PHYB

Summary

Gene Symbol: PHYB
Description: phytochrome B
Alias: HY3, MSF3.17, MSF3_17, OOP1, OUT OF PHASE 1, PHYTOCHROME B, phytochrome B, phytochrome B
Species: thale cress
Products:     PHYB

Top Publications

  1. Ni M, Tepperman J, Quail P. PIF3, a phytochrome-interacting factor necessary for normal photoinduced signal transduction, is a novel basic helix-loop-helix protein. Cell. 1998;95:657-67 pubmed
    ..PIF3 binds to wild-type C-terminal domains of both phyA and phyB, but less strongly to signaling-defective, missense mutant-containing domains...
  2. Moreno J, Tao Y, Chory J, Ballaré C. Ecological modulation of plant defense via phytochrome control of jasmonate sensitivity. Proc Natl Acad Sci U S A. 2009;106:4935-40 pubmed publisher
    ..We conclude that the plant modulates its investment in defense as a function of the perceived risk of competition, and that this modulation is effected by phytochrome via selective desensitization to jasmonates. ..
  3. Su Y, Lagarias J. Light-independent phytochrome signaling mediated by dominant GAF domain tyrosine mutants of Arabidopsis phytochromes in transgenic plants. Plant Cell. 2007;19:2124-39 pubmed
    ..Through expression of profluorescent, photoinsensitive Tyr-to-His mutant alleles of Arabidopsis thaliana phytochrome B (PHYB(Y276H)) and Arabidopsis phytochrome A (PHYA(Y242H)) in transgenic Arabidopsis plants, we demonstrate ..
  4. Fairchild C, Schumaker M, Quail P. HFR1 encodes an atypical bHLH protein that acts in phytochrome A signal transduction. Genes Dev. 2000;14:2377-91 pubmed
    ..In contrast to PIF3, a related bHLH protein previously shown to bind phyB, HFR1 did not bind either phyA or B...
  5. Rausenberger J, Hussong A, Kircher S, Kirchenbauer D, Timmer J, Nagy F, et al. An integrative model for phytochrome B mediated photomorphogenesis: from protein dynamics to physiology. PLoS ONE. 2010;5:e10721 pubmed publisher
    ..We have developed an integrative mathematical model that describes how phytochrome B (phyB), an essential receptor in Arabidopsis thaliana, controls growth...
  6. Sweere U, Eichenberg K, Lohrmann J, Mira Rodado V, Bäurle I, Kudla J, et al. Interaction of the response regulator ARR4 with phytochrome B in modulating red light signaling. Science. 2001;294:1108-11 pubmed
    The Arabidopsis thaliana response regulator 4, expressed in response to phytochrome B action, specifically interacts with the extreme amino-terminus of the photoreceptor...
  7. Yamaguchi R, Nakamura M, Mochizuki N, Kay S, Nagatani A. Light-dependent translocation of a phytochrome B-GFP fusion protein to the nucleus in transgenic Arabidopsis. J Cell Biol. 1999;145:437-45 pubmed
    ..nuclear localization signal may reside within the COOH-terminal region of a major member of the family, phytochrome B (phyB) (Sakamoto, K., and A. Nagatani. 1996. Plant J. 10:859-868)...
  8. Filiault D, Wessinger C, DINNENY J, Lutes J, Borevitz J, Weigel D, et al. Amino acid polymorphisms in Arabidopsis phytochrome B cause differential responses to light. Proc Natl Acad Sci U S A. 2008;105:3157-62 pubmed publisher
    ..In Arabidopsis thaliana, phytochrome B (PHYB) is the dominant photoreceptor for red light and plays a major role in white light...
  9. Khanna R, Shen Y, Marion C, Tsuchisaka A, Theologis A, Schafer E, et al. The basic helix-loop-helix transcription factor PIF5 acts on ethylene biosynthesis and phytochrome signaling by distinct mechanisms. Plant Cell. 2007;19:3915-29 pubmed
    ..PIF5), a basic helix-loop-helix transcription factor, interacts specifically with the photoactivated form of phytochrome B (phyB)...
  10. Chen M, Tao Y, Lim J, Shaw A, Chory J. Regulation of phytochrome B nuclear localization through light-dependent unmasking of nuclear-localization signals. Curr Biol. 2005;15:637-42 pubmed
    ..Using Arabidopsis phyB as a model, we demonstrate that the C-terminal PAS-related domain (PRD) is both necessary and sufficient for phyB ..

Scientific Experts

Detail Information

Publications62

  1. Ni M, Tepperman J, Quail P. PIF3, a phytochrome-interacting factor necessary for normal photoinduced signal transduction, is a novel basic helix-loop-helix protein. Cell. 1998;95:657-67 pubmed
    ..PIF3 binds to wild-type C-terminal domains of both phyA and phyB, but less strongly to signaling-defective, missense mutant-containing domains...
  2. Moreno J, Tao Y, Chory J, Ballaré C. Ecological modulation of plant defense via phytochrome control of jasmonate sensitivity. Proc Natl Acad Sci U S A. 2009;106:4935-40 pubmed publisher
    ..We conclude that the plant modulates its investment in defense as a function of the perceived risk of competition, and that this modulation is effected by phytochrome via selective desensitization to jasmonates. ..
  3. Su Y, Lagarias J. Light-independent phytochrome signaling mediated by dominant GAF domain tyrosine mutants of Arabidopsis phytochromes in transgenic plants. Plant Cell. 2007;19:2124-39 pubmed
    ..Through expression of profluorescent, photoinsensitive Tyr-to-His mutant alleles of Arabidopsis thaliana phytochrome B (PHYB(Y276H)) and Arabidopsis phytochrome A (PHYA(Y242H)) in transgenic Arabidopsis plants, we demonstrate ..
  4. Fairchild C, Schumaker M, Quail P. HFR1 encodes an atypical bHLH protein that acts in phytochrome A signal transduction. Genes Dev. 2000;14:2377-91 pubmed
    ..In contrast to PIF3, a related bHLH protein previously shown to bind phyB, HFR1 did not bind either phyA or B...
  5. Rausenberger J, Hussong A, Kircher S, Kirchenbauer D, Timmer J, Nagy F, et al. An integrative model for phytochrome B mediated photomorphogenesis: from protein dynamics to physiology. PLoS ONE. 2010;5:e10721 pubmed publisher
    ..We have developed an integrative mathematical model that describes how phytochrome B (phyB), an essential receptor in Arabidopsis thaliana, controls growth...
  6. Sweere U, Eichenberg K, Lohrmann J, Mira Rodado V, Bäurle I, Kudla J, et al. Interaction of the response regulator ARR4 with phytochrome B in modulating red light signaling. Science. 2001;294:1108-11 pubmed
    The Arabidopsis thaliana response regulator 4, expressed in response to phytochrome B action, specifically interacts with the extreme amino-terminus of the photoreceptor...
  7. Yamaguchi R, Nakamura M, Mochizuki N, Kay S, Nagatani A. Light-dependent translocation of a phytochrome B-GFP fusion protein to the nucleus in transgenic Arabidopsis. J Cell Biol. 1999;145:437-45 pubmed
    ..nuclear localization signal may reside within the COOH-terminal region of a major member of the family, phytochrome B (phyB) (Sakamoto, K., and A. Nagatani. 1996. Plant J. 10:859-868)...
  8. Filiault D, Wessinger C, DINNENY J, Lutes J, Borevitz J, Weigel D, et al. Amino acid polymorphisms in Arabidopsis phytochrome B cause differential responses to light. Proc Natl Acad Sci U S A. 2008;105:3157-62 pubmed publisher
    ..In Arabidopsis thaliana, phytochrome B (PHYB) is the dominant photoreceptor for red light and plays a major role in white light...
  9. Khanna R, Shen Y, Marion C, Tsuchisaka A, Theologis A, Schafer E, et al. The basic helix-loop-helix transcription factor PIF5 acts on ethylene biosynthesis and phytochrome signaling by distinct mechanisms. Plant Cell. 2007;19:3915-29 pubmed
    ..PIF5), a basic helix-loop-helix transcription factor, interacts specifically with the photoactivated form of phytochrome B (phyB)...
  10. Chen M, Tao Y, Lim J, Shaw A, Chory J. Regulation of phytochrome B nuclear localization through light-dependent unmasking of nuclear-localization signals. Curr Biol. 2005;15:637-42 pubmed
    ..Using Arabidopsis phyB as a model, we demonstrate that the C-terminal PAS-related domain (PRD) is both necessary and sufficient for phyB ..
  11. Yang H, Tang R, Cashmore A. The signaling mechanism of Arabidopsis CRY1 involves direct interaction with COP1. Plant Cell. 2001;13:2573-87 pubmed
    ..An interaction also was observed between the C-terminal domain of Arabidopsis phytochrome B and COP1, suggesting that phytochrome signaling also proceeds, at least in part, through direct interaction ..
  12. Endo M, Nakamura S, Araki T, Mochizuki N, Nagatani A. Phytochrome B in the mesophyll delays flowering by suppressing FLOWERING LOCUS T expression in Arabidopsis vascular bundles. Plant Cell. 2005;17:1941-52 pubmed
    ..b>Phytochrome B (phyB) acts as a photoreceptor for this response...
  13. Correll M, Kiss J. The roles of phytochromes in elongation and gravitropism of roots. Plant Cell Physiol. 2005;46:317-23 pubmed
    ..The importance of phytochromes A and B (phyA and phyB) in these red light responses has been established through studies using phy mutants...
  14. Castillon A, Shen H, Huq E. Blue light induces degradation of the negative regulator phytochrome interacting factor 1 to promote photomorphogenic development of Arabidopsis seedlings. Genetics. 2009;182:161-71 pubmed publisher
    ..PIF1 interacted with phyA and phyB in a blue light-dependent manner, and the interactions with phys are necessary for the blue light-induced ..
  15. Bauer D, Viczian A, Kircher S, Nobis T, Nitschke R, Kunkel T, et al. Constitutive photomorphogenesis 1 and multiple photoreceptors control degradation of phytochrome interacting factor 3, a transcription factor required for light signaling in Arabidopsis. Plant Cell. 2004;16:1433-45 pubmed
    ..induces nuclear import of the plant photoreceptors phytochrome, promotes interaction of phytochrome A (phyA) and phyB with transcription factors including phytochrome interacting factor 3 (PIF3), and is thought to trigger a ..
  16. Huq E, Al Sady B, Hudson M, Kim C, Apel K, Quail P. Phytochrome-interacting factor 1 is a critical bHLH regulator of chlorophyll biosynthesis. Science. 2004;305:1937-41 pubmed
    ....
  17. Palágyi A, Terecskei K, Adam E, Kevei E, Kircher S, Mérai Z, et al. Functional analysis of amino-terminal domains of the photoreceptor phytochrome B. Plant Physiol. 2010;153:1834-45 pubmed publisher
    ..b>Phytochrome B (PHYB) is the major red/far-red light-absorbing phytochrome receptor in light-grown plants...
  18. Shin D, Cho M, Kim T, Yoo J, Kim J, Han Y, et al. A small GTPase activator protein interacts with cytoplasmic phytochromes in regulating root development. J Biol Chem. 2010;285:32151-9 pubmed publisher
    ..In addition, both PIRF1 overexpression mutants (PIRF1-OX) and phytochrome-null mutants (phyA-211 and phyB-9) showed retarded root elongation and irregular root hair formation, suggesting that PIRF1 is a negative regulator ..
  19. Usami T, Matsushita T, Oka Y, Mochizuki N, Nagatani A. Roles for the N- and C-terminal domains of phytochrome B in interactions between phytochrome B and cryptochrome signaling cascades. Plant Cell Physiol. 2007;48:424-33 pubmed
    ..In the present study, we investigated the functions of the N- and C-terminal domains of phytochrome B (phyB) in the interactions between phyB and cryptochrome signaling cascades...
  20. Galvão R, Li M, Kothadia S, Haskel J, Decker P, Van Buskirk E, et al. Photoactivated phytochromes interact with HEMERA and promote its accumulation to establish photomorphogenesis in Arabidopsis. Genes Dev. 2012;26:1851-63 pubmed publisher
    ..We recently identified a key phytochrome signaling component, HEMERA (HMR), that is essential for both phytochrome B (phyB) localization to photobodies and PIF degradation...
  21. Shen Y, Khanna R, Carle C, Quail P. Phytochrome induces rapid PIF5 phosphorylation and degradation in response to red-light activation. Plant Physiol. 2007;145:1043-51 pubmed
    ..that the photoactivated phy molecule acts within 60 s to induce this phosphorylation of PIF5, and that phyA and phyB redundantly dominate this process, with phyD playing an apparently minor role...
  22. Shen H, Zhu L, Castillon A, Majee M, Downie B, Huq E. Light-induced phosphorylation and degradation of the negative regulator PHYTOCHROME-INTERACTING FACTOR1 from Arabidopsis depend upon its direct physical interactions with photoactivated phytochromes. Plant Cell. 2008;20:1586-602 pubmed publisher
    ..phyA plays a dominant role in regulating the degradation of PIF1 following initial light exposure, while phyB and phyD and possibly other phys also influence PIF1 degradation after prolonged illumination...
  23. Khanna R, Huq E, Kikis E, Al Sady B, Lanzatella C, Quail P. A novel molecular recognition motif necessary for targeting photoactivated phytochrome signaling to specific basic helix-loop-helix transcription factors. Plant Cell. 2004;16:3033-44 pubmed
    ..designated PHYTOCHROME-INTERACTING FACTOR5 (PIF5) and PIF6, which interact specifically with the Pfr form of phyB. These two factors cluster tightly with PIF3 and two other phy-interacting bHLH proteins in a phylogenetic ..
  24. Tessadori F, van Zanten M, Pavlova P, Clifton R, Pontvianne F, Snoek L, et al. Phytochrome B and histone deacetylase 6 control light-induced chromatin compaction in Arabidopsis thaliana. PLoS Genet. 2009;5:e1000638 pubmed publisher
    ..approach, combining Quantitative Trait Locus (QTL) mapping and microscopic examination, pointed at PHYTOCHROME-B (PHYB) and HISTONE DEACETYLASE-6 (HDA6) as positive regulators of light-controlled chromatin compaction...
  25. Huq E, Quail P. PIF4, a phytochrome-interacting bHLH factor, functions as a negative regulator of phytochrome B signaling in Arabidopsis. EMBO J. 2002;21:2441-50 pubmed
    ..in srl2phyB, but not srl2phyA, double mutants, indicating that this locus functions selectively and negatively in phyB signaling...
  26. Lorrain S, Allen T, Duek P, Whitelam G, Fankhauser C. Phytochrome-mediated inhibition of shade avoidance involves degradation of growth-promoting bHLH transcription factors. Plant J. 2008;53:312-23 pubmed
    ..PIFs contain an active phytochrome binding (APB) domain that mediates their interaction with light-activated phytochrome B (phyB)...
  27. Martínez García J, Huq E, Quail P. Direct targeting of light signals to a promoter element-bound transcription factor. Science. 2000;288:859-63 pubmed
    ..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 ..
  28. Mas P, Devlin P, Panda S, Kay S. Functional interaction of phytochrome B and cryptochrome 2. Nature. 2000;408:207-11 pubmed
    ..Here we show the genetic interaction that occurs between the Arabidopsis photoreceptors phyB and cry2 in the control of flowering time, hypocotyl elongation and circadian period by the clock...
  29. Jang I, Henriques R, Seo H, Nagatani A, Chua N. Arabidopsis PHYTOCHROME INTERACTING FACTOR proteins promote phytochrome B polyubiquitination by COP1 E3 ligase in the nucleus. Plant Cell. 2010;22:2370-83 pubmed publisher
    Many plant photoresponses from germination to shade avoidance are mediated by phytochrome B (phyB)...
  30. Oka Y, Matsushita T, Mochizuki N, Quail P, Nagatani A. Mutant screen distinguishes between residues necessary for light-signal perception and signal transfer by phytochrome B. PLoS Genet. 2008;4:e1000158 pubmed publisher
    ..The N-terminal 651-amino acid domain of phyB (N651), which binds an open tetrapyrrole chromophore, acts to perceive and transduce regulatory light signals in ..
  31. Tepperman J, Hwang Y, Quail P. phyA dominates in transduction of red-light signals to rapidly responding genes at the initiation of Arabidopsis seedling de-etiolation. Plant J. 2006;48:728-42 pubmed
    ..profiling showed that one or more of the five-membered phytochrome (phy) family of Arabidopsis, other than phyB, is predominantly responsible for transducing the Rc signals to light-responsive genes...
  32. Oh E, Kim J, Park E, Kim J, Kang C, Choi G. PIL5, a phytochrome-interacting basic helix-loop-helix protein, is a key negative regulator of seed germination in Arabidopsis thaliana. Plant Cell. 2004;16:3045-58 pubmed
    ..PIL5 preferentially interacts with the Pfr forms of Phytochrome A (PhyA) and Phytochrome B (PhyB)...
  33. Leivar P, Monte E, Al Sady B, Carle C, Storer A, Alonso J, et al. The Arabidopsis phytochrome-interacting factor PIF7, together with PIF3 and PIF4, regulates responses to prolonged red light by modulating phyB levels. Plant Cell. 2008;20:337-52 pubmed publisher
    ..interacting factor (PIF), designated PIF7, interacts specifically with the far-red light-absorbing Pfr form of phyB through a conserved domain called the active phyB binding motif...
  34. Ni M, Tepperman J, Quail P. Binding of phytochrome B to its nuclear signalling partner PIF3 is reversibly induced by light. Nature. 1999;400:781-4 pubmed
    ..Here we show that full-length photoactive phytochrome B binds PIF3 in vitro only upon light-induced conversion to its active form, and that photoconversion back to ..
  35. Mira Rodado V, Sweere U, Grefen C, Kunkel T, Fejes E, Nagy F, et al. Functional cross-talk between two-component and phytochrome B signal transduction in Arabidopsis. J Exp Bot. 2007;58:2595-607 pubmed
    ..ARR4 interacts with the N-terminus of the red/far-red light photoreceptor phytochrome B (phyB) and functions as a modulator of photomorphogenesis...
  36. Boccalandro H, Rugnone M, Moreno J, Ploschuk E, Serna L, Yanovsky M, et al. Phytochrome B enhances photosynthesis at the expense of water-use efficiency in Arabidopsis. Plant Physiol. 2009;150:1083-92 pubmed publisher
    ..High red to far-red ratios increase the proportion of phytochrome B (phyB) in its active form and the phyB mutant exhibited a constitutively low stomata density...
  37. Wang F, Lian H, Kang C, Yang H. Phytochrome B is involved in mediating red light-induced stomatal opening in Arabidopsis thaliana. Mol Plant. 2010;3:246-59 pubmed publisher
    ..However, whether phytochrome B (phyB) is involved in red light regulation of stomatal opening remains largely unclear...
  38. Medzihradszky M, Bindics J, Adam E, Viczian A, Klement E, Lorrain S, et al. Phosphorylation of phytochrome B inhibits light-induced signaling via accelerated dark reversion in Arabidopsis. Plant Cell. 2013;25:535-44 pubmed publisher
    The photoreceptor phytochrome B (phyB) interconverts between the biologically active Pfr (λmax = 730 nm) and inactive Pr (λmax = 660 nm) forms in a red/far-red-dependent fashion and regulates, as molecular switch, many aspects of light-..
  39. Casson S, Franklin K, Gray J, Grierson C, Whitelam G, Hetherington A. phytochrome B and PIF4 regulate stomatal development in response to light quantity. Curr Biol. 2009;19:229-34 pubmed publisher
    ..By using a genetic approach, we demonstrate that this response is dominated by phytochrome B and also identify a role for the transcription factor, PHYTOCHROME-INTERACTING FACTOR 4 (PIF4) [7]...
  40. Shikata H, Shibata M, Ushijima T, Nakashima M, Kong S, Matsuoka K, et al. The RS domain of Arabidopsis splicing factor RRC1 is required for phytochrome B signal transduction. Plant J. 2012;70:727-38 pubmed publisher
    ..In seedling de-etiolation, phytochrome B (phyB), which is the most important member of the phytochrome family, interacts with transcription factors to ..
  41. Legris M, Klose C, Burgie E, Rojas C, Neme M, Hiltbrunner A, et al. Phytochrome B integrates light and temperature signals in Arabidopsis. Science. 2016;354:897-900 pubmed
    ..Here, we demonstrate that the phytochrome B (phyB) photoreceptor participates in temperature perception through its temperature-dependent reversion from ..
  42. Lu X, Zhou C, Xu P, Luo Q, Lian H, Yang H. Red-light-dependent interaction of phyB with SPA1 promotes COP1-SPA1 dissociation and photomorphogenic development in Arabidopsis. Mol Plant. 2015;8:467-78 pubmed publisher
    ..Both phyA and phyB, the two best characterized phytochromes, regulate plant photomorphogenesis predominantly under far-red light and ..
  43. Salome P, Michael T, Kearns E, Fett Neto A, Sharrock R, McClung C. The out of phase 1 mutant defines a role for PHYB in circadian phase control in Arabidopsis. Plant Physiol. 2002;129:1674-85 pubmed
    ..Here, we characterize one mutant, out of phase 1 (oop1), with the circadian phenotype of altered phase...
  44. Staiger D, Allenbach L, Salathia N, Fiechter V, Davis S, Millar A, et al. The Arabidopsis SRR1 gene mediates phyB signaling and is required for normal circadian clock function. Genes Dev. 2003;17:256-68 pubmed
    ..We have identified SRR1 (sensitivity to red light reduced), a gene that plays an important role in phytochrome B (phyB)-mediated light signaling...
  45. Wang W, Liu Z, Bao L, Zhang S, Zhang C, Li X, et al. The RopGEF2-ROP7/ROP2 Pathway Activated by phyB Suppresses Red Light-Induced Stomatal Opening. Plant Physiol. 2017;174:717-731 pubmed publisher
    ..Here, we showed that RopGEF2 acted as a negative regulator in phytochrome B (phyB)-mediated red light-induced stomatal opening...
  46. Su H, Abernathy S, White R, Finlayson S. Photosynthetic photon flux density and phytochrome B interact to regulate branching in Arabidopsis. Plant Cell Environ. 2011;34:1986-98 pubmed publisher
    Branching is regulated by environmental signals including phytochrome B (phyB)-mediated responses to the ratio of red to far red light...
  47. Bours R, van Zanten M, Pierik R, Bouwmeester H, van der Krol A. Antiphase light and temperature cycles affect PHYTOCHROME B-controlled ethylene sensitivity and biosynthesis, limiting leaf movement and growth of Arabidopsis. Plant Physiol. 2013;163:882-95 pubmed publisher
    ..In addition, we demonstrate that the photoreceptor PHYTOCHROME B restricts ethylene biosynthesis and constrains the -DIF-induced phase shift in rhythmic growth...
  48. Choi H, Jeong S, Kim D, Na H, Ryu J, Lee S, et al. The homeodomain-leucine zipper ATHB23, a phytochrome B-interacting protein, is important for phytochrome B-mediated red light signaling. Physiol Plant. 2014;150:308-20 pubmed publisher
    ..of phytochrome-mediated light signaling networks, we attempted to identify novel proteins interacting with phytochrome B (phyB)...
