Jaime F. Martínez-García, Enamul Huq, Peter H. Quail ^*

Light signals perceived by the phytochrome family of sensory photoreceptors are transduced to photoresponsive genes by an unknown mechanism. Here, we show that the basic helix-loop-helix transcription factor PIF3 binds specifically to a G-box DNA-sequence motif present in various light-regulated gene promoters, and that phytochrome B binds reversibly to G-box-bound PIF3 specifically upon light-triggered conversion of the photoreceptor to its biologically active conformer. We suggest that the phytochromes may function as integral light-switchable components of transcriptional regulator complexes, permitting continuous and immediate sensing of changes in this environmental signal directly at target gene promoters.

Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, and U.S. Department of Agriculture-Agricultural Research Service Plant Gene Expression Center, 800 Buchanan Street, Albany, CA 94710, USA.
^*   To whom correspondence should be addressed. E-mail: quail{at}nature.berkeley.edu

Phytochrome-Interacting Factors (PIFs) as Bridges between Environmental Signals and the Circadian Clock: Diurnal Regulation of Growth and Development.

J. Shin, M. U. Anwer, and S. J. Davis (2013)
Mol Plant 6, 592-595
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BRANCHED1 Promotes Axillary Bud Dormancy in Response to Shade in Arabidopsis.

E. Gonzalez-Grandio, C. Poza-Carrion, C. O. S. Sorzano, and P. Cubas (2013)
PLANT CELL 25, 834-850
 |  Abstract »  |  Full Text »  |  PDF »

Diverse Roles of Strigolactones in Plant Development.

P. B. Brewer, H. Koltai, and C. A. Beveridge (2013)
Mol Plant 6, 18-28
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Arabidopsis bZIP16 Transcription Factor Integrates Light and Hormone Signaling Pathways to Regulate Early Seedling Development.

W.-P. Hsieh, H.-L. Hsieh, and S.-H. Wu (2012)
PLANT CELL 24, 3997-4011
 |  Abstract »  |  Full Text »  |  PDF »

Functional characterization of two almond C-repeat-binding factors involved in cold response.

P. M. Barros, N. Goncalves, N. J. M. Saibo, and M. M. Oliveira (2012)
Tree Physiol 32, 1113-1128
 |  Abstract »  |  Full Text »  |  PDF »

Photoactivated phytochromes interact with HEMERA and promote its accumulation to establish photomorphogenesis in Arabidopsis.

R. M. Galvao, M. Li, S. M. Kothadia, J. D. Haskel, P. V. Decker, E. K. Van Buskirk, and M. Chen (2012)
Genes & Dev. 26, 1851-1863
 |  Abstract »  |  Full Text »  |  PDF »

Linking photoreceptor excitation to changes in plant architecture.

L. Li, K. Ljung, G. Breton, R. J. Schmitz, J. Pruneda-Paz, C. Cowing-Zitron, B. J. Cole, L. J. Ivans, U. V. Pedmale, H.-S. Jung, et al. (2012)
Genes & Dev. 26, 785-790
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Dynamic Antagonism between Phytochromes and PIF Family Basic Helix-Loop-Helix Factors Induces Selective Reciprocal Responses to Light and Shade in a Rapidly Responsive Transcriptional Network in Arabidopsis.

P. Leivar, J. M. Tepperman, M. M. Cohn, E. Monte, B. Al-Sady, E. Erickson, and P. H. Quail (2012)
PLANT CELL 24, 1398-1419
 |  Abstract »  |  Full Text »  |  PDF »

Phytochrome regulates translation of mRNA in the cytosol.

I. Paik, S. Yang, and G. Choi (2012)
PNAS 109, 1335-1340
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Functional Profiling Identifies Genes Involved in Organ-Specific Branches of the PIF3 Regulatory Network in Arabidopsis.

M. Sentandreu, G. Martin, N. Gonzalez-Schain, P. Leivar, J. Soy, J. M. Tepperman, P. H. Quail, and E. Monte (2011)
PLANT CELL 23, 3974-3991
 |  Abstract »  |  Full Text »  |  PDF »

SclR, a Basic Helix-Loop-Helix Transcription Factor, Regulates Hyphal Morphology and Promotes Sclerotial Formation in Aspergillus oryzae.

F. J. Jin, T. Takahashi, K.-i. Matsushima, S. Hara, Y. Shinohara, J.-i. Maruyama, K. Kitamoto, and Y. Koyama (2011)
Eukaryot. Cell 10, 945-955
 |  Abstract »  |  Full Text »  |  PDF »

A novel high-throughput in vivo molecular screen for shade avoidance mutants identifies a novel phyA mutation.

X. Wang, I. Roig-Villanova, S. Khan, H. Shanahan, P. H. Quail, J. F. Martinez-Garcia, and P. F. Devlin (2011)
J. Exp. Bot. 62, 2973-2987
 |  Abstract »  |  Full Text »  |  PDF »

DELLAs Regulate Chlorophyll and Carotenoid Biosynthesis to Prevent Photooxidative Damage during Seedling Deetiolation in Arabidopsis.

S. Cheminant, M. Wild, F. Bouvier, S. Pelletier, J.-P. Renou, M. Erhardt, S. Hayes, M. J. Terry, P. Genschik, and P. Achard (2011)
PLANT CELL 23, 1849-1860
 |  Abstract »  |  Full Text »  |  PDF »

Phosphorylation by CK2 Enhances the Rapid Light-induced Degradation of Phytochrome Interacting Factor 1 in Arabidopsis.

Q. Bu, L. Zhu, M. D. Dennis, L. Yu, S. X. Lu, M. D. Person, E. M. Tobin, K. S. Browning, and E. Huq (2011)
J. Biol. Chem. 286, 12066-12074
 |  Abstract »  |  Full Text »  |  PDF »

A DELLA in Disguise: SPATULA Restrains the Growth of the Developing Arabidopsis Seedling.

E.-M. Josse, Y. Gan, J. Bou-Torrent, K. L. Stewart, A. D. Gilday, C. E. Jeffree, F. E. Vaistij, J. F. Martinez-Garcia, F. Nagy, I. A. Graham, et al. (2011)
PLANT CELL 23, 1337-1351
 |  Abstract »  |  Full Text »  |  PDF »

High-Resolution Temporal Profiling of Transcripts during Arabidopsis Leaf Senescence Reveals a Distinct Chronology of Processes and Regulation.

E. Breeze, E. Harrison, S. McHattie, L. Hughes, R. Hickman, C. Hill, S. Kiddle, Y.-s. Kim, C. A. Penfold, D. Jenkins, et al. (2011)
PLANT CELL 23, 873-894
 |  Abstract »  |  Full Text »  |  PDF »

Differentiation of Arabidopsis Guard Cells: Analysis of the Networks Incorporating the Basic Helix-Loop-Helix Transcription Factor, FAMA.

C. Hachez, K. Ohashi-Ito, J. Dong, and D. C. Bergmann (2011)
Plant Physiology 155, 1458-1472
 |  Abstract »  |  Full Text »  |  PDF »

Post-transcriptional control of circadian rhythms.

S. Kojima, D. L. Shingle, and C. B. Green (2011)
J. Cell Sci. 124, 311-320
 |  Abstract »  |  Full Text »  |  PDF »

Phytochromes inhibit hypocotyl negative gravitropism by regulating the development of endodermal amyloplasts through phytochrome-interacting factors.

K. Kim, J. Shin, S.-H. Lee, H.-S. Kweon, J. N. Maloof, and G. Choi (2011)
PNAS 108, 1729-1734
 |  Abstract »  |  Full Text »  |  PDF »

Genetic Differentiation, Clinal Variation and Phenotypic Associations With Growth Cessation Across the Populus tremula Photoperiodic Pathway.

X.-F. Ma, D. Hall, K. R. S. Onge, S. Jansson, and P. K. Ingvarsson (2010)
Genetics 186, 1033-1044
 |  Abstract »  |  Full Text »  |  PDF »

Involvement of brassinosteroid signals in the floral-induction network of Arabidopsis.

J. Li, Y. Li, S. Chen, and L. An (2010)
J. Exp. Bot. 61, 4221-4230
 |  Abstract »  |  Full Text »  |  PDF »

Functional Analysis of Amino-Terminal Domains of the Photoreceptor Phytochrome B.

A. Palagyi, K. Terecskei, E. Adam, E. Kevei, S. Kircher, Z. Merai, E. Schafer, F. Nagy, and L. Kozma-Bognar (2010)
Plant Physiology 153, 1834-1845
 |  Abstract »  |  Full Text »  |  PDF »

Arabidopsis PHYTOCHROME INTERACTING FACTOR Proteins Promote Phytochrome B Polyubiquitination by COP1 E3 Ligase in the Nucleus.

I.-C. Jang, R. Henriques, H. S. Seo, A. Nagatani, and N.-H. Chua (2010)
PLANT CELL 22, 2370-2383
 |  Abstract »  |  Full Text »  |  PDF »

Genome-Wide Classification and Evolutionary Analysis of the bHLH Family of Transcription Factors in Arabidopsis, Poplar, Rice, Moss, and Algae.

L. Carretero-Paulet, A. Galstyan, I. Roig-Villanova, J. F. Martinez-Garcia, J. R. Bilbao-Castro, and D. L. Robertson (2010)
Plant Physiology 153, 1398-1412
 |  Abstract »  |  Full Text »  |  PDF »

Direct regulation of phytoene synthase gene expression and carotenoid biosynthesis by phytochrome-interacting factors.

G. Toledo-Ortiz, E. Huq, and M. Rodriguez-Concepcion (2010)
PNAS 107, 11626-11631
 |  Abstract »  |  Full Text »  |  PDF »

Origin and Diversification of Basic-Helix-Loop-Helix Proteins in Plants.

N. Pires and L. Dolan (2010)
Mol. Biol. Evol. 27, 862-874
 |  Abstract »  |  Full Text »  |  PDF »

The ABORTED MICROSPORES Regulatory Network Is Required for Postmeiotic Male Reproductive Development in Arabidopsis thaliana.

J. Xu, C. Yang, Z. Yuan, D. Zhang, M. Y. Gondwe, Z. Ding, W. Liang, D. Zhang, and Z. A. Wilson (2010)
PLANT CELL 22, 91-107
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A T9G Mutation in the Prototype TATA-Box TCACTATATATAG Determines Nucleosome Formation and Synergy with Upstream Activator Sequences in Plant Promoters.

A. Ranjan, S. A. Ansari, R. Srivastava, S. Mantri, M. H. Asif, S. V. Sawant, and R. Tuli (2009)
Plant Physiology 151, 2174-2186
 |  Abstract »  |  Full Text »  |  PDF »

Definition of Early Transcriptional Circuitry Involved in Light-Induced Reversal of PIF-Imposed Repression of Photomorphogenesis in Young Arabidopsis Seedlings.

P. Leivar, J. M. Tepperman, E. Monte, R. H. Calderon, T. L. Liu, and P. H. Quail (2009)
PLANT CELL 21, 3535-3553
 |  Abstract »  |  Full Text »  |  PDF »

Evolutionarily Conserved Regulatory Motifs in the Promoter of the Arabidopsis Clock Gene LATE ELONGATED HYPOCOTYL.

M. Spensley, J.-Y. Kim, E. Picot, J. Reid, S. Ott, C. Helliwell, and I. A. Carre (2009)
PLANT CELL 21, 2606-2623
 |  Abstract »  |  Full Text »  |  PDF »

Genome-Wide Analysis Revealed the Complex Regulatory Network of Brassinosteroid Effects in Photomorphogenesis.

L. Song, X.-Y. Zhou, L. Li, L.-J. Xue, X. Yang, and H.-W. Xue (2009)
Mol Plant 2, 755-772
 |  Abstract »  |  Full Text »  |  PDF »

CIRCADIAN CLOCK ASSOCIATED1 and LATE ELONGATED HYPOCOTYL Function Synergistically in the Circadian Clock of Arabidopsis.

S. X. Lu, S. M. Knowles, C. Andronis, M. S. Ong, and E. M. Tobin (2009)
Plant Physiology 150, 834-843
 |  Abstract »  |  Full Text »  |  PDF »

Photoexcited CRY2 Interacts with CIB1 to Regulate Transcription and Floral Initiation in Arabidopsis.

H. Liu, X. Yu, K. Li, J. Klejnot, H. Yang, D. Lisiero, and C. Lin (2008)
Science 322, 1535-1539
 |  Abstract »  |  Full Text »  |  PDF »

PIF1 directly and indirectly regulates chlorophyll biosynthesis to optimize the greening process in Arabidopsis.

J. Moon, L. Zhu, H. Shen, and E. Huq (2008)
PNAS 105, 9433-9438
 |  Abstract »  |  Full Text »  |  PDF »

Sugar beet contains a large CONSTANS-LIKE gene family including a CO homologue that is independent of the early-bolting (B) gene locus.

T. Y. P. Chia, A. Muller, C. Jung, and E. S. Mutasa-Gottgens (2008)
J. Exp. Bot. 59, 2735-2748
 |  Abstract »  |  Full Text »  |  PDF »

Mechanistic duality of transcription factor function in phytochrome signaling.

B. Al-Sady, E. A. Kikis, E. Monte, and P. H. Quail (2008)
PNAS 105, 2232-2237
 |  Abstract »  |  Full Text »  |  PDF »

The Arabidopsis Phytochrome-Interacting Factor PIF7, Together with PIF3 and PIF4, Regulates Responses to Prolonged Red Light by Modulating phyB Levels.

P. Leivar, E. Monte, B. Al-Sady, C. Carle, A. Storer, J. M. Alonso, J. R. Ecker, and P. H. Quail (2008)
PLANT CELL 20, 337-352
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The 14-3-3 Proteins {micro} and {upsilon} Influence Transition to Flowering and Early Phytochrome Response.

J. D. Mayfield, K. M. Folta, A.-L. Paul, and R. J. Ferl (2007)
Plant Physiology 145, 1692-1702
 |  Abstract »  |  Full Text »  |  PDF »

Phytochrome Induces Rapid PIF5 Phosphorylation and Degradation in Response to Red-Light Activation.

Y. Shen, R. Khanna, C. M. Carle, and P. H. Quail (2007)
Plant Physiology 145, 1043-1051
 |  Abstract »  |  Full Text »  |  PDF »

Out of the dark: how the PIFs are unmasking a dual temporal mechanism of phytochrome signalling.

E. Monte, B. Al-Sady, P. Leivar, and P. H. Quail (2007)
J. Exp. Bot.
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Many hands make light work.

P. F. Devlin, J. M. Christie, and M. J. Terry (2007)
J. Exp. Bot. 58, 3071-3077
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Glutathione S-Transferase Interacting with Far-Red Insensitive 219 Is Involved in Phytochrome A-Mediated Signaling in Arabidopsis.

I.-C. Chen, I-C. Huang, M.-J. Liu, Z.-G. Wang, S.-S. Chung, and H.-L. Hsieh (2007)
Plant Physiology 143, 1189-1202
 |  Abstract »  |  Full Text »  |  PDF »

CRYPTOCHROME2 in Vascular Bundles Regulates Flowering in Arabidopsis.

M. Endo, N. Mochizuki, T. Suzuki, and A. Nagatani (2007)
PLANT CELL 19, 84-93
 |  Abstract »  |  Full Text »  |  PDF »

Light signals and flowering.

B. Thomas (2006)
J. Exp. Bot. 57, 3387-3393
 |  Abstract »  |  Full Text »  |  PDF »

Gene profiling of the red light signalling pathways in roots.

M. L. Molas, J. Z. Kiss, and M. J. Correll (2006)
J. Exp. Bot. 57, 3217-3229
 |  Abstract »  |  Full Text »  |  PDF »

Functional Profiling Reveals That Only a Small Number of Phytochrome-Regulated Early-Response Genes in Arabidopsis Are Necessary for Optimal Deetiolation.

R. Khanna, Y. Shen, G. Toledo-Ortiz, E. A. Kikis, H. Johannesson, Y.-S. Hwang, and P. H. Quail (2006)
PLANT CELL 18, 2157-2171
 |  Abstract »  |  Full Text »  |  PDF »

FHY1 and FHL Act Together to Mediate Nuclear Accumulation of the Phytochrome A Photoreceptor.

A. Hiltbrunner, A. Tscheuschler, A. Viczian, T. Kunkel, S. Kircher, and E. Schafer (2006)
Plant Cell Physiol. 47, 1023-1034
 |  Abstract »  |  Full Text »  |  PDF »

Genome-Wide Analysis of Basic/Helix-Loop-Helix Transcription Factor Family in Rice and Arabidopsis.

X. Li, X. Duan, H. Jiang, Y. Sun, Y. Tang, Z. Yuan, J. Guo, W. Liang, L. Chen, J. Yin, et al. (2006)
Plant Physiology 141, 1167-1184
 |  Abstract »  |  Full Text »  |  PDF »

Identification of Primary Target Genes of Phytochrome Signaling. Early Transcriptional Control during Shade Avoidance Responses in Arabidopsis.

I. Roig-Villanova, J. Bou, C. Sorin, P. F. Devlin, and J. F. Martinez-Garcia (2006)
Plant Physiology 141, 85-96
 |  Abstract »  |  Full Text »  |  PDF »

Plant Circadian Rhythms.

C. R. McClung (2006)
PLANT CELL 18, 792-803
 |  Full Text »  |  PDF »

Arabidopsis CONSTANS-LIKE3 Is a Positive Regulator of Red Light Signaling and Root Growth.

S. Datta, G.H.C.M. Hettiarachchi, X.-W. Deng, and M. Holm (2006)
PLANT CELL 18, 70-84
 |  Abstract »  |  Full Text »  |  PDF »

Genetic and Molecular Analysis of Phytochromes from the Filamentous Fungus Neurospora crassa.

A. C. Froehlich, B. Noh, R. D. Vierstra, J. Loros, and J. C. Dunlap (2005)
Eukaryot. Cell 4, 2140-2152
 |  Abstract »  |  Full Text »  |  PDF »

Conservation and Divergence of Light-Regulated Genome Expression Patterns during Seedling Development in Rice and Arabidopsis.

Y. Jiao, L. Ma, E. Strickland, and X. W. Deng (2005)
PLANT CELL 17, 3239-3256
 |  Abstract »  |  Full Text »  |  PDF »

Functional Characterization of Phytochrome Interacting Factor 3 for the Arabidopsis thaliana Circadian Clockwork.

A. Viczian, S. Kircher, E. Fejes, A. J. Millar, E. Schafer, L. Kozma-Bognar, and F. Nagy (2005)
Plant Cell Physiol. 46, 1591-1602
 |  Abstract »  |  Full Text »  |  PDF »

AthaMap web tools for database-assisted identification of combinatorial cis-regulatory elements and the display of highly conserved transcription factor binding sites in Arabidopsis thaliana.

N. O. Steffens, C. Galuschka, M. Schindler, L. Bulow, and R. Hehl (2005)
Nucleic Acids Res. 33, W397-W402
 |  Abstract »  |  Full Text »  |  PDF »

A Basic Helix-Loop-Helix Transcription Factor in Arabidopsis, MYC2, Acts as a Repressor of Blue Light-Mediated Photomorphogenic Growth.

V. Yadav, C. Mallappa, S. N. Gangappa, S. Bhatia, and S. Chattopadhyay (2005)
PLANT CELL 17, 1953-1966
 |  Abstract »  |  Full Text »  |  PDF »

Arabidopsis HAF2 Gene Encoding TATA-binding Protein (TBP)-associated Factor TAF1, Is Required to Integrate Light Signals to Regulate Gene Expression and Growth.

C. Bertrand, M. Benhamed, Y.-F. Li, M. Ayadi, G. Lemonnier, J.-P. Renou, M. Delarue, and D.-X. Zhou (2005)
J. Biol. Chem. 280, 1465-1473
 |  Abstract »  |  Full Text »  |  PDF »

Biography of Peter H. Quail.

O. Yun (2004)
PNAS 101, 16088-16090
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The phytochrome-interacting transcription factor, PIF3, acts early, selectively, and positively in light-induced chloroplast development.

E. Monte, J. M. Tepperman, B. Al-Sady, K. A. Kaczorowski, J. M. Alonso, J. R. Ecker, X. Li, Y. Zhang, and P. H. Quail (2004)
PNAS 101, 16091-16098
 |  Abstract »  |  Full Text »  |  PDF »

A Novel Molecular Recognition Motif Necessary for Targeting Photoactivated Phytochrome Signaling to Specific Basic Helix-Loop-Helix Transcription Factors.

R. Khanna, E. Huq, E. A. Kikis, B. Al-Sady, C. Lanzatella, and P. H. Quail (2004)
PLANT CELL 16, 3033-3044
 |  Abstract »  |  Full Text »  |  PDF »

The Arabidopsis thaliana Clock.

P. A. Salome and C. R. McClung (2004)
J Biol Rhythms 19, 425-435
 |  Abstract »  |  PDF »

Phytochrome Phosphorylation Modulates Light Signaling by Influencing the Protein-Protein Interaction.

J.-I. Kim, Y. Shen, Y.-J. Han, J.-E. Park, D. Kirchenbauer, M.-S. Soh, F. Nagy, E. Schafer, and P.-S. Song (2004)
PLANT CELL 16, 2629-2640
 |  Abstract »  |  Full Text »  |  PDF »

PHYTOCHROME-INTERACTING FACTOR 1 Is a Critical bHLH Regulator of Chlorophyll Biosynthesis.

E. Huq, B. Al-Sady, M. Hudson, C. Kim, K. Apel, and P. H. Quail (2004)
Science 305, 1937-1941
 |  Abstract »  |  Full Text »  |  PDF »

Degradation of Phytochrome Interacting Factor 3 in Phytochrome-Mediated Light Signaling.

E. Park, J. Kim, Y. Lee, J. Shin, E. Oh, W.-I. Chung, J. R. Liu, and G. Choi (2004)
Plant Cell Physiol. 45, 968-975
 |  Abstract »  |  Full Text »  |  PDF »

Circadian-Controlled Basic/Helix-Loop-Helix Factor, PIL6, Implicated in Light-Signal Transduction in Arabidopsis thaliana.

T. Fujimori, T. Yamashino, T. Kato, and T. Mizuno (2004)
Plant Cell Physiol. 45, 1078-1086
 |  Abstract »  |  Full Text »  |  PDF »

Functional Analysis of a 450-Amino Acid N-Terminal Fragment of Phytochrome B in Arabidopsis.

Y. Oka, T. Matsushita, N. Mochizuki, T. Suzuki, S. Tokutomi, and A. Nagatani (2004)
PLANT CELL 16, 2104-2116
 |  Abstract »  |  Full Text »  |  PDF »

Constitutive Photomorphogenesis 1 and Multiple Photoreceptors Control Degradation of Phytochrome Interacting Factor 3, a Transcription Factor Required for Light Signaling in Arabidopsis.

D. Bauer, A. Viczian, S. Kircher, T. Nobis, R. Nitschke, T. Kunkel, K. C.S. Panigrahi, E. Adam, E. Fejes, E. Schafer, et al. (2004)
PLANT CELL 16, 1433-1445
 |  Abstract »  |  Full Text »  |  PDF »

Multiple Pathways in the Decision to Flower: Enabling, Promoting, and Resetting.

P. K. Boss, R. M. Bastow, J. S. Mylne, and C. Dean (2004)
PLANT CELL 16, S18-S31
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Input signals to the plant circadian clock.

A. J. Millar (2004)
J. Exp. Bot. 55, 277-283
 |  Abstract »  |  Full Text »  |  PDF »

Light signals, phytochromes and cross-talk with other environmental cues.

K. A. Franklin and G. C. Whitelam (2004)
J. Exp. Bot. 55, 271-276
 |  Abstract »  |  Full Text »  |  PDF »

The Red Side of Photomorphogenesis.

B. M. Parks (2003)
Plant Physiology 133, 1437-1444
 |  Full Text »

Identification of Promoter Motifs Involved in the Network of Phytochrome A-Regulated Gene Expression by Combined Analysis of Genomic Sequence and Microarray Data.

M. E. Hudson and P. H. Quail (2003)
Plant Physiology 133, 1605-1616
 |  Abstract »  |  Full Text »

A Growth Regulatory Loop That Provides Homeostasis to Phytochrome A Signaling.

P. Lariguet, H. E. Boccalandro, J. M. Alonso, J. R. Ecker, J. Chory, J. J. Casal, and C. Fankhauser (2003)
PLANT CELL 15, 2966-2978
 |  Abstract »  |  Full Text »  |  PDF »

HY5, Circadian Clock-Associated 1, and a cis-Element, DET1 Dark Response Element, Mediate DET1 Regulation of Chlorophyll a/b-Binding Protein 2 Expression.

B. B. Maxwell, C. R. Andersson, D. S. Poole, S. A. Kay, and J. Chory (2003)
Plant Physiology 133, 1565-1577
 |  Abstract »  |  Full Text »

EARLY FLOWERING 4 Functions in Phytochrome B-Regulated Seedling De-Etiolation.

R. Khanna, E. A. Kikis, and P. H. Quail (2003)
Plant Physiology 133, 1530-1538
 |  Abstract »  |  Full Text »

A Genomic Analysis of the Shade Avoidance Response in Arabidopsis.

P. F. Devlin, M. J. Yanovsky, and S. A. Kay (2003)
Plant Physiology 133, 1617-1629
 |  Abstract »  |  Full Text »

Arabidopsis PSEUDO-RESPONSE REGULATOR7 Is a Signaling Intermediate in Phytochrome-Regulated Seedling Deetiolation and Phasing of the Circadian Clock.

K. A. Kaczorowski and P. H. Quail (2003)
PLANT CELL 15, 2654-2665
 |  Abstract »  |  Full Text »  |  PDF »

DFL2, a New Member of the Arabidopsis GH3 Gene Family, is Involved in Red Light-Specific Hypocotyl Elongation.

T. Takase, M. Nakazawa, A. Ishikawa, K. Manabe, and M. Matsui (2003)
Plant Cell Physiol. 44, 1071-1080
 |  Abstract »  |  Full Text »  |  PDF »

Functional Characterization of Phytochrome Interacting Factor 3 in Phytochrome-Mediated Light Signal Transduction.

J. Kim, H. Yi, G. Choi, B. Shin, P.-S. Song, and G. Choi (2003)
PLANT CELL 15, 2399-2407
 |  Abstract »  |  Full Text »  |  PDF »

The Novel MYB Protein EARLY-PHYTOCHROME-RESPONSIVE1 Is a Component of a Slave Circadian Oscillator in Arabidopsis.

N. Kuno, S. G. Moller, T. Shinomura, X. Xu, N.-H. Chua, and M. Furuya (2003)
PLANT CELL 15, 2476-2488
 |  Abstract »  |  Full Text »  |  PDF »

Light-mediated regulation defines a minimal promoter region of TOP2.

G. H. C. M. Hettiarachchi, V. Yadav, M. K. Reddy, S. Chattopadhyay, and S. K. Sopory (2003)
Nucleic Acids Res. 31, 5256-5265
 |  Abstract »  |  Full Text »  |  PDF »

The Arabidopsis Basic/Helix-Loop-Helix Transcription Factor Family.

G. Toledo-Ortiz, E. Huq, and P. H. Quail (2003)
PLANT CELL 15, 1749-1770
 |  Abstract »  |  Full Text »  |  PDF »

The Arabidopsis Cupin Domain Protein AtPirin1 Interacts with the G Protein {alpha}-Subunit GPA1 and Regulates Seed Germination and Early Seedling Development.

Y. R. Lapik and L. S. Kaufman (2003)
PLANT CELL 15, 1578-1590
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A Link between Circadian-Controlled bHLH Factors and the APRR1/TOC1 Quintet in Arabidopsis thaliana.

T. Yamashino, A. Matsushika, T. Fujimori, S. Sato, T. Kato, S. Tabata, and T. Mizuno (2003)
Plant Cell Physiol. 44, 619-629
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A Suite of Photoreceptors Entrains the Plant Circadian Clock.

A. J. Millar (2003)
J Biol Rhythms 18, 217-226
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Enhancer Trapping Reveals Widespread Circadian Clock Transcriptional Control in Arabidopsis.

T. P. Michael and C. R. McClung (2003)
Plant Physiology 132, 629-639
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The Basic Helix-Loop-Helix Transcription Factor Family in Plants: A Genome-Wide Study of Protein Structure and Functional Diversity.

M. A. Heim, M. Jakoby, M. Werber, C. Martin, B. Weisshaar, and P. C. Bailey (2003)
Mol. Biol. Evol. 20, 735-747
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Changes in Photoperiod or Temperature Alter the Functional Relationships between Phytochromes and Reveal Roles for phyD and phyE.

K. J. Halliday and G. C. Whitelam (2003)
Plant Physiology 131, 1913-1920
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The Arabidopsis SRR1 gene mediates phyB signaling and is required for normal circadian clock function.

D. Staiger, L. Allenbach, N. Salathia, V. Fiechter, S. J. Davis, A. J. Millar, J. Chory, and C. Fankhauser (2003)
Genes & Dev. 17, 256-268
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Dual Role of TOC1 in the Control of Circadian and Photomorphogenic Responses in Arabidopsis.

P. Mas, D. Alabadi, M. J. Yanovsky, T. Oyama, and S. A. Kay (2003)
PLANT CELL 15, 223-236
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Mutations Affecting Light Regulation of Nuclear Genes Encoding Chloroplast Glyceraldehyde-3-Phosphate Dehydrogenase in Arabidopsis.

C. S. Chan, H.-P. Peng, and M.-C. Shih (2002)
Plant Physiology 130, 1476-1486
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Microarray Analysis of Brassinosteroid-Regulated Genes in Arabidopsis.

H. Goda, Y. Shimada, T. Asami, S. Fujioka, and S. Yoshida (2002)
Plant Physiology 130, 1319-1334
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Phytochrome mediates the external light signal to repress FT orthologs in photoperiodic flowering of rice.

T. Izawa, T. Oikawa, N. Sugiyama, T. Tanisaka, M. Yano, and K. Shimamoto (2002)
Genes & Dev. 16, 2006-2020
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The out of phase 1 Mutant Defines a Role for PHYB in Circadian Phase Control in Arabidopsis.

P. A. Salome, T. P. Michael, E. V. Kearns, A. G. Fett-Neto, R. A. Sharrock, and C. R. McClung (2002)
Plant Physiology 129, 1674-1685
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