Biologists discover gene that helps roots limit leaf growth
A University of Utah study identified a gene that helps a plants roots send chemical signals that makes leaves grow. A thale cress seedling with the normal gene (above) produced four leaves plus two smaller cotyledons or embryonic leaves. But when the gene is disabled, the seedling (closeup view below) produced only two cotyledons and no normal leaves. Photo by Jaimie Van Norman, University of Utah.
University of Utah biologists discovered a gene that allows a plants roots to tell the leaves to stop growing, presumably when water is scarce, soil is too compacted or other conditions are bad.
While roots obviously carry food and water to the leaves, the new findings help show how roots also send chemical signals that control whether or not leaves grow. How leaves grow is a crucial matter given that leafy plants supply food for humans and other creatures, produce oxygen for all animals to breathe, influence global climate and grace us with the current season of brilliant fall colors. "When we look at plants, its easy to think only about the above-ground parts you can see," says Leslie Sieburth, who led the study and is an associate professor of biology at the University of Utah. "But this study shows that the roots potentially play a huge role – in addition to supplying water and nutrients – in controlling how the plant comes to look as it does. Its very easy to ignore the root, but our study shows we shouldnt."
Jaimie Van Norman, | EurekAlert!
Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery
20.01.2017 | GSI Helmholtzzentrum für Schwerionenforschung GmbH
Seeking structure with metagenome sequences
20.01.2017 | DOE/Joint Genome Institute
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Awards Funding
20.01.2017 | Materials Sciences
20.01.2017 | Life Sciences