Scientists Identify New Resistance Gene to Potato Disease that Caused Irish FamineSeptember 23, 2020
Late blight, the most important and most destructive pathogen of potato, was caused by the microorganism Phytophthora infestans. Late blight is the disease that caused the Irish Famine of the 1840s and still one of the most serious threats to potato production that causes significant economic losses globally.
Scientists from the Chinese Academy of Agricultural Sciences and the James Hutton Institute have identified a diploid wild potato with high resistance to P. infestans. They discovered novel R genes in this potato using dRenSeq analysis, and further transcriptional analysis revealed the essential role of multiple signal transduction pathways and secondary metabolic pathways in plant immunity in the wild potato.
"We found that the observed resistance in this wild potato was due to previously uncharacterized novel resistance genes," explained Guangcun Li, one of the scientists involved in the study. "We also discovered that photosynthesis was inhibited to promote the immune response." Photosynthetic inhibition in potatoes is a new discovery. The scientists also found that the physical barrier of leaves was very important. "The leaves of this wild potato are hard and show immunity when inoculated with P. infestans at low concentration," said Li.
For more details, read the open-access paper in Phytopathology.
You might also like:
- Field Trials Reveal Blight Resistant GM Potatoes
- Scientists Discover SWEET Genes to Fight Bacterial Blight
- Scientists Reveal Secrets of Potato Blight
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:
- Research Highlights COVID-19 Impacts on Food Security in Kenya and Uganda
News from Around the World
- FAO Facilitates Agri-food Systems Transformation of Cities Worldwide
- Ugandan Farmers Want Bt Maize to Address Fall Armyworm Challenge
- 10 New Genes Identified for Resistance to Stripe Rust Disease
- Research Team Turns to Wild Crop Relatives in Climate Change Battle
- Scientists Identify New Resistance Gene to Potato Disease that Caused Irish Famine
- Bt Cotton Increased Farmers' Produce by 10-Fold in China
- E. coli Bacteria Offer a Path to Improving Photosynthesis
- Scientists Analyze Whole Genome Sequence of Water Buffalo, Cattle for Domestication Signatures
Plant Breeding Innovations
- CRISPR-Cas9 Reveals Genes Involved in Rice Heading Date
- Transgene-free PDS Mutants in Potato Generated
- TALENs Used for Genome Editing of an Algal Biodiesel Candidate
Subscribe to CBU: