Salk Scientists Uncover Gene for Iron Tolerance in PlantsSeptember 4, 2019
Elevated soil iron levels cause direct cellular damages in plants such as rice. Excess iron harms fats and proteins and decreases the ability of roots to grow. However, some plants have inherent tolerance to high iron levels. The scientists tested a number of Arabidopsis strains, to observe if there was natural variation in iron resistance. Some of the plants showed tolerance to iron toxicity, so the researchers used genome-wide association studies (GWAS) to locate the responsible gene. Their analyses identified the gene GSNOR as the key to enabling plants and roots to grow in iron-heavy environments.
The researchers also found that iron tolerance is related to the activities of nitric oxide, a gaseous molecule which plays a role in plant response to stress. High levels of nitric oxide induced cellular stress and impaired the plant roots' tolerance for elevated iron levels. The researchers observed this occurred when plants did not have a functional GSNOR gene and concluded that GSNOR likely plays a central role in nitric oxide metabolism and regulates the plants' ability to respond to cellular stress and damage.
For more details, read the article in Salk News.
You might also like:
- Research Groups Discover How Plants Cope with Iron Deficiency
- Iron-rich GM Wheat Set to Undergo Field Trials
- Biofortified Cassava Shows Higher Levels of Iron
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
- US, Highest Producer of Biotech Crops in 2018, Gov't Support Vital
- Declaration to Establish African Coalition on Genome Editing Communication Adopted
- NZ's Environmentally Sustainable Ryegrass for Livestock Makes Steady Progress in the Field
- Philippines Among Top Biotech Crop Adopters in Asia-Pacific, 2018 ISAAA Report Reveals
- Scientists Discover Gene for Drought Resistance in Barley
- Researchers Discover Gene to Help Produce Fatter and Oilier Seeds
- Salk Scientists Uncover Gene for Iron Tolerance in Plants
Plant Breeding Innovations
- Bidirectional Promoter Based CRISPR-Cas9 System Developed for Genome Editing in Plants
- New Cloning System Allows Development of Transgene-free Edited Crops
Beyond Crop Biotech
- Forestry Organizations Should Lift Ban on GM Trees, Scientists
Subscribe to CBU: