Publication Date:
1995-05-05
Description:
The phytochrome family of photoreceptors monitors the light environment and dictates patterns of gene expression that enable the plant to optimize growth and development in accordance with prevailing conditions. The enduring challenge is to define the biochemical mechanism of phytochrome action and to dissect the signaling circuitry by which the photoreceptor molecules relay sensory information to the genes they regulate. Evidence indicates that individual phytochromes have specialized photosensory functions. The amino-terminal domain of the molecule determines this photosensory specificity, whereas a short segment in the carboxyl-terminal domain is critical for signal transfer to downstream components. Heterotrimeric GTP-binding proteins, calcium-calmodulin, cyclic guanosine 5'-phosphate, and the COP-DET-FUS class of master regulators are implicated as signaling intermediates in phototransduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Quail, P H -- Boylan, M T -- Parks, B M -- Short, T W -- Xu, Y -- Wagner, D -- GM47475/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1995 May 5;268(5211):675-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Biology, University of California, Berkeley 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7732376" target="_blank"〉PubMed〈/a〉
Keywords:
Photoreceptor Cells/chemistry/*physiology
;
*Phytochrome/chemistry/genetics
;
*Plant Physiological Phenomena
;
Plants/genetics
;
Signal Transduction/*physiology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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