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Vibrational Spectroscopy of Phytochromes
Biomolecules, 2023 Phytochromes are biological photoswitches that translate light into physiological functions. Spectroscopic techniques are essential tools for molecular research into these photoreceptors.
Peter Hildebrandt
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Beyond red/far-red sensing: phytochrome perception of the marine light field by microalgae. [PDF]
New PhytolSummary Phytochromes (PHYs) are a major group of photoreceptors, described as red and far‐red light sensors in land plants. Recent genomic and metagenomic explorations have revealed the presence of PHYs also in various eukaryotic microalgae originating from distinct endosymbiotic events.
Duchêne C, Jaubert M, Falciatore A.
europepmc +2 more sources
Phytochromes and Phytochrome Interacting Factors [PDF]
Plant Physiology, 2017 The basic helix-loop-helix domain-containing transcription factors that interact physically with the red and far-red light photoreceptors, phytochromes, are called PHYTOCHROME INTERACTING FACTORS (PIFs). In the last two decades, the phytochrome-PIF signaling module has been shown to be conserved from Physcomitrella patens to higher plants.
Vinh Ngoc Pham +2 more
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Phytochrome Radioimmunoassay [PDF]
Plant Physiology, 1979 A phytochrome radioimmunoassay with a detection limit of about 2 nanograms has been developed. The radioimmunoassay does not suffer from the potential drawbacks of the commonly used spectral assay and requires less than 1 microliter of crude extract from dark-grown plants for quantitation of phytochrome.
R E, Hunt, L H, Pratt
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Single GAF Domain Phytochrome Exhibits a pH-Dependent Shunt on the Millisecond Timescale. [PDF]
ChemphyschemDuring their light‐induced photocycle, phytochromes can engage in a thermal reversion back to the initially excited state, denoted as a shunt. This study investigates a pH‐dependent shunt transition in the Pfr state of the All2699g1 phytochrome from Nostoc punctiforme using UV/Vis laser flash photolysis and kinetic modeling. The findings suggest a keto‐
Trunk F +6 more
europepmc +2 more sources
Plants, 2023 Saline stress is one of the most critical abiotic stress factors that can lessen crops’ productivity. However, emerging nanotechnology, nano-fertilizers, and developing knowledge of phytochromes can potentially mitigate the negative effects of saline ...
Bushra Ahmed Alhammad +3 more
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Immunochemistry of Phytochrome [PDF]
Plant Physiology, 1973 Rabbit antibody was elicited against purified oat phytochrome polypeptides. Immunodiffusion and immunoelectrophoresis indicated the antibody elicited was predominantly a single precipitin system. No antigenic difference was detected between red-absorbing phytochrome and far red-absorbing phytochrome.
H V, Rice, W R, Briggs
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An Anatomy of Fungal Eye: Fungal Photoreceptors and Signalling Mechanisms
Journal of Fungi, 2023 Organisms have developed different features to capture or sense sunlight. Vertebrates have evolved specialized organs (eyes) which contain a variety of photosensor cells that help them to see the light to aid orientation.
Özlem Sarikaya Bayram, Özgür Bayram
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The Chromophore of Phytochrome [PDF]
Plant Physiology, 1966 The chromophore of phytochrome, the plant photomorphogenic pigment, was cleaved from the associated protein. Chromatographic and spectral properties indicated that it was a bilitriene closely similar to but distinct from the chromophore of C-phycocyanin and allophycocyanin.
H W, Siegelman +2 more
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BMC Bioinformatics, 2006 Background Phytochromes are photoreceptors, discovered in plants, that control a wide variety of developmental processes. They have also been found in bacteria and fungi, but for many species their biological role remains obscure.
Lamparter Tilman
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