Taking steroids is a definite no-no for human athletes, but treating plants with steroids could offer performance enhancement of a more desirable nature by boosting the biomass and seed yields of crops. Unfortunately, plant steroids are complex, expensive chemicals, and the biological mechanisms by which they alter plant growth and development have remained largely a mystery.
Now, however, two research articles by Howard Hughes Medical Institute investigator Joanne Chory and her colleagues open a new pathway to understanding how plant steroids work at the molecular level. The discoveries made by Chorys team may one day lead to less expensive ways to trigger growth enhancement of plants. "The common theme of these two articles is that we are now beginning to unravel the molecular mechanisms by which steroid hormones regulate gene expression in plants," said Chory, who is at The Salk Institute for Biological Studies.
The first study reveals how plant steroid hormones, called brassinosteroids, plug into and activate receptor proteins on the surface of plant cells. Receptor activation is the first step in triggering processes, such as growth, development, the stress response and senescence -- the deterioration of plants at the end of a growing season. In a second study, the researchers identified and clarified the function of specific transcription factors, which are proteins that regulate genes involved in the cells response to steroids.
Jim Keeley | EurekAlert!
Fine organic particles in the atmosphere are more often solid glass beads than liquid oil droplets
21.04.2017 | Max-Planck-Institut für Chemie
Study overturns seminal research about the developing nervous system
21.04.2017 | University of California - Los Angeles Health Sciences
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
Two researchers at Heidelberg University have developed a model system that enables a better understanding of the processes in a quantum-physical experiment...
Glaciers might seem rather inhospitable environments. However, they are home to a diverse and vibrant microbial community. It’s becoming increasingly clear that they play a bigger role in the carbon cycle than previously thought.
A new study, now published in the journal Nature Geoscience, shows how microbial communities in melting glaciers contribute to the Earth’s carbon cycle, a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
21.04.2017 | Physics and Astronomy
21.04.2017 | Health and Medicine
21.04.2017 | Physics and Astronomy