|
|
|
|
|
|
|
|
|||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | |||||
Journal of Cell Science, Vol 114, Issue 3 475-480, Copyright © 2001 by Company of Biologists
JOURNAL ARTICLES |
F Nagy, S Kircher and E Schafer
Plant Biology Institute, Biological Research Centre, H-6701 Szeged, PO Box 521, Hungary.
Plants monitor changes in the ambient light environment by highly specialised photoreceptors, which include the red/far-red photoreversible phytochromes, the blue-light-absorbing cryptochromes and phototropin and the so-far-unidentified UVB photoreceptor(s). Light easily penetrates plant organs/tissues and reaches even the subcellular compartments of various cell types. Therefore, it is not surprising that the determination of the intracellular localisation of photoreceptors has been, for many years, a major, and often controversial, subject of plant photobiology and cell biology research. Phototropin, one of the blue-light photoreceptors of higher plants, controls phototropism by monitoring the direction of light, and it is localised in or at the plasmalemma. In contrast, the subcellular localisation of phytochromes changes dynamically and exhibits a very complex pattern. These photoreceptors are localised in the cytosol in dark- grown tissues. Irradiation, however, induces import of phytochromes into the nucleus. The import occurs in a light-quality- and light-quantity-dependent fashion and, as such, seems to be unique to higher plants. Light-induced accumulation of phytochromes in the nuclei correlates well with various physiological responses mediated by these photoreceptors. These observations indicate that light-dependent intracellular redistribution of phytochrome photoreceptors is one of the major regulatory steps in photomorphogenesis.
CiteULike 
Complore 
Connotea 
Del.icio.us 
Digg 
Reddit 
Technorati 
Twitter What's this?
This article has been cited by other articles:
|
|
 |
|
  S. N. Warnasooriya and B. L. Montgomery Detection of Spatial-Specific Phytochrome Responses Using Targeted Expression of Biliverdin Reductase in Arabidopsis Plant Physiology, January 1, 2009; 149(1): 424 - 433. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 X. Yu, J. Klejnot, X. Zhao, D. Shalitin, M. Maymon, H. Yang, J. Lee, X. Liu, J. Lopez, and C. Lin Arabidopsis Cryptochrome 2 Completes Its Posttranslational Life Cycle in the Nucleus PLANT CELL, October 1, 2007; 19(10): 3146 - 3156. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 E. Kevei, E. Schafer, and F. Nagy Light-regulated nucleo-cytoplasmic partitioning of phytochromes J. Exp. Bot., September 27, 2007; (2007) erm145v1. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E. Monte, B. Al-Sady, P. Leivar, and P. H. Quail Out of the dark: how the PIFs are unmasking a dual temporal mechanism of phytochrome signalling J. Exp. Bot., September 12, 2007; (2007) erm186v1. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 R. V. S. Rajala, M. E. McClellan, J. D. Ash, and R. E. Anderson In Vivo Regulation of Phosphoinositide 3-Kinase in Retina through Light-induced Tyrosine Phosphorylation of the Insulin Receptor beta -Subunit J. Biol. Chem., November 1, 2002; 277(45): 43319 - 43326. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. Sakamoto and W. R. Briggs Cellular and Subcellular Localization of Phototropin 1 PLANT CELL, August 1, 2002; 14(8): 1723 - 1735. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 M. L. Ballesteros, C. Bolle, L. M. Lois, J. M. Moore, J.-P. Vielle-Calzada, U. Grossniklaus, and N.-H. Chua LAF1, a MYB transcription activator for phytochrome A signaling Genes & Dev., October 1, 2001; 15(19): 2613 - 2625. [Abstract] [Full Text] [PDF]
|
|
