Plant Parts 'Talk' to One Another for Metabolism and GrowthFebruary 24, 2016
Plant shoot to root communication has been established previously, but little has been understood about the molecular basis of the long-distance shoot-root coordination. A new study conducted by researchers from the University of Oxford and the Chinese Academy of Sciences in China shows that communication is achieved through a moving agent from shoot to root. The agent is a protein known as HY5, a transcription factor that activates, or "switches on" genes.
HY5 was already known to control rates of photosynthesis (CO2 capture) in the shoot, but the study shows that HY5 acts as an agent of communication between shoot and root by moving through the phloem vessels of the plant. HY5 travels from shoot to root, and when it reaches the root it activates a number of genes in root cells, including genes that encode the nitrate transporters that extract nitrate from the soil. This activation is also dependent upon sugars that also travel through the phloem from shoot to root. Thus, movement of HY5 and sugars from shoot to root increases nitrate uptake by the root. Plant breeders can now target HY5 to increase its activity in the roots of shaded crop plants, to improve nitrate uptake from the soil.
For more information, read the article at the University of Oxford Science Blog.
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
- Plant Scientists: GM Technology to Help Meet Food Supply Demands
- NEPAD's ABNE Organizes African Study Tour to India
- New Device may Speed Up DNA Insertion into Bacteria
- Transgenic Sweet Corn Found Not More Susceptible to Goss's Wilt Disease
- New Genetic Advancements in Wheat Aimed Towards Enhancing Yield
- Biotechnologist Mohapatra to Lead Indian Council of Agriculture Research
- Plant Parts 'Talk' to One Another for Metabolism and Growth
- Immunity Gene Fusions Discovered in Plants
- Effect of Long-Term Cropping of Transgenic Soybean on Soil Microbiome
- SaHMA3 Functions in Cadmium Hyperaccumulation and Tolerance of Sedum alfredii
- Brassica ERD4 Gene Enhances Growth, Salt and Drought Tolerance in Arabidopsis
Beyond Crop Biotech
- Genetic Code of Pigs Altered to Tackle Deadly Virus
From the BICs
- Kenya's National Biosafety Boards Assessed Its Biotech Capacity through a Study Tour
- IRBC07 – ICBB05 (Back-to-Back International Conferences)
- 5th International Conference and Exhibition on Metabolomics
- 3rd Plant Genomics Congress: Asia
Read the latest:
- Biotech Updates (February 1, 2023)
- Genome Editing Supplement (January 18, 2023)
- Gene Drive Supplement (January 25, 2023)
Subscribe to BU: