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Plant Cell, Vol. 11, 1445-1456, August 1999, Copyright © 1999, American Society of Plant Physiologists
Light Quality–Dependent Nuclear Import of the Plant Photoreceptors Phytochrome A and B
Stefan Kirchera,
Laszlo Kozma-Bognarb,
Lana Kima,
Eva Adamb,
Klaus Hartera,
Eberhard Schäfera, and
Ferenc Nagyb
a Institut für Biologie II/Botanik, Universität Freiburg, Schänzlestrasse 1, D-79104 Freiburg, Germany
b Institute of Plant Biology, Biological Research Center, P.O. Box 521, H-6701 Szeged, Hungary
Correspondence to:
Ferenc Nagy, nagyf{at}nucleus.szbk.u-szeged.hu (E-mail), 36-62-433434 (fax)
The phytochrome (phy) family of plant photoreceptors controls various aspects of photomorphogenesis. Overexpression of rice phyA–green fluorescent protein (GFP) and tobacco phyB–GFP fusion proteins in tobacco results in functional photoreceptors. phyA–GFP and phyB–GFP are localized in the cytosol of dark-adapted plants. In our experiments, red light treatment led to nuclear translocation of phyA–GFP and phyB–GFP, albeit with different kinetics. Red light–induced nuclear import of phyB–GFP, but not that of phyA–GFP, was inhibited by far-red light. Far-red light alone only induced nuclear translocation of phyA–GFP. These observations indicate that nuclear import of phyA–GFP is controlled by a very low fluence response, whereas translocation of phyB–GFP is regulated by a low fluence response of phytochrome. Thus, light-regulated nucleocytoplasmic partitioning of phyA and phyB is a major step in phytochrome signaling.
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CIP4, a New COP1 Target, Is a Nucleus-Localized Positive Regulator of Arabidopsis Photomorphogenesis
PLANT CELL,
February 1, 2001;
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399 - 411.
[Abstract]
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L. Hennig, C. Poppe, U. Sweere, A. Martin, and E. Schäfer
Negative Interference of Endogenous Phytochrome B with Phytochrome A Function in Arabidopsis
Plant Physiology,
February 1, 2001;
125(2):
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[Abstract]
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F Nagy, S Kircher, and E Schafer
Intracellular trafficking of photoreceptors during light-induced signal transduction in plants
J. Cell Sci.,
January 2, 2001;
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[Abstract]
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R. Schaffer, J. Landgraf, M. Accerbi, V. Simon, M. Larson, and E. Wisman
Microarray Analysis of Diurnal and Circadian-Regulated Genes in Arabidopsis
PLANT CELL,
January 1, 2001;
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113 - 123.
[Abstract]
[Full Text]
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P. F. Devlin and S. A. Kay
Cryptochromes Are Required for Phytochrome Signaling to the Circadian Clock but Not for Rhythmicity
PLANT CELL,
December 1, 2000;
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[Abstract]
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A. Colón-Carmona, D. L. Chen, K.-C. Yeh, and S. Abel
Aux/IAA Proteins Are Phosphorylated by Phytochrome in Vitro
Plant Physiology,
December 1, 2000;
124(4):
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[Abstract]
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M.-S. Soh, Y.-M. Kim, S.-J. Han, and P.-S. Song
REP1, a Basic Helix-Loop-Helix Protein, Is Required for a Branch Pathway of Phytochrome A Signaling in Arabidopsis
PLANT CELL,
November 1, 2000;
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[Abstract]
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C. D. Fairchild, M. A. Schumaker, and P. H. Quail
HFR1 encodes an atypical bHLH protein that acts in phytochrome A signal transduction
Genes & Dev.,
September 15, 2000;
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[Abstract]
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C. Fankhauser and J. Chory
RSF1, an Arabidopsis Locus Implicated in Phytochrome A Signaling
Plant Physiology,
September 1, 2000;
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[Abstract]
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H.-L. Hsieh, H. Okamoto, M. Wang, L.-H. Ang, M. Matsui, H. Goodman, and X. W. Deng
FIN219, an auxin-regulated gene, defines a link between phytochrome A and the downstream regulator COP1 in light control of Arabidopsis development
Genes & Dev.,
August 1, 2000;
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[Abstract]
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E. Huq, J. M. Tepperman, and P. H. Quail
GIGANTEA is a nuclear protein involved in phytochrome signaling in Arabidopsis
PNAS,
July 30, 2000;
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[Abstract]
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A. Hisada, H. Hanzawa, J. L. Weller, A. Nagatani, J. B. Reid, and M. Furuya
Light-Induced Nuclear Translocation of Endogenous Pea Phytochrome A Visualized by Immunocytochemical Procedures
PLANT CELL,
July 1, 2000;
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[Abstract]
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P. D. Cerdán, R. J. Staneloni, J. Ortega, M. M. Bunge, M. J. Rodriguez-Batiller, R. A. Sánchez, and J. J. Casal
Sustained but Not Transient Phytochrome A Signaling Targets a Region of an Lhcb1*2 Promoter Not Necessary for Phytochrome B Action
PLANT CELL,
July 1, 2000;
12(7):
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[Abstract]
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C. Bolle, C. Koncz, and N.-H. Chua
PAT1, a new member of the GRAS family, is involved in phytochrome A signal transduction
Genes & Dev.,
May 15, 2000;
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[Abstract]
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J. F. Martínez-García, E. Huq, and P. H. Quail
Direct Targeting of Light Signals to a Promoter Element-Bound Transcription Factor
Science,
May 5, 2000;
288(5467):
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[Abstract]
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C. Lin
Photoreceptors and Regulation of Flowering Time
Plant Physiology,
May 1, 2000;
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J. W. Reed, P. Nagpal, R. M. Bastow, K. S. Solomon, M. J. Dowson-Day, R. P. Elumalai, and A. J. Millar
Independent Action of ELF3 and phyB to Control Hypocotyl Elongation and Flowering Time
Plant Physiology,
April 1, 2000;
122(4):
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[Abstract]
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M. M. Neff, C. Fankhauser, and J. Chory
Light: an indicator of time and place
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H. B. Smith
Photoreceptors in Signal Transduction: Pathways of Enlightenment
PLANT CELL,
January 1, 2000;
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L. K. Bognar, A. Hall, E. Adam, S. C. Thain, F. Nagy, and A. J. Millar
The circadian clock controls the expression pattern of the circadian input photoreceptor, phytochrome B
PNAS,
December 7, 1999;
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[Abstract]
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B. M. Parks and E. P. Spalding
Sequential and coordinated action of phytochromes A and B during Arabidopsis stem growth revealed by kinetic analysis
PNAS,
November 23, 1999;
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[Abstract]
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E. Huq, J. M. Tepperman, and P. H. Quail
GIGANTEA is a nuclear protein involved in phytochrome signaling in Arabidopsis
PNAS,
August 15, 2000;
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[Abstract]
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Y. Zhu, J. M. Tepperman, C. D. Fairchild, and P. H. Quail
Phytochrome B binds with greater apparent affinity than phytochrome A to the basic helix-loop-helix factor PIF3 in a reaction requiring the PAS domain of PIF3
PNAS,
November 21, 2000;
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[Abstract]
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