Articles tagged with Phytochrome Signaling
New research reveals that plants rely on multiple heat-sensing systems and a sugar-based mechanism to detect temperature changes. Sugar produced in sunlight helps plants grow taller even when thermosensors like phytochrome B are less effective. This discovery could lead to breeding crops more resiliently under stress.
Researchers have discovered a way to reverse the enzymatic activity of histidine kinases by modifying a small linker helix region. This breakthrough enables the control of bacterial gene expression under red light using an optogenetic tool called pDERusk.
Researchers have determined the molecular level function of free-forming structures in plant cells that help sense light and temperature, enabling plants to distinguish a range of different light intensities. The formation of these organelles is not random but is linked to specific locations within the cell, particularly near centromeres.
Phytochromes play a dual role in seed germination of Aethionema arabicum, stimulating but also inhibiting germination. The study reveals that high light intensity and duration inhibit germination, while short exposure favors germination, indicating a genetic basis for adaptation to environmental requirements.
Researchers discovered that non-vascular bryophytes like Marchantia polymorpha adapt their architecture in response to shade, using phytochromes to regulate branching. The study found a liverwort-specific microRNA and SPL gene controlling meristem function, differing from vascular plants.
Scientists have clarified phytochrome's atomic-scale resolution, unlocking its role in regulating bacterial pathogenicities. The study provides a new photoactivation model explaining the signaling mechanism of black rot disease.
Researchers found that plants exhibit a rapid burst of gene activity within an hour of dawn, with three distinct waves. This inner circadian clock helps plants prepare for the day, and scientists identified key regulators of light signaling, including HY5 and BBX31.
Scientists have discovered intricate structural changes in phytochromes that allow plants and bacteria to perceive light. The findings provide new insights into the function of these protein molecules and could lead to tools controlling their growth patterns.
Researchers have discovered a genetic mechanism used by all plants to sense temperature during the day, using the model plant Arabidopsis. The study reveals that phytochrome B plays a key role in this process, and identifies a transcription activator called HEMERA as the master control for temperature sensing.
A team of scientists led by Joanne Chory and Detlef Weigel studied the natural variation in light sensitivity across different Arabidopsis varieties. They found that strains from lower latitudes were less sensitive to light, and that specific genetic mutations affected the molecule's ability to transmit signals. The study sheds light o...