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PHOTOTRANSFORMATIONS OF PHYTOCHROME
Photochemistry and Photobiology, 1977Abstract— –Phytochrome is the photoreversible chromoprotein that controls many aspects of plant growth and development Phototransformations of the red absorbing form (Pr) and the far red absorbing form (Pfr) involve initial photoreactions followed by dark relaxation reactions.
R E, Kendrick, C J, Spruit
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Phytochrome coordinates Arabidopsis shoot and root development
Plant Journal, 2007 The phytochrome family of photoreceptors are potent regulators of plant development, affecting a broad range of responses throughout the plant life cycle, including hypocotyl elongation, leaf expansion and apical dominance.
Anthony Hall +2 more
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Photoprotection of phytochrome
Planta, 1988High-fluence-rate white light is shown to retard the degradation of phytochrome in etiolated seedlings of four different species: Amaranthus caudatus, Phaseolus radiatus (mung bean), Pisum sativum (garden pea), and Avena sativa (oat). In Amaranthus, a high photon fluence rate (approx.
H, Smith, G M, Jackson, G C, Whitelam
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From phytochrome to phytochromes
1994Abstract Plants are bound to a particular site for their lifetime. As a living system lacking mobility, the ability to sense and subsequently to react properly to dramatic environmental changes is a crucial prerequisite for survival. Light is probably the most important environmental stimulus to which plants react: it is not only the ...
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2006
For vision to occur, light absorption is an absolute physical requirement. The array of photomorphogenic responses all has one thing in common: these processes are initiated only after photo excitation of a holoprotein. These holoproteins generally contain a polypeptide component and a small, light-absorbing ligand termed the chromophore.
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For vision to occur, light absorption is an absolute physical requirement. The array of photomorphogenic responses all has one thing in common: these processes are initiated only after photo excitation of a holoprotein. These holoproteins generally contain a polypeptide component and a small, light-absorbing ligand termed the chromophore.
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Phytochrome-interacting factors
Seminars in Cell & Developmental Biology, 2000The phytochrome family of sensory photoreceptors transduces environmental light signals to responsive nuclear genes by poorly defined pathways. The recent application of yeast two-hybrid library screens to the identification of components that physically interact with members of the phytochrome family has dramatically altered previous views of the ...
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Gene regulation by phytochrome
Trends in Genetics, 1988Abstract Many responses of plants to phytochrome involve alterations in gene expression. Recent studies with transgenic plants as an expression system have led to the identification of cis -acting elements that mediate responses to phytochrome and light.
F, Nagy, S A, Kay, N H, Chua
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Properties of phytochrome in gymnosperms
Planta, 1972Addition of water to dry seeds of Pinus spp. increased the detectable phytochrome immediately and the level reached after 2 h in darkness was retained for at least 20 h at 20° C. The in-vivo difference spectra of phytochrome in Pinus seeds showed absorption maxima at approximately 656 nm and at 710 nm to 715 nm.
R, Grill, C J, Spruit
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Spatial distribution of phytochromes
Journal of Plant Research, 1997Phytochromes are chromoproteins which mediate several light responses in plants. Phytochrome proteins are encoded by a gene family which is currently being characterized in several plant species. Analysis of type-specific mutants of two well-characterized members of the family, PhyA and PhyB, indicates that these proteins have distinct functions.
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