Articles tagged with Phytochromes
Researchers discovered that diatoms possess phytochromes, which enable them to detect changes in the underwater light spectrum and sense their vertical position. This adaptation allows microalgae to adjust their biological activity in response to seasonal changes.
Scientists have identified a novel photoreceptor in cyanobacteria that can detect green/teal light, breaking the typical red/green spectrum. The discovery highlights the remarkable diversity and editability of cyanobacteriochromes, expanding our understanding of how these organisms perceive color.
A team of researchers from Okayama University discovered the recognition mechanism behind the repair of damaged photosystem II protein D1 by FtsH protease. Oxidized tryptophan amino acid residues play a critical role in this process, and understanding their function is essential for improving crop tolerance.
Researchers at UNIGE discovered that seeds have an internal thermometer-like mechanism to delay or block germination if temperatures are too high. This mechanism is implemented by the endosperm tissue, which controls germination and seedling growth.
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.
Researchers have successfully uncovered the structure of a model bacterial phytochrome, revealing symmetrical and asymmetrical states in response to light. The study found that almost non-existent structural changes in regulatory domains can amplify biochemical effects elsewhere.
Researchers at Van Andel Institute have discovered a new, detailed molecular structure of PhyB, a vital photoreceptor in plants, which allows them to sense light and regulate their lifecycles. The findings may lead to breakthroughs in agricultural and bioengineering practices.
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 a model phytochrome, DrBphP, functions as a phosphatase rather than a histidine kinase, exhibiting an 'inverted' signaling mechanism. This discovery challenges previous understanding of bacterial phytochromes and their role in light response.
Phytochromes help plants detect light direction, intensity, and duration, as well as temperature, allowing them to adapt to various environments. The study fully characterized the phytochrome family in Arabidopsis thaliana and found surprising differences between isoforms.
Researchers have identified a novel temperature sensing mechanism in plants using the phytochrome B protein, which triggers plant growth and controls flowering time. The study reveals that specific photobodies disappear selectively at different temperatures, suggesting individual sensors for specific temperature ranges.
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.
Phytochromes can sense light intensity, duration, color, and day length by measuring the proportions of their inactive and active forms. Researchers have overcome a major hurdle to defining the transition between these states, allowing for atomic-resolution molecular movies of the process.
UC Riverside researchers identified two genes responsible for regulating plant greening through mutant plant experiments. The discovery sheds light on the complex process of photosynthesis and its control by the cell's nucleus and chloroplasts.
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.
The study reveals the molecular mechanisms of phytochromes, which convert light into cellular information, and their potential applications in oncology and genetic disease treatment. Understanding these proteins can help develop non-invasive imaging techniques and light-controlled tools for medical applications.
Scientists have gained new insights into dynamic structural changes in light-sensitive biomolecules, revealing a universal mechanism for the transformation from dark-adapted to light-adapted states. This discovery could advance applications in agriculture and optogenetics.
A team of scientists has identified two proteins, PCH1 and PCHL, that regulate the activity of phytochrome B, a key photoreceptor protein in plants. This discovery allows plants to adapt their light sensitivity to different environmental conditions, enabling them to optimize photosynthesis and growth.
Researchers identified a crucial part of the photoreceptor responsible for light-dependent gene expression in Arabidopsis thaliana. This finding has significant implications for agriculture, enabling the development of crops that can thrive in diverse environments with increased crop density.
Scientists have found a 'thermometer' molecule in plants that measures night-time heat to stimulate growth and trigger springtime budding. This discovery could help breed tougher crops resistant to climate change.
Scientists have discovered that plant light sensors also respond to temperature, allowing plants to detect changes in growth conditions. Mutant plants revealed a previously unknown conversion process where thermal reversion occurs without light, affecting the plant's response to temperature and light intensity.
Researchers at the University of Gothenburg discovered the inner workings of phytochrome proteins, which inform plant cells whether it's day or night. The findings enable modification of these proteins to increase crop yield and engineer light-sensitive proteins for controlling organisms by light.
A new study from Duke University found that plant light-sensing molecules were inherited from ancient algae, contradicting the prevailing idea of bacterial origins. The researchers analyzed 300 DNA and RNA sequences from phytochrome proteins in a wide range of algae and land plants.
The discovery of the plant phytochrome's three-dimensional structure may enable the development of technologies to grow plants at higher densities, increasing crop yields and reducing resource usage. By manipulating the light sensor, researchers can alter the conditions under which plants grow and develop.
Researchers have studied phytochromes, proteins that detect light and inform plant cells whether it is day or night. The discovery increases understanding of these proteins and may lead to new strategies for developing more efficient crops that can grow in low-light conditions.
Research clarifies how bacterial red light photosensors change structure when sensing light, revealing amplification mechanism for rapid signal transmission. The study also sheds light on the molecular-level operating mechanisms of phytochrome proteins in plants.
Researchers at UC Davis discovered that aquatic algae can perceive light across the visible spectrum, allowing them to adapt to changing conditions. This broad spectral coverage helps algae make use of whatever light they can in the ocean.
Scientists have discovered that red light influences the regulation of nectar secretion in extrafloral nectaries of plants like Lima beans. This process involves the phytochrome protein and affects the binding of plant hormone jasmonic acid to isoleucine.
Lima bean plants produce extrafloral nectar to attract ants, which defend against herbivores. Red light influences the production of this nectar through phytochrome, a photoreceptor that regulates the signaling molecule jasmonic acid. This light-dependent regulation enhances defense when herbivory is most likely.
A team of researchers from Duke University and the Salk Institute for Biological Studies has identified a key intermediary between the light system for information and the light system that makes fuel in plants. The discovery, led by Meng Chen, could help increase agricultural yields or improve photosynthesis of biofuel crops.
Researchers have deciphered the molecular structure of phytochrome, a key 'light switch' in plant growth. The study reveals a twisted area of contact between two units, suggesting that light adjusts its strength and orientation to transmit signals.
Michigan State University scientist Beronda Montgomery is studying the process of stem growth in plants, which diverts energy from seed, flower, and leaf production. Her research aims to understand how phytochromes control plant growth and develop new approaches to improve crop yields.
Researchers have obtained the crystal structure of phytochrome, a protein that regulates plant growth and development in response to light. The discovery may lead to precise control over flowering events and improved crop yields.
Researchers at The Salk Institute for Biological Studies identified a distinct shade-avoidance syndrome signaling pathway in plants. This discovery could lead to improved crop yields by delaying premature flowering under shaded conditions.
Researchers have discovered that phytochromes regulate the synthesis of bacterial photosynthetic apparatus, essential for symbiotic relationships with leguminous plants. The discovery provides new insights into the operational mechanisms of light sensors in plants and has potential applications in molecular biology.