RUB Researchers Reveal Molecular Basis of Plant's Shade Avoidance SyndromeDecember 23, 2010
When smaller plants lose the battle during competitiveness for light due to larger plants, they counteract by elongating their shoot and stretching their leaves towards the sun. This reaction is called shade avoidance syndrome. Since the molecular basis for this syndrome is still unclear, Stephan Pollman of the Ruhr University in Bochum (RUB) and colleagues identified a regulation pathway. PIN-FORMED 3 or PIN3, a transport protein, enables the buildup of growth hormone auxin, which is involved in this adaptation process.
When the ratio between red to far red is low (which occurs during low light conditions) PIN3 accumulates on the lateral endodermal cell walls. This would eventually lead to auxin flow towards the epidermal cell layers, which are involved in the elongation of the shoot.
To verify the auxin content of plants under sunlight and plants under shade, the researchers used mass spectrometry. They compared the amount of auxin between a wild-type Arabidopsis plants and genetically engineered plants, which cannot develop PIN3. Shade avoidance syndrome was not observed in the GE plants.
The complete article published by the PNAS is available at http://www.pnas.org/content/early/2010/12/08/1013457108.full.pdf+html?sid=2bce3a8d-d5d9-487e-8695-e14470cb45e5 http://aktuell.ruhr-uni-bochum.de/pm2010/pm00434.html.en.
The Crop Biotech Update is a weekly newsletter of ISAAA, a not-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
- Role of Transgenic Crops in Sustainable Development
- NCPA Study Shows Benefits of GM Trees
- CBU's 9th Set of Borlaug Medal Winners
- Soybean Production in South Africa Could Reach 1.62 M Tons by 2020
- Ghana Sets Up Biotechnology Laboratory
- Chilean Scientists Develop Vaccine-Producing GM Tomatoes Against Hepatitis and Cholera
- USDA Releases 2010 Honey Bee Colony Collapse Disorder Progress Report
- New Strategy to Control Stem Rust
- UNL Research Looking for Ways to Block Rice Blast
- Scab Forum Focuses on Genetic Resistance, Alerting Growers
- USDA Releases Final Environmental Impact Statement for RR Alfalfa
- BIO Statement on USDA Announcement on Alfalfa EIS and Coexistence Issue
- Bt Eggplant Undergoes Regulatory Assessment and Compliance, Expert Says
- Philippine University Professor Assures Bt Eggplant is Safe
- Korea Releases Tasty New Pest-Proof Rice
- Australia's Joint Effort to Deliver ‘Healthier' Grains
- GM Dialogue for Chinese Scientists and the Public Concluded
- A New Marker Developed for Rice Blast Resistance Breeding in India
- BPI Assures Biosafety Compliance but FSBR/Bt Eggplant UPMin Trial Pre-terminated
- Germany Supports Food Security and Climate-Smart Agriculture
- European Biotechnology Industry Will Deliver on Responsible Innovation
- Genome of Downy Mildew Pathogen Sequenced
- RUB Researchers Reveal Molecular Basis of Plant's Shade Avoidance Syndrome
- Diversity of Beetle Genes Encoding Novel Plant Cell Wall Degrading Enzymes
- Callus Induction, Regeneration and Response to Different Selective Agent Concentrations of Sugarcane Genotypes
- China Bio-Agriculture Industry Summit 2011
- Revitalization of the Groundnut Sector in West Africa
Read the latest:
- Crop Biotech Update (August 3, 2022)
- Genome Editing Supplement (July 20, 2022)
- Gene Drive Supplement (July 27, 2022)
Subscribe to CBU: