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
Novel mechanisms of action discovered for the skin cancer medication Imiquimod
21.10.2016 | Technische Universität München
Second research flight into zero gravity
21.10.2016 | Universität Zürich
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.
Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
21.10.2016 | Health and Medicine
21.10.2016 | Information Technology
21.10.2016 | Materials Sciences