainan Island.
The researchers silenced suites of pyrabactin resistance 1 (PYR1)/PYR1-like (PYL)/regulatory components of ABA receptor (ACAR) genes, or simply, PYL genes. These genes enhance tolerance of abiotic stresses, such as drought, soil salinity, and other environmental factors, but also inhibit growth. Knocking out one gene in the PYL family might not have much effect on stress tolerance or growth since redundant genes can provide a similar function. A specific knockout combination, however, led to a variety that uses just the right redundancies to hold onto its stress-tolerance characteristics but reduces the growth inhibition.
The improved rice plants came from a common research line. The team's next step is to to use CRISPR-Cas9 to edit the same genes in elite varieties of rice to determine if those will also show improved yields.
For more details, read the Purdue University Agriculture News.
The Crop Biotech Update is a weekly newsletter of ISAAA, a non-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
- Farmers and Experts Look Forward to Bt Cotton Adoption to Revive Textile Industry in Kenya
- Study Explains How Pathogen Proteins Work Together to Attack Plants
- Plant Peptide Plays a Role in Salt Stress Tolerance
- Legislators Bat for the Advancement of Agri-biotech in PH
- GM Meets GE in Camelina Field Trials
- Spanish Scientists Find Crop Genes to Adapt to Climate Change
- Study Says GM Potato Can Help Cut Pesticide Use by Up to 90%
- Lack of 'Happiness' Hormone Makes Rice Plants Less Attractive to Insects
- OsMTP11 Gene Regulates Magnesium Transport and Homeostasis in Rice
- OXI1 Kinase Involved in Aphid Resistance in Arabidopsis
- Researchers Find Potential Gene for Enhancing Oil Content of Canola
Plant Breeding Innovations
- CRISPR-edited Rice Plants Get Major Boost in Grain Yield
- CRISPR-Cas9 Used to Knock Out Genes in Robusta Coffee
- Researchers Test TALEN Genome Editing on Peanut
- Argentine Scientists Develop Non-Browning Potatoes Using CRISPR
Beyond Crop Biotech
- Therapeutic Nanoparticles Could Help Save Sickly Crops
- Green Tissue-Specific Promoters Used to Alter Lignin Production in Switchgrass
- Biotechnology Conference 2018
Subscribe to CBU: