CaDIR1 Gene Regulates the Drought Stress Response in PepperMay 10, 2017
Drought stress limits plant growth and development, leading to a reduction in crop productivity. Previously, several E3 ligases have been reported to regulate the drought stress response. Hyunhee Joo and Chae Woo Lim from Chung-Ang University in South Korea now reveal that the pepper (Capsicum annuum) Drought Induced RING type E3 ligase 1, CaDIR1, regulates the drought stress response via abscisic acid (ABA)-mediated signaling.
CaDIR1 contains a C3HC4-type RING finger domain in the N-terminal region, which functions during protein degradation via attachment of ubiquitins to the target proteins. The expression levels of the CaDIR1 gene were found to be suppressed by ABA and were induced by drought stress. The team conducted genetic studies to examine the function of CaDIR1 in response to ABA and drought stress.
CaDIR1-silenced pepper plants displayed a drought-tolerant phenotype while CaDIR1-overexpressing Arabidopsis plants exhibited an ABA-hypersensitive phenotype during the germination stage, but an ABA-hyposensitive phenotype exhibit this during the adult stage. Moreover, adult CaDIR1-overexpressing plants also exhibited a drought-sensitive phenotype.
These results indicate that CaDIR1 functions as a negative regulator of the drought stress response via ABA-mediated signaling.
For more on this study, read the full article in Frontiers in Plant Science.
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
- ISAAA Presents 2016 Annual Report on GM Crops Adoption in Beijing
- Kenyan Maize and Cotton Farmers Petition for Bt Maize and Bt Cotton Seeds
- International Consortium Releases Barley Genome Sequence
- Study Finds Unexpected Strategy to Delay or Reverse Evolution of Resistance by Pests to GM Crops
- Brazil Leads the Developing Countries in GM Crop Adoption
- US Gov't Plans to Counter ‘Misinformation' on Agri-biotech Products
- In Future Climates, Modified Soybeans Yield More
- Wheat Multipathogen Resistance Gene Confers Anthracnose and Rust Resistance in Sorghum
- CaDIR1 Gene Regulates the Drought Stress Response in Pepper
Beyond Crop Biotech
- US FDA Approves DIY Genetic Test Kit
- Tea Tree Genome Reveals Insights on Its Flavor, Evolution of Caffeine Biosynthesis
- Pioneering Women in Sustainable Agriculture and Food Biotechnology
- Engineering Our Food: A Discussion of Genetically Modified Foods
- Watch the First Commercial Arctic® Apple Trees Being Planted
- Development of Canker-Resistant Citrus through CRISPR-Cas9 Editing of Susceptibility Gene Promoter
Read the latest:
- Biotech Updates (May 24, 2023)
- Gene Editing Supplement (May 24, 2023)
- Gene Drive Supplement (February 22, 2023)
Subscribe to BU: