phytochrome

Summary

Summary: A blue-green biliprotein widely distributed in the plant kingdom.

Top Publications

  1. ncbi Photoreceptor regulation of CONSTANS protein in photoperiodic flowering
    Federico Valverde
    Max Planck Institute for Plant Breeding, Carl von Linne Weg 10, D 50829 Cologne, Germany
    Science 303:1003-6. 2004
  2. pmc Mammalian expression of infrared fluorescent proteins engineered from a bacterial phytochrome
    Xiaokun Shu
    Howard Hughes Medical Institute, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA 92093 0647, USA
    Science 324:804-7. 2009
  3. pmc Phytochrome functions in Arabidopsis development
    Keara A Franklin
    Department of Biology, University of Leicester, Leicester LE1 7RH, UK
    J Exp Bot 61:11-24. 2010
  4. pmc PIFs: pivotal components in a cellular signaling hub
    Pablo Leivar
    Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
    Trends Plant Sci 16:19-28. 2011
  5. pmc Phytochrome mediates the external light signal to repress FT orthologs in photoperiodic flowering of rice
    Takeshi Izawa
    Laboratory of Plant Molecular Genetics, Nara Institute of Science and Technology, Ikoma, Nara 630 0101, Japan
    Genes Dev 16:2006-20. 2002
  6. pmc Molecular dissection of the roles of phytochrome in photoperiodic flowering in rice
    Asami Osugi
    Graduate School of Frontier Sciences, University of Tokyo, 5 1 5 Kashiwanoha, Kashiwa 277 8561, Japan
    Plant Physiol 157:1128-37. 2011
  7. pmc Inhibition of the shade avoidance response by formation of non-DNA binding bHLH heterodimers
    Patricia Hornitschek
    Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
    EMBO J 28:3893-902. 2009
  8. ncbi The FHY3 and FAR1 genes encode transposase-related proteins involved in regulation of gene expression by the phytochrome A-signaling pathway
    Matthew E Hudson
    Department of Plant and Microbial Biology, University of California, Berkeley 94720, USA
    Plant J 34:453-71. 2003
  9. ncbi The Aspergillus nidulans phytochrome FphA represses sexual development in red light
    Anne Blumenstein
    Max Planck Institute for Terrestrial Microbiology, Karl von Frisch Str, D 35042 Marburg, Germany
    Curr Biol 15:1833-8. 2005
  10. ncbi Degradation of phytochrome interacting factor 3 in phytochrome-mediated light signaling
    Eunae Park
    Department of Biological Sciences, KAIST, Daejeon, 305 701 Korea
    Plant Cell Physiol 45:968-75. 2004

Detail Information

Publications327 found, 100 shown here

  1. ncbi Photoreceptor regulation of CONSTANS protein in photoperiodic flowering
    Federico Valverde
    Max Planck Institute for Plant Breeding, Carl von Linne Weg 10, D 50829 Cologne, Germany
    Science 303:1003-6. 2004
    ..This layer of regulation refines the circadian rhythm in CO messenger RNA and is central to the mechanism by which day length controls flowering...
  2. pmc Mammalian expression of infrared fluorescent proteins engineered from a bacterial phytochrome
    Xiaokun Shu
    Howard Hughes Medical Institute, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA 92093 0647, USA
    Science 324:804-7. 2009
    ..Because their wavelengths penetrate tissue well, IFPs are suitable for whole-body imaging. The IFPs developed here provide a scaffold for further engineering...
  3. pmc Phytochrome functions in Arabidopsis development
    Keara A Franklin
    Department of Biology, University of Leicester, Leicester LE1 7RH, UK
    J Exp Bot 61:11-24. 2010
    ..Light signals are fundamental to the growth and development of plants. Red and far-red light are sensed using the phytochrome family of plant photoreceptors...
  4. pmc PIFs: pivotal components in a cellular signaling hub
    Pablo Leivar
    Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
    Trends Plant Sci 16:19-28. 2011
    A small subset of basic helix-loop-helix transcription factors called PIFs (phytochrome-interacting factors) act to repress seed germination, promote seedling skotomorphogenesis and promote shade-avoidance through regulated expression of ..
  5. pmc Phytochrome mediates the external light signal to repress FT orthologs in photoperiodic flowering of rice
    Takeshi Izawa
    Laboratory of Plant Molecular Genetics, Nara Institute of Science and Technology, Ikoma, Nara 630 0101, Japan
    Genes Dev 16:2006-20. 2002
    ..To better understand the molecular mechanisms of day-length recognition, we examined the interaction between phytochrome signals and circadian clocks in photoperiodic-flowering mutants of rice...
  6. pmc Molecular dissection of the roles of phytochrome in photoperiodic flowering in rice
    Asami Osugi
    Graduate School of Frontier Sciences, University of Tokyo, 5 1 5 Kashiwanoha, Kashiwa 277 8561, Japan
    Plant Physiol 157:1128-37. 2011
    ..Analyses using a rice phytochrome chromophore-deficient mutant, photoperiod sensitivity5, have so far revealed that within this network, ..
  7. pmc Inhibition of the shade avoidance response by formation of non-DNA binding bHLH heterodimers
    Patricia Hornitschek
    Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
    EMBO J 28:3893-902. 2009
    ..The phytochrome photoreceptors measure the R/FR ratio and control the SAS...
  8. ncbi The FHY3 and FAR1 genes encode transposase-related proteins involved in regulation of gene expression by the phytochrome A-signaling pathway
    Matthew E Hudson
    Department of Plant and Microbial Biology, University of California, Berkeley 94720, USA
    Plant J 34:453-71. 2003
    ..of reduced inhibition of hypocotyl elongation, which is specific to far-red light and therefore specific to the phytochrome A (phyA)-signaling pathway...
  9. ncbi The Aspergillus nidulans phytochrome FphA represses sexual development in red light
    Anne Blumenstein
    Max Planck Institute for Terrestrial Microbiology, Karl von Frisch Str, D 35042 Marburg, Germany
    Curr Biol 15:1833-8. 2005
    b>Phytochrome photoreceptors sense red and far-red light through photointerconversion between two stable conformations, a process mediated by a linear tetrapyrrole chromophore...
  10. ncbi Degradation of phytochrome interacting factor 3 in phytochrome-mediated light signaling
    Eunae Park
    Department of Biological Sciences, KAIST, Daejeon, 305 701 Korea
    Plant Cell Physiol 45:968-75. 2004
    ..red and far-red light receptors, regulate light responses through many signaling components, including phytochrome-interacting proteins...
  11. pmc Phytochrome structure and signaling mechanisms
    Nathan C Rockwell
    Section of Molecular and Cellular Biology, University of California, Davis, California 95616, USA
    Annu Rev Plant Biol 57:837-58. 2006
    ..The discovery of new bacterial and cyanobacterial members of the phytochrome family within the last decade has greatly aided biochemical and structural characterization of this family, ..
  12. ncbi Photoactivated phytochrome induces rapid PIF3 phosphorylation prior to proteasome-mediated degradation
    Bassem Al-Sady
    Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, California 94720, USA
    Mol Cell 23:439-46. 2006
    Following light-induced nuclear translocation, specific members of the phytochrome (phy) photoreceptor family (phyA to phyE) interact with bHLH transcription factors, such as PIF3, and induce changes in target-gene expression...
  13. pmc 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
    Pablo Leivar
    Department of Plant and Microbial Biology, University of California, Berkeley, California 94720, USA
    Plant Cell 24:1398-419. 2012
    Plants respond to shade-modulated light signals via phytochrome (phy)-induced adaptive changes, termed shade avoidance...
  14. pmc The FAR1 locus encodes a novel nuclear protein specific to phytochrome A signaling
    M Hudson
    Department of Plant and Microbial Biology, University of California, Berkeley, California 94720, USA
    Genes Dev 13:2017-27. 1999
    The phytochrome family of photoreceptors has a well-defined role in regulating gene expression in response to informational light signals. Little is known, however, of the early steps of phytochrome signal transduction...
  15. pmc HFR1 is targeted by COP1 E3 ligase for post-translational proteolysis during phytochrome A signaling
    In Cheol Jang
    Laboratory of Plant Molecular Biology, Rockefeller University, New York, New York 10021, USA
    Genes Dev 19:593-602. 2005
    Upon activation by far-red light, phytochrome A signals are transduced through several pathways to promote photomorphogenesis...
  16. pmc Transposase-derived transcription factors regulate light signaling in Arabidopsis
    Rongcheng Lin
    Boyce Thompson Institute for Plant Research BTI, Cornell University, Ithaca, NY 14853, USA
    Science 318:1302-5. 2007
    Plants use light to optimize growth and development. The photoreceptor phytochrome A (phyA) mediates various far-red light-induced responses...
  17. pmc Brassinosteroid, gibberellin and phytochrome impinge on a common transcription module in Arabidopsis
    Ming Yi Bai
    Department of Plant Biology, Carnegie Institution for Science, Stanford, California 94305, USA
    Nat Cell Biol 14:810-7. 2012
    ..GA promotion of hypocotyl elongation requires both BZR1 and the phytochrome-interacting factors (PIFs), as well as their common downstream targets encoding the PRE-family helix-loop-helix ..
  18. ncbi Phytochrome-interacting factor 1 is a critical bHLH regulator of chlorophyll biosynthesis
    Enamul Huq
    Section of Molecular Cell and Developmental Biology and Institute of Molecular Biology, University of Texas at Austin, Austin, TX 78712, USA
    Science 305:1937-41. 2004
    ..We identified a basic helix-loop-helix (bHLH) transcription factor, designated PHYTOCHROME-INTERACTING FACTOR 1 (PIF1), that negatively regulates chlorophyll biosynthesis...
  19. pmc Multiple phytochrome-interacting bHLH transcription factors repress premature seedling photomorphogenesis in darkness
    Pablo Leivar
    Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
    Curr Biol 18:1815-23. 2008
    ....
  20. pmc The Arabidopsis photomorphogenic mutant hy1 is deficient in phytochrome chromophore biosynthesis as a result of a mutation in a plastid heme oxygenase
    T Muramoto
    Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916 5 Takayama, Ikoma, Nara 630 0101, Japan
    Plant Cell 11:335-48. 1999
    The HY1 locus of Arabidopsis is necessary for phytochrome chromophore biosynthesis and is defined by mutants that show a long hypocotyl phenotype when grown in the light...
  21. pmc The phytochrome-interacting factor PIF7 negatively regulates DREB1 expression under circadian control in Arabidopsis
    Satoshi Kidokoro
    Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo 113 8657, Japan
    Plant Physiol 151:2046-57. 2009
    ..Using yeast one-hybrid screens, we isolated cDNA encoding the transcriptional factor Phytochrome-Interacting Factor7 (PIF7), which specifically binds to the G-box of the DREB1C promoter...
  22. ncbi Phytochrome Interacting Factors: central players in phytochrome-mediated light signaling networks
    Alicia Castillon
    Section of Molecular Cell and Developmental Biology and The Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712, USA
    Trends Plant Sci 12:514-21. 2007
    ..constantly monitor and respond to changes in the red and far-red regions of the light spectrum through the phytochrome family of photoreceptors...
  23. doi Complete loss of photoperiodic response in the rice mutant line X61 is caused by deficiency of phytochrome chromophore biosynthesis gene
    Hiroki Saito
    Graduate School of Agriculture, Kyoto University, Kitashirakawa, Sakyou, Kyoto, 606 8502, Japan
    Theor Appl Genet 122:109-18. 2011
    ..that the Se13 gene is identical to AK101395 (=OsHY2), which encodes phytochromobilin synthase, a key enzyme in phytochrome chromophore biosynthesis...
  24. pmc Distinct phytochrome actions in nonvascular plants revealed by targeted inactivation of phytobilin biosynthesis
    Yu Rong Chen
    Institute of Plant and Microbial Biology, Academia Sinica, Taipei 11529, Taiwan
    Proc Natl Acad Sci U S A 109:8310-5. 2012
    The red/far-red light photoreceptor phytochrome mediates photomorphological responses in plants. For light sensing and signaling, phytochromes need to associate with open-chain tetrapyrrole molecules as the chromophore...
  25. ncbi Diversification of phytochrome contributions to germination as a function of seed-maturation environment
    Kathleen Donohue
    Department of Organismic and Evolutionary Biology, Harvard University, 22 Divinity Ave, Cambridge, MA 02138, USA
    New Phytol 177:367-79. 2008
    ..This study identifies among the first genes to be associated with maternal environmental effects on germination...
  26. pmc FAR-RED ELONGATED HYPOCOTYL1 and FHY1-LIKE associate with the Arabidopsis transcription factors LAF1 and HFR1 to transmit phytochrome A signals for inhibition of hypocotyl elongation
    Seong Wook Yang
    Laboratory of Plant Molecular Biology, Rockefeller University, New York, New York 10065, USA
    Plant Cell 21:1341-59. 2009
    Among the five phytochromes in Arabidopsis thaliana, phytochrome A (phyA) plays a major role in seedling deetiolation...
  27. ncbi PIF3, a phytochrome-interacting factor necessary for normal photoinduced signal transduction, is a novel basic helix-loop-helix protein
    M Ni
    Department of Plant and Microbial Biology, University of California, Berkeley 94720, USA
    Cell 95:657-67. 1998
    The mechanism by which the phytochrome (phy) photoreceptor family transduces informational light signals to photoresponsive genes is unknown...
  28. pmc Root-localized phytochrome chromophore synthesis is required for photoregulation of root elongation and impacts root sensitivity to jasmonic acid in Arabidopsis
    Stephanie E Costigan
    Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824 1312, USA
    Plant Physiol 157:1138-50. 2011
    Plants exhibit organ- and tissue-specific light responses. To explore the molecular basis of spatial-specific phytochrome-regulated responses, a transgenic approach for regulating the synthesis and accumulation of the phytochrome ..
  29. doi Abscisic acid, high-light, and oxidative stress down-regulate a photosynthetic gene via a promoter motif not involved in phytochrome-mediated transcriptional regulation
    Roberto J Staneloni
    Fundacion Instituto Leloir, and IIBBA CONICET, C1405BWE Buenos Aires, Argentina
    Mol Plant 1:75-83. 2008
    In etiolated seedlings, light perceived by phytochrome promotes the expression of light-harvesting chlorophyll a/b protein of photosystem II (Lhcb) genes. However, excess of photosynthetically active radiation can reduce Lhcb expression...
  30. pmc Light-induced phosphorylation and degradation of the negative regulator PHYTOCHROME-INTERACTING FACTOR1 from Arabidopsis depend upon its direct physical interactions with photoactivated phytochromes
    Hui Shen
    Section of Molecular Cell and Developmental Biology and Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, Texas 78712, USA
    Plant Cell 20:1586-602. 2008
    The phytochrome (phy) family of photoreceptors regulates changes in gene expression in response to red/far-red light signals in part by physically interacting with constitutively nucleus-localized phy-interacting basic helix-loop-helix ..
  31. pmc The Arabidopsis phytochrome-interacting factor PIF7, together with PIF3 and PIF4, regulates responses to prolonged red light by modulating phyB levels
    Pablo Leivar
    Department of Plant and Microbial Biology, University of California, Berkeley, California 94720, USA
    Plant Cell 20:337-52. 2008
    We show that a previously uncharacterized Arabidopsis thaliana basic helix-loop-helix (bHLH) phytochrome interacting factor (PIF), designated PIF7, interacts specifically with the far-red light-absorbing Pfr form of phyB through a ..
  32. ncbi Functional interaction of phytochrome B and cryptochrome 2
    P Mas
    Department of Cell Biology and National Science Foundation Center for Biological Timing, The Scripps Research Institute, La Jolla, California 92037, USA
    Nature 408:207-11. 2000
    ..Using fluorescent resonance energy transfer microscopy, we show that phyB and cry2 interact in nuclear speckles that are formed in a light-dependent fashion...
  33. pmc Phytochrome regulation and differential expression of gibberellin 3beta-hydroxylase genes in germinating Arabidopsis seeds
    S Yamaguchi
    Frontier Research Program, Institute of Physical and Chemical Research RIKEN, Hirosawa 2 1, Wako Shi, Saitama 351 0198, Japan
    Plant Cell 10:2115-26. 1998
    Despite extensive studies on the roles of phytochrome in photostimulated seed germination, the mechanisms downstream of the photoreceptor that promote germination are largely unknown...
  34. ncbi The Arabidopsis COG1 gene encodes a Dof domain transcription factor and negatively regulates phytochrome signaling
    Don Ha Park
    Division of Molecular Life Sciences, Pohang University of Science and Technology, Pohang, Kyungbuk 790 784, Korea
    Plant J 34:161-71. 2003
    ..Expression of the COG1 gene is light inducible and requires phytochrome A (phyA) for FR light-induced expression and phytochrome B (phyB) for R light-induced expression...
  35. pmc The COP1-SPA1 interaction defines a critical step in phytochrome A-mediated regulation of HY5 activity
    Yusuke Saijo
    Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06520, USA
    Genes Dev 17:2642-7. 2003
    ..SPA1 is a repressor of phytochrome A-mediated responses to far-red light...
  36. pmc Direct regulation of phytoene synthase gene expression and carotenoid biosynthesis by phytochrome-interacting factors
    Gabriela Toledo-Ortiz
    Centre for Research in Agricultural Genomics, CSIC IRTA UAB, 08034 Barcelona, Spain
    Proc Natl Acad Sci U S A 107:11626-31. 2010
    ..b>Phytochrome-mediated light signals are major cues regulating carotenoid biosynthesis in plants, but we still lack ..
  37. ncbi A Link between circadian-controlled bHLH factors and the APRR1/TOC1 quintet in Arabidopsis thaliana
    Takafumi Yamashino
    Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University, Chikusa ku, Nagoya, 464 8601 Japan
    Plant Cell Physiol 44:619-29. 2003
    ..e. PIF3 and PIL1, which are PHYTOCHROME INTERACTING FACTOR 3 and its homolog (PIF3-LIKE 1), respectively)...
  38. pmc PIF4, a phytochrome-interacting bHLH factor, functions as a negative regulator of phytochrome B signaling in Arabidopsis
    Enamul Huq
    Department of Plant and Microbial Biology, University of California, Berkeley 94720, USA
    EMBO J 21:2441-50. 2002
    Plants sense and respond to red and far-red light using the phytochrome (phy) family of photoreceptors. However, the mechanism of light signal transduction is not well defined...
  39. pmc Light signal transduction: an infinite spectrum of possibilities
    Joanne Chory
    Plant Biology Laboratory, The Salk Institute for Biological Studies, Howard Hughes Medical Institute, La Jolla, CA 92037, USA
    Plant J 61:982-91. 2010
    ..Importantly, it outlines how genetic studies led to the identification of photoreceptors and signaling components that are not only relevant in plants, but play key roles in mammals...
  40. ncbi PKS1, a substrate phosphorylated by phytochrome that modulates light signaling in Arabidopsis
    C Fankhauser
    Plant Biology Laboratory, Howard Hughes Medical Institute, Salk Institute, La Jolla, CA 92037, USA
    Science 284:1539-41. 1999
    ..A phytochrome binding protein, PKS1 (phytochrome kinase substrate 1), was identified that is a substrate for light-regulated ..
  41. ncbi An unorthodox bacteriophytochrome from Rhodobacter sphaeroides involved in turnover of the second messenger c-di-GMP
    Marina Tarutina
    Department of Molecular Biology, University of Wyoming, Laramie, Wyoming 82071, USA
    J Biol Chem 281:34751-8. 2006
    ..BphG1 therefore is the first phytochrome with a non-kinase photoactivated enzymatic activity...
  42. ncbi Out of the dark: how the PIFs are unmasking a dual temporal mechanism of phytochrome signalling
    Elena Monte
    Departament de Genètica Molecular Vegetal, CSIC IRTA, Barcelona, Spain
    J Exp Bot 58:3125-33. 2007
    ..PIF3 and other PIFs (phytochrome-interacting factors), members of the bHLH (basic helix-loop-helix) family of transcriptional regulators, ..
  43. pmc Phytochromes promote seedling light responses by inhibiting four negatively-acting phytochrome-interacting factors
    Jieun Shin
    Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 305 701, Korea
    Proc Natl Acad Sci U S A 106:7660-5. 2009
    PIF3 is a phytochrome-interacting basic helix-loop-helix transcription factor that negatively regulates light responses, including hypocotyl elongation, cotyledon opening, and hypocotyl negative gravitropism...
  44. ncbi Phytochrome photosensory signalling networks
    Peter H Quail
    Department of Plant and Microbial Biology, University of California, Berkeley, California 94720, USA
    Nat Rev Mol Cell Biol 3:85-93. 2002
    ..Having captured an incoming photon, the activated phytochrome molecule must relay this information to nuclear genes that are poised to respond by directing appropriate ..
  45. ncbi Interaction of the response regulator ARR4 with phytochrome B in modulating red light signaling
    U Sweere
    Institut für Biologie II Botanik, Universitat Freiburg, Schanzlestrasse 1, 79104 Freiburg, Germany
    Science 294:1108-11. 2001
    The Arabidopsis thaliana response regulator 4, expressed in response to phytochrome B action, specifically interacts with the extreme amino-terminus of the photoreceptor...
  46. pmc Nucleotide polymorphism and phenotypic associations within and around the phytochrome B2 Locus in European aspen (Populus tremula, Salicaceae)
    Par K Ingvarsson
    Department of Ecology and Environmental Science, Umea Plant Science Centre, Umea University, SE 901 87 Umea, Sweden
    Genetics 178:2217-26. 2008
    ..With this aim, we surveyed nucleotide polymorphism in 13 fragments spanning an 80-kb region surrounding the phytochrome B2 (phyB2) locus...
  47. pmc Genetic engineering of phytochrome biosynthesis in bacteria
    G A Gambetta
    Section of Molecular and Cellular Biology, University of California, Davis, CA 95616, USA
    Proc Natl Acad Sci U S A 98:10566-71. 2001
    The bilin prosthetic groups of the phytochrome photoreceptors and the light-harvesting phycobiliprotein antennae arise from the oxygen-dependent ring opening of heme...
  48. pmc A Myb-related transcription factor is involved in the phytochrome regulation of an Arabidopsis Lhcb gene
    Z Y Wang
    Department of Molecular, Cellular, and Developmental Biology, University of California, Los Angeles 90095 1606, USA
    Plant Cell 9:491-507. 1997
    ..an Arabidopsis light-harvesting chlorophyll a/b protein gene, Lhcb1*3, which is necessary for its regulation by phytochrome. The CCA1 protein interacted with two imperfect repeats in the Lhcb1*3 promoter, AAA/cAATCT, a sequence that is ..
  49. pmc Circadian clock-regulated expression of phytochrome and cryptochrome genes in Arabidopsis
    R Toth
    Institute of Plant Biology, Biological Research Center of the Hungarian Academy of Sciences, P O Box 521, H 6701 Szeged, Hungary
    Plant Physiol 127:1607-16. 2001
    ..work, we analyzed the spatial, temporal, and long-term light-regulated expression patterns of the Arabidopsis phytochrome (PHYA to PHYE) and cryptochrome (CRY1 and CRY2) promoters fused to the luciferase (LUC(+)) reporter gene...
  50. ncbi Binding of phytochrome B to its nuclear signalling partner PIF3 is reversibly induced by light
    M Ni
    Department of Plant and Microbial Biology, University of California, Berkeley 94720, USA
    Nature 400:781-4. 1999
    The phytochrome photoreceptor family directs plant gene expression by switching between biologically inactive and active conformers in response to the sequential absorption of red and farred photons...
  51. pmc The 14-3-3 Proteins mu and upsilon influence transition to flowering and early phytochrome response
    John D Mayfield
    Plant Molecular and Cellular Biology Program and Horticultural Sciences Department, University of Florida, Gainesville, Florida 32611, USA
    Plant Physiol 145:1692-702. 2007
    ..The long hypocotyl phenotype is consistent with a role for 14-3-3 upsilon and mu in phytochrome B signaling...
  52. pmc Phytochrome C is a key factor controlling long-day flowering in barley
    Hidetaka Nishida
    Graduate School of Environmental and Life Science, Okayama University, Okayama 700 8530, Japan
    Plant Physiol 163:804-14. 2013
    ..This phenotypic difference was controlled by a single gene, which cosegregated only with phytochrome C (HvPhyC) among three candidates around the Vrn-H1 region (Vrn-H1, HvPhyC, and CASEIN KINASE IIα), indicating ..
  53. pmc Isolation and characterization of phyC mutants in Arabidopsis reveals complex crosstalk between phytochrome signaling pathways
    Elena Monte
    Department of Plant and Microbial Biology, University of California, Berkeley, California 94720, USA
    Plant Cell 15:1962-80. 2003
    Studies with mutants in four members of the five-membered Arabidopsis phytochrome (phy) family (phyA, phyB, phyD, and phyE) have revealed differential photosensory and/or physiological functions among them, but identification of a phyC ..
  54. pmc Transposase-derived proteins FHY3/FAR1 interact with PHYTOCHROME-INTERACTING FACTOR1 to regulate chlorophyll biosynthesis by modulating HEMB1 during deetiolation in Arabidopsis
    Weijiang Tang
    Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
    Plant Cell 24:1984-2000. 2012
    ..We reveal that PHYTOCHROME-INTERACTING FACTOR1 physically interacts with the DNA binding domain of FHY3, thereby partly repressing FHY3/..
  55. doi The role of phytochrome in stress tolerance
    Rogério Falleiros Carvalho
    Department of Applied Biology, UNESP, Jaboticabal, SP CEP 14884 900, Brazil
    J Integr Plant Biol 53:920-9. 2011
    ..Evidence for a role of phytrochromes in plant stress tolerance is explored and reviewed...
  56. ncbi Cyanobacterial phytochrome-like PixJ1 holoprotein shows novel reversible photoconversion between blue- and green-absorbing forms
    Shizue Yoshihara
    Department of Life Sciences Biology, University of Tokyo, Komaba 3 8 1, Meguro, Tokyo, 153 8902 Japan
    Plant Cell Physiol 45:1729-37. 2004
    The gene, pixJ1 (formerly pisJ1), is predicted to encode a phytochrome-like photoreceptor that is essential for positive phototaxis in the unicellular cyanobacterium Synechocystis sp. PCC 6803 [Yoshihara et al. (2000) Plant Cell Physiol...
  57. ncbi A light-sensing knot revealed by the structure of the chromophore-binding domain of phytochrome
    Jeremiah R Wagner
    Department of Genetics, University of Wisconsin Madison, Madison, Wisconsin 53706 USA
    Nature 438:325-31. 2005
    ..Here we describe the three-dimensional structure of the chromophore-binding domain of Deinococcus radiodurans phytochrome assembled with its chromophore biliverdin in the Pr ground state. Our model, refined to 2...
  58. doi Phytochrome: structural basis for its functions
    Akira Nagatani
    Department of Botany, Graduate School of Science, Kyoto University, Sakyo ku, Kyoto 606 8502, Japan
    Curr Opin Plant Biol 13:565-70. 2010
    b>Phytochrome mediates various physiological as well as developmental responses to light stimuli in plants. Phytochrome is a soluble chromoprotein consisting of the N-terminal photosensory and C-terminal dimerization moieties...
  59. pmc Interactions between ethylene and gibberellins in phytochrome-mediated shade avoidance responses in tobacco
    Ronald Pierik
    Department of Experimental Plant Ecology, Radboud University Nijmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands
    Plant Physiol 136:2928-36. 2004
    ..Plants respond to proximate neighbors with a suite of responses that comprise the shade avoidance syndrome. These phytochrome-mediated responses include hyponasty (i.e...
  60. ncbi Comparative sequence analysis of the phytochrome C gene and its upstream region in allohexaploid wheat reveals new data on the evolution of its three constituent genomes
    Katrien M Devos
    John Innes Centre, Norwich Research Park, Colney, Norwich, NR4 7UH, UK
    Plant Mol Biol 58:625-41. 2005
    Bread wheat is an allohexaploid with genome composition AABBDD. Phytochrome C is a gene involved in photomorphogenesis that has been used extensively for phylogenetic analyses...
  61. pmc Conformational differences between the Pfr and Pr states in Pseudomonas aeruginosa bacteriophytochrome
    Xiaojing Yang
    Department of Biochemistry and Molecular Biology, University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA
    Proc Natl Acad Sci U S A 106:15639-44. 2009
    ..We propose a "flip-and-rotate" model that summarizes the major conformational differences between the Pr and Pfr states of the chromophore and its binding pocket...
  62. pmc Functional characterization of phytochrome interacting factor 3 in phytochrome-mediated light signal transduction
    Jonghyun Kim
    Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 305 701, Korea
    Plant Cell 15:2399-407. 2003
    ..regulate various light responses through their interactions with different signaling proteins, such as phytochrome interacting factor 3 (PIF3)...
  63. pmc UV-B signaling pathways with different fluence-rate response profiles are distinguished in mature Arabidopsis leaf tissue by requirement for UVR8, HY5, and HYH
    Bobby A Brown
    Plant Science Group, Division of Biochemistry and Molecular Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow G12 8QQ, United Kingdom
    Plant Physiol 146:576-88. 2008
    ..This research provides evidence that, in UV-B signaling, UVR8, HY5, and HYH act together in a photoregulatory pathway and demonstrates a new role for HYH in UV-B responses...
  64. pmc Regulation of transcript levels of a potato gibberellin 20-oxidase gene by light and phytochrome B
    S D Jackson
    Horticulture Research International, Wellesbourne, Warwick CV35 9EF, United Kingdom
    Plant Physiol 124:423-30. 2000
    ..that levels of StGA20ox1 transcript are elevated in transgenic antisense plants that have reduced levels of phytochrome B (PHYB) compared with wild-type plants, implicating PHYB in the control of GA biosynthesis...
  65. pmc Far-red light photoactivatable near-infrared fluorescent proteins engineered from a bacterial phytochrome
    Kiryl D Piatkevich
    Department of Anatomy and Structural Biology, Gruss Lipper Biophotonics Center, Albert Einstein College of Medicine, Bronx, New York 10461, USA
    Nat Commun 4:2153. 2013
    ....
  66. ncbi Photoreceptor proteins, "star actors of modern times": a review of the functional dynamics in the structure of representative members of six different photoreceptor families
    Michael A van der Horst
    Laboratory for Microbiology, Swammerdam Institute for Life Sciences, BioCentrum Amsterdam, University of Amsterdam, NL 1018 WV Amsterdam, The Netherlands
    Acc Chem Res 37:13-20. 2004
    ..Some members of the rhodopsins, the xanthopsins, and the phototropins are so well characterized that they function as model systems to study (receptor) protein dynamics and (un)folding...
  67. pmc The phytochrome-interacting transcription factor, PIF3, acts early, selectively, and positively in light-induced chloroplast development
    Elena Monte
    Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
    Proc Natl Acad Sci U S A 101:16091-8. 2004
    The phytochrome (phy) family of sensory photoreceptors transduce informational light signals to selected nuclear genes, inducing plant growth and developmental responses appropriate to the environment...
  68. doi Phytochrome structure and photochemistry: recent advances toward a complete molecular picture
    Andrew T Ulijasz
    Department of Biological Sciences, 3209 North Maryland Avenue, University of Wisconsin Milwaukee, Milwaukee, WI 53211, USA
    Curr Opin Plant Biol 14:498-506. 2011
    ..The models point toward a largely unifying mechanism whereby novel knot, hairpin, and dimeric interfaces transduce photoreversible bilin isomerization into protein conformational changes that alter signal output...
  69. ncbi A new type of bacteriophytochrome acts in tandem with a classical bacteriophytochrome to control the antennae synthesis in Rhodopseudomonas palustris
    Eric Giraud
    Laboratoire des Symbioses Tropicales et Méditerranéennes, IRD, CIRAD, AGRO M, INRA, UM2, TA 10 J, Campus de Baillarguet, Montpellier France
    J Biol Chem 280:32389-97. 2005
    ....
  70. pmc PIL5, a phytochrome-interacting basic helix-loop-helix protein, is a key negative regulator of seed germination in Arabidopsis thaliana
    Eunkyoo Oh
    Department of Biological Sciences, KAIST, Daejeon 305 701, Korea
    Plant Cell 16:3045-58. 2004
    ..the PIF3-like 5 (PIL5) protein, a basic helix-loop-helix transcription factor, is a key negative regulator of phytochrome-mediated seed germination...
  71. pmc Involvement of auxin and brassinosteroid in the regulation of petiole elongation under the shade
    Toshiaki Kozuka
    Department of Botany, Graduate School of Science, Kyoto University, Sakyo ku, Kyoto 606 8502, Japan
    Plant Physiol 153:1608-18. 2010
    ..In addition, the spotlight irradiation experiment revealed that phytochrome in leaf blades but not that in petioles regulated petiole elongation, which was probably mediated through ..
  72. ncbi SPA1, a WD-repeat protein specific to phytochrome A signal transduction
    U Hoecker
    Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA 94720, USA
    Science 284:496-9. 1999
    The five members of the phytochrome photoreceptor family of Arabidopsis thaliana control morphogenesis differentially in response to light...
  73. pmc A phytochrome-phototropin light signaling complex at the plasma membrane
    Katharina Jaedicke
    Plant Physiology, Justus Liebig University, Giessen, Germany
    Proc Natl Acad Sci U S A 109:12231-6. 2012
    ..Various phytochrome effects are manifested much too rapidly to derive from changes in gene expression, whereas others seem to occur ..
  74. pmc Mutant analyses define multiple roles for phytochrome C in Arabidopsis photomorphogenesis
    Keara A Franklin
    Department of Biology, University of Leicester, Leicester LE1 7RH, United Kingdom
    Plant Cell 15:1981-9. 2003
    The analysis of Arabidopsis mutants deficient in the A, B, D, and E phytochromes has revealed that each of these phytochrome isoforms has both distinct and overlapping roles throughout plant photomorphogenesis...
  75. pmc HFR1 encodes an atypical bHLH protein that acts in phytochrome A signal transduction
    C D Fairchild
    Department of Plant and Microbial Biology, University of California, Berkeley, California 94720, USA
    Genes Dev 14:2377-91. 2000
    ..These adaptations are effected primarily through phytochrome regulation of gene expression by mechanisms that remain unclear...
  76. doi Bacterial phytochromes: more than meets the light
    Michele E Auldridge
    Department of Bacteriology, University of Wisconsin Madison, Madison, WI 53706, USA
    Crit Rev Biochem Mol Biol 46:67-88. 2011
    ..The phytochrome composition is modular, typically consisting of a PAS-GAF-PHY architecture for the N-terminal photosensory core...
  77. pmc Two ground state isoforms and a chromophore D-ring photoflip triggering extensive intramolecular changes in a canonical phytochrome
    Chen Song
    Leids Instituut voor Chemisch Onderzoek, Universiteit Leiden, P O Box 9502, 2300 RA Leiden, The Netherlands
    Proc Natl Acad Sci U S A 108:3842-7. 2011
    b>Phytochrome photoreceptors mediate light responses in plants and in many microorganisms. Here we report studies using (1)H-(13)C magic-angle spinning NMR spectroscopy of the sensor module of cyanobacterial phytochrome Cph1...
  78. doi Phytochrome interacting factors (PIFs) are essential regulators for sucrose-induced hypocotyl elongation in Arabidopsis
    Zhongjuan Liu
    Key Laboratory of Arid and Grassland Agroecology Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou Gansu 730000, People s Republic of China
    J Plant Physiol 168:1771-9. 2011
    b>Phytochrome interacting factors (PIFs) are members of a subfamily of basic helix-loop-helix transcript factors and have been proposed to act as positive regulators of hypocotyl elongation under normal condition...
  79. pmc A dynamic balance between gene activation and repression regulates the shade avoidance response in Arabidopsis
    Giovanna Sessa
    Institute of Molecular Biology and Pathology, National Research Council, 00185 Rome, Italy
    Genes Dev 19:2811-5. 2005
    Plants grown under dense canopies perceive through the phytochrome system a reduction in the ratio of red to far-red light as a warning of competition, and this triggers a series of morphological changes to avoid shade...
  80. ncbi Light signalling mediated by phytochrome plays an important role in cold-induced gene expression through the C-repeat/dehydration responsive element (C/DRE) in Arabidopsis thaliana
    Hyoun Joung Kim
    Kumho Life and Environmental Science Laboratory, Puk Gu, Gwang Ju, Korea
    Plant J 29:693-704. 2002
    ..Photo-reversibility of the GUS mRNA by red and far-red light with concomitant cold treatment suggests a role of phytochrome as a photoreceptor in mediating light signalling to activate the cold-induced gene expression through the C/DRE...
  81. ncbi The phytochrome A-specific signaling intermediate SPA1 interacts directly with COP1, a constitutive repressor of light signaling in Arabidopsis
    U Hoecker
    Institut für Entwicklungs und Molekularbiologie der Pflanzen, University of Dusseldorf, Building 26 03 02, D 40225 Dusseldorf, Germany
    J Biol Chem 276:38173-8. 2001
    SPA1 is a phytochrome A (phyA)-specific signaling intermediate that acts as a light-dependent repressor of photomorphogenesis in Arabidopsis seedlings...
  82. pmc Temperature-scan cryocrystallography reveals reaction intermediates in bacteriophytochrome
    Xiaojing Yang
    Department of Biochemistry and Molecular Biology, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, USA
    Nature 479:428-32. 2011
    ..These data indicate that absorption of a photon by the Pfr state of PaBphP converts a light signal into a structural signal via twisting and untwisting of the methine bridges in the linear tetrapyrrole within the confined protein cavity...
  83. doi Light-induced activation of bacterial phytochrome Agp1 monitored by static and time-resolved FTIR spectroscopy
    Patrick Piwowarski
    Institut fur Medizinische Physik und Biophysik, Charite, Universitatsmedizin Berlin, Chariteplatz 1, 10098 Berlin, Germany
    Chemphyschem 11:1207-14. 2010
    ..We employ this technique to monitor, for the first time, the dynamics of the photocycle of phytochrome on the millisecond timescale...
  84. pmc SOMNUS, a CCCH-type zinc finger protein in Arabidopsis, negatively regulates light-dependent seed germination downstream of PIL5
    Dong Hwan Kim
    Department of Biological Sciences, KAIST, Daejeon 305 701, Korea
    Plant Cell 20:1260-77. 2008
    ..thaliana modulates abscisic acid (ABA) and gibberellic acid (GA) signaling pathways at least partly via PHYTOCHROME-INTERACTING FACTOR3-LIKE5 (PIL5), a phytochrome-interacting basic helix-loop-helix transcription factor...
  85. pmc Arabidopsis FHY3/FAR1 gene family and distinct roles of its members in light control of Arabidopsis development
    Rongcheng Lin
    Boyce Thompson Institute for Plant Research, Cornell University, Ithaca, New York 14853, USA
    Plant Physiol 136:4010-22. 2004
    ..far-red elongated hypocotyls 3) and FAR1 (far-red-impaired response) are two homologous proteins essential for phytochrome A controlled far-red responses in Arabidopsis (Arabidopsis thaliana)...
  86. ncbi Photosensing in chemotrophic, non-phototrophic bacteria: let there be light sensing too
    Michael A van der Horst
    Laboratory for Microbiology, Swammerdam Institute for Life Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
    Trends Microbiol 15:554-62. 2007
    ..Here we review the state of the art in this field. Because light signals can be manipulated accurately, these photoreceptors might help provide a systems-level understanding of the cytology of bacteria...
