Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Flipping the stress tolerance switch

24.09.2009
Japanese researchers have unlocked the secret to ABA, a single plant hormone which play a key role to developing stress resistant crops.

Many plants have evolved to endure harsh environmental conditions, yet the detailed mechanisms of plant stress resistance have long remained unclear. A single plant hormone, abscisic acid (ABA), has been known to play a central regulatory role in such resistance, holding the key to advances in the development of stress-resistant crops.

In results published this month in the Proceedings of the National Academy of Sciences, research teams at RIKEN and the Japan Science and Technology Agency (JST) have for the first time unlocked the secret to ABA-mediated signaling. The teams demonstrated that a protein phosphatase (PP2C) interacts with a protein kinase (SnRK2) to regulate the elusive ABA signal transmission pathway, acting as an ON/OFF switch.

Combining this discovery with the recent finding that PP2C activity is regulated by ABA receptors (RCAR and PYR), the researchers went on to trace the ABA signal pathway itself. In conditions of high environmental stress, they showed that ABA production leads ABA receptors to suppress PP2C, which in turn results in activation of SnRK2, flipping the ABA “switch” and triggering various stress response mechanisms.

Elucidation of the mechanism underlying ABA signaling has wide-ranging implications for plant science. In addition to its role in regulating resistance to drought, salt and cold, ABA contributes to defending against disease and pests, while also functioning at various stages of plant development. Applications are anticipated in the development of stress-resistant crops, in the improvement of seed stability, and in the control of pre-harvest sprouting.

For more information, please contact:

Dr. Taishi Umezawa
Gene Discovery Research Group
RIKEN Plant Science Center
Tel: +81-(0) 29-836-4359 / fax: +81-(0) 29-836-9060
Ms. Saeko Okada (PI officer)
Global Relations Office
RIKEN
Tel: +81-(0)48-462-1225 / Fax: +81-(0)48-467-9443
Email: koho@riken.jp

Saeko Okada | Research asia research news
Further information:
http://www.riken.jp
http://www.researchsea.com

More articles from Life Sciences:

nachricht New application for acoustics helps estimate marine life populations
16.01.2018 | University of California - San Diego

nachricht Unexpected environmental source of methane discovered
16.01.2018 | University of Washington Health Sciences/UW Medicine

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Scientists decipher key principle behind reaction of metalloenzymes

So-called pre-distorted states accelerate photochemical reactions too

What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...

Im Focus: The first precise measurement of a single molecule's effective charge

For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.

Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...

Im Focus: Paradigm shift in Paris: Encouraging an holistic view of laser machining

At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.

No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...

Im Focus: Room-temperature multiferroic thin films and their properties

Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.

Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...

Im Focus: A thermometer for the oceans

Measurement of noble gases in Antarctic ice cores

The oceans are the largest global heat reservoir. As a result of man-made global warming, the temperature in the global climate system increases; around 90% of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

10th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Münster, 10-11 April 2018

08.01.2018 | Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

 
Latest News

Novel 3-D printing technique yields high-performance composites

16.01.2018 | Materials Sciences

New application for acoustics helps estimate marine life populations

16.01.2018 | Life Sciences

Fast-tracking T cell therapies with immune-mimicking biomaterials

16.01.2018 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>