  87. ncbi The rosette habit of Arabidopsis thaliana is dependent upon phytochrome action: novel phytochromes control internode elongation and flowering time
    P F Devlin
    Department of Botany, University of Leicester, UK
    Plant J 10:1127-34. 1996
    ..b>Phytochrome B-deficient (phyB) mutants, which have a constitutive elongated-petiole and early-flowering pheno-type, do not ..
  88. pmc A brief history of phytochromes
    Nathan C Rockwell
    Department of Molecular and Cell Biology, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
    Chemphyschem 11:1172-80. 2010
    ..Despite this spectral diversity, all members of the extended family of phytochrome photosensors appear to share a common photochemical mechanism for light sensing: photoisomerization of the 15/..
  89. doi Rice JASMONATE RESISTANT 1 is involved in phytochrome and jasmonate signalling
    Maren Riemann
    National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305 8602, Japan
    Plant Cell Environ 31:783-92. 2008
    ..The analysis of OsJar1 expression in phytochrome (phy) mutants revealed that phytochrome A (phyA) and phytochrome B (phyB) act redundantly to induce this gene ..
  90. ncbi Making light of it: the role of plant haem oxygenases in phytochrome chromophore synthesis
    M J Terry
    School of Biological Sciences, University of Southampton, Bassett Crescent East, Southampton SO16 7PX, UK
    Biochem Soc Trans 30:604-9. 2002
    ..In plants, HOs are required for the synthesis of the chromophore of the phytochrome family of photoreceptors. There are four HO genes in the Arabidopsis genome...
  91. ncbi Direct targeting of light signals to a promoter element-bound transcription factor
    J F Martínez-García
    Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
    Science 288:859-63. 2000
    Light signals perceived by the phytochrome family of sensory photoreceptors are transduced to photoresponsive genes by an unknown mechanism...
  92. pmc Photoactivated phytochromes interact with HEMERA and promote its accumulation to establish photomorphogenesis in Arabidopsis
    Rafaelo M Galvão
    Department of Biology, Duke University, Durham, North Carolina 27708, USA
    Genes Dev 26:1851-63. 2012
    ..Early phytochrome signaling events include the translocation of phytochromes from the cytoplasm to subnuclear domains called ..
  93. ncbi The GRAS protein SCL13 is a positive regulator of phytochrome-dependent red light signaling, but can also modulate phytochrome A responses
    Patricia Torres-Galea
    Department für Biologie I Bereich Botanik, Ludwig Maximilians University, Menzinger Str 67, 80638, Munich, Germany
    Mol Genet Genomics 276:13-30. 2006
    b>Phytochrome photoreceptors enable plants to perceive divergent light signals leading to adaptive changes in response to differing environmental conditions. However, the mechanism of light signal transduction is not fully understood...
  94. ncbi The VLF loci, polymorphic between ecotypes Landsberg erecta and Columbia, dissect two branches of phytochrome A signal transduction that correspond to very-low-fluence and high-irradiance responses
    M J Yanovsky
    Departamento de Ecologia, Facultad de Agronomia, Universidad de Buenos Aires, Argentina
    Plant J 12:659-67. 1997
    Phytochromes play a key role in the perception of light signals by plants. In this study, the three classical phytochrome action modes, i.e...
  95. pmc The basic helix-loop-helix transcription factor PIF5 acts on ethylene biosynthesis and phytochrome signaling by distinct mechanisms
    Rajnish Khanna
    Department of Plant and Microbial Biology, University of California, Berkeley, California 94720, USA
    Plant Cell 19:3915-29. 2007
    b>PHYTOCHROME-INTERACTING FACTOR5 (PIF5), a basic helix-loop-helix transcription factor, interacts specifically with the photoactivated form of phytochrome B (phyB)...
  96. ncbi Genetic linkages between circadian clock-associated components and phytochrome-dependent red light signal transduction in Arabidopsis thaliana
    Shogo Ito
    Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University, Chikusa ku, Nagoya, 464 8601 Japan
    Plant Cell Physiol 48:971-83. 2007
    ..It is further suggested that these signaling pathways are coordinately integrated into the phytochrome-mediated red light signal transduction pathway, in which PIF3 (PHYTOCHROME-INTERACTING FACTOR 3) functions as a ..
  97. ncbi ELF4 is a phytochrome-regulated component of a negative-feedback loop involving the central oscillator components CCA1 and LHY
    Elise A Kikis
    Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
    Plant J 44:300-13. 2005
    ..Taken together, the data suggest (a) that ELF3, ELF4, and TOC1 all function in the primary, phytochrome-mediated light-input pathway to the circadian oscillator in Arabidopsis; and (b) that this oscillator consists ..
  98. pmc The negatively acting factors EID1 and SPA1 have distinct functions in phytochrome A-specific light signaling
    Yong Chun Zhou
    Albert Ludwigs Universitat Freiburg, Institut für Biologie 2 Botanik, Schanzlestrasse 1, D 79104 Freiburg, Germany
    Plant Physiol 128:1098-108. 2002
    EID1 (empfindlicher im dunkelroten Licht) and SPA1 (suppressor of phytochrome A[phyA]-105) function as negatively acting components in phyA-specific light signaling...
  99. pmc EID1, an F-box protein involved in phytochrome A-specific light signaling
    M Dieterle
    Universitat Freiburg, Institut für Biologie 2 Botanik, D 79104 Freiburg, Germany
    Genes Dev 15:939-44. 2001
    ..we describe EID1, a negatively acting component of the signaling cascade that shifts the responsiveness of the phytochrome A (phyA) signaling system associated with hypocotyl elongation from red to far-red wavelengths...
  100. pmc Multiple heme oxygenase family members contribute to the biosynthesis of the phytochrome chromophore in Arabidopsis
    Thomas J Emborg
    Department of Genetics, University of Wisconsin, Madison, 53706, USA
    Plant Physiol 140:856-68. 2006
    ..heme by heme oxygenases (HOs) to form biliverdin IXalpha (BV) is the committed step in the biosynthesis of the phytochrome (phy) chromophore and thus essential for proper photomorphogenesis in plants...
  101. pmc The structure of a complete phytochrome sensory module in the Pr ground state
    Lars Oliver Essen
    Structural Biochemistry, Department of Chemistry, Philipps University, Hans Meerwein Strasse, D 35032 Marburg, Germany
    Proc Natl Acad Sci U S A 105:14709-14. 2008
    ..However, the structure/functional basis of the phytochrome photoswitch is still unclear...

Research Grants27

  1. Phytochrome A: Structure/Function and Signaling Pathways
    Peter H Quail; Fiscal Year: 2013
    DESCRIPTION (provided by applicant): The perception of informational light signals by the five-membered phytochrome (phy) family of sensory photoreceptors (phyA through phyE) initiates an intracellular transduction process that ..
  2. INITIAL EVENTS IN PHOTORECEPTOR SIGNALING
    Joanne Chory; Fiscal Year: 2013
    ..The proposed studies aim to understand how one photoreceptor, phytochrome B (PHYB), influences the development of plants that are in competition with other plants for light...
  3. Genetic Biochemical Studies of Plant Steroid Signaling
    Zhiyong Wang; Fiscal Year: 2013
    ..of integration of the BR and light signaling pathways, by characterizing the interaction between BZR1 and the phytochrome- interacting factors (PIFs) in regulating common target genes, and the functions of three BZR1-target ..
  4. Genetic characterization of phytochrome nuclear bodies in plant light signaling
    Meng Chen; Fiscal Year: 2013
    ..The long- term goal of our laboratory is to use phytochrome NBs in Arabidopsis as a genetic model to investigate general principles of NB function in eukaryotic cell ..
  5. Molecular Mechanisms of Phytochrome Signaling
    JOHN CLARK LAGARIAS; Fiscal Year: 2013
    DESCRIPTION (provided by applicant): This project, entitled "Molecular Mechanisms of Phytochrome Signaling" (PI J. Clark Lagarias, UC Davis), focuses on gaining fundamental knowledge about the phytochrome family of protein light sensors...
  6. ANALYSIS OF A LIGHT-REGULATED DEVELOPMENT SWITCH
    Xing Wang Deng; Fiscal Year: 2013
    ..We further established that phosphorylation events in phytochrome A and its downstream partner FHY1 play critical roles in far red light control of development and their ..
  7. A Toolkit for Light-Control of Molecular Processes in Living Cells
    ORION DAVID WEINER; Fiscal Year: 2013
    ..the use of a new genetically encoded light-control protein-protein interaction switch, derived from the phytochrome signaling network of Arabidopsis thaliana...
  8. GENETIC DISSECTION OF PHYTOCHROME B SIGNALLING
    Jason Reed; Fiscal Year: 1999
    ..Mutations in the PHYB gene, encoding the red/far-red photoreceptor phytochrome B, cause several developmental phenotypes including elongated hypocotyls, early flowering, and increased apical ..
  9. LIGHT RESPONSIVE GENES
    Nam Hai Chua; Fiscal Year: 2007
    ..Arabidopsis contains several photoreceptors that measure photons at different wavelengths. Amongst these, phytochrome A (phyA), which is activated by far-red (FR) light, plays a major role in seedling deetiolation...
  10. SYNTHESIS AND STUDY OF BIOLOGICALLY ACTIVE TETRAPYRROLES
    PETER JACOBI; Fiscal Year: 2005
    ..b>Phytochrome (Pr) is a linear tetrapyrrole that serves as the "on-off" switch in photomorphogenesis...
  11. Chloroplast to Nucleus Signaling by use of Tetrapyrroles
    JESSE WOODSON; Fiscal Year: 2007
    ..chloroplast, are signal inputs for at least two distinct pathways that regulate gene expression in the nucleus (phytochrome and GUN signaling pathways, respectively)...
  12. Light Signaling Connectivity in Arabidopsis
    Joanne Chory; Fiscal Year: 2006
    ..chips we will identify transcripts whose abundance is controlled synergistically by the photoreceptors, phytochrome B (PHYB) and cryptochrome 1 (CRY1), in detailed kinetic experiments...
  13. STRUCTURE AND FUNCTION OF THE LIGHT SWITCH PHYTOCHROME
    Pill Soon Song; Fiscal Year: 2000
    Plants possess a highly sensitive molecular light swith phytochrome. Red wavelength light activates the Pr form of the photoswitch molecule, which is converted to the Pfr form by the red light absorbed...
  14. Interaction of Cytokinin and Light Signaling
    BRIDEY MAXWELL; Fiscal Year: 2004
    ..response assays; (2) test the potential role of cytokinin induced genes in stabilization of the active form of phytochrome and identify new factors potentially involved in cross-talk between the light and cytokinin signaling pathways; ..
  15. FASEB CONF--UBIQUITIN, INTRACELLULAR PROTEIN DEGRADATION
    Richard Vierstra; Fiscal Year: 1993
    ..for controlling the levels of many key developmental regulators including: cyclins, MATalpha2 repressor, phytochrome, and a variety of oncogene products including p53...
  16. Circadian Gating of Signals by EARLY FLOWERING 3
    Bryan Thines; Fiscal Year: 2009
    ..The specific aims of this proposal are to: 1) Determine whether physical interaction with phytochrome B (phyB) is critical to ELF3 function...
  17. SHY2/IAA3 in auxin regulation of plant development
    Jason Reed; Fiscal Year: 2006
    ..These experiments will help us understand how auxin regulates development in a model system, and will in the future allow manipulation of morphology of crop plants in ways beneficial to human health. ..
  18. Genetically Encoded Phototriggers of Neuronal Activity
    GERO MIESENBOECK; Fiscal Year: 2006
    ..abstract_text> ..
  19. Spectral Triangulation Molecular Contrast OCT
    Changhuei Yang; Fiscal Year: 2005
    ..abstract_text> ..
  20. Vernalization a cold-induced regulatory network establishing cellular memory
    Richard M Amasino; Fiscal Year: 2010
    ..A general understanding of epigenetic regulation in a range of multi-cellular organisms should ultimately contribute to the development of strategies to treat disease states. ..
  21. Molecular Mechanisms of Natural Variation in Arabidopsis
    Joanne Chory; Fiscal Year: 2008
    ..thaliana. These studies will set the stage for future, larger-scale investigations. ..
  22. Neural Ensemble Codes in Drosophila Olfaction
    GERO MIESENBOECK; Fiscal Year: 2007
    ..abstract_text> ..
  23. The molecular basis of reproductive isolation
    STUART MCDANIEL; Fiscal Year: 2007
    ..The identification of molecular variants underlying complex traits, like reproductive isolation, opens several new avenues of research into the specific mechanisms of adaptation and speciation. [unreadable] [unreadable]..
  24. PHOTOREGULATORY SIGNAL TRANSDUCTION
    ANTHONY CASHMORE; Fiscal Year: 2006
    ..abstract_text> ..
  25. Optofluidic Microscope
    Changhuei Yang; Fiscal Year: 2007
    ..elegans phenotyping. With the completion of the proposed research, we expect the technology will be sufficiently refined to tackle a wide range of basic research and biomedicine challenges. [unreadable] [unreadable] [unreadable]..