  49. Fankhauser C, Yeh K, Lagarias J, Zhang H, Elich T, Chory J. PKS1, a substrate phosphorylated by phytochrome that modulates light signaling in Arabidopsis. Science. 1999;284:1539-41 pubmed
    ..In vivo experiments suggest that PKS1 is phosphorylated in a phytochrome-dependent manner and negatively regulates phytochrome signaling. The data suggest that phytochromes signal by serine-threonine phosphorylation. ..
  50. Correll M, Coveney K, Raines S, Mullen J, Hangarter R, Kiss J. Phytochromes play a role in phototropism and gravitropism in Arabidopsis roots. Adv Space Res. 2003;31:2203-10 pubmed
    ..Phytochrome A (phyA) and phyB mediate the positive red-light-based photoresponse in roots since single mutants (and the double phyAB mutant) were ..
  51. Ni W, Xu S, Chalkley R, Pham T, Guan S, Maltby D, et al. Multisite light-induced phosphorylation of the transcription factor PIF3 is necessary for both its rapid degradation and concomitant negative feedback modulation of photoreceptor phyB levels in Arabidopsis. Plant Cell. 2013;25:2679-98 pubmed publisher
    ..In addition, we show that phyB-induced PIF3 phosphorylation is also required for the known negative feedback modulation of phyB levels in ..
  52. van Zanten M, Tessadori F, McLoughlin F, Smith R, Millenaar F, van Driel R, et al. Photoreceptors CRYTOCHROME2 and phytochrome B control chromatin compaction in Arabidopsis. Plant Physiol. 2010;154:1686-96 pubmed publisher
    ..b>Phytochrome B also controls light-induced chromatin organization, but its effect appears to be dependent on the genetic ..
  53. Liu Y, Liu Q, Yan Q, Shi L, Fang Y. Nucleolus-tethering system (NoTS) reveals that assembly of photobodies follows a self-organization model. Mol Biol Cell. 2014;25:1366-73 pubmed publisher
    ....
  54. Sánchez Lamas M, Lorenzo C, Cerdán P. Bottom-up Assembly of the Phytochrome Network. PLoS Genet. 2016;12:e1006413 pubmed publisher
    ..Surprisingly, none of the phytochromes alone conferred a photoperiodic response. Although phyE and phyB were the strongest repressors of flowering, both phyB and phyC were needed to confer a flowering response to ..
  55. Zheng X, Wu S, Zhai H, Zhou P, Song M, Su L, et al. Arabidopsis phytochrome B promotes SPA1 nuclear accumulation to repress photomorphogenesis under far-red light. Plant Cell. 2013;25:115-33 pubmed publisher
    Phytochrome A (phyA) is the primary photoreceptor mediating deetiolation under far-red (FR) light, whereas phyB predominantly regulates light responses in red light...
  56. Sheerin D, Menon C, Zur Oven Krockhaus S, Enderle B, Zhu L, Johnen P, et al. Light-activated phytochrome A and B interact with members of the SPA family to promote photomorphogenesis in Arabidopsis by reorganizing the COP1/SPA complex. Plant Cell. 2015;27:189-201 pubmed publisher
    ..Here, we show that light-activated phytochrome A (phyA) and phytochrome B (phyB) interact with SPA1 and other SPA proteins...
  57. Dieterle M, Bauer D, Buche C, Krenz M, Schafer E, Kretsch T. A new type of mutation in phytochrome A causes enhanced light sensitivity and alters the degradation and subcellular partitioning of the photoreceptor. Plant J. 2005;41:146-61 pubmed
    ..In contrast, the mutation stabilizes nuclear speckles (NUS) that appear late under continuous far-red light, whereas the formation of early, transiently appearing NUS remained more or less unaltered. ..
  58. Su L, Hou P, Song M, Zheng X, Guo L, Xiao Y, et al. Synergistic and Antagonistic Action of Phytochrome (Phy) A and PhyB during Seedling De-Etiolation in Arabidopsis thaliana. Int J Mol Sci. 2015;16:12199-212 pubmed publisher
    It has been reported that Arabidopsis phytochrome (phy) A and phyB are crucial photoreceptors that display synergistic and antagonistic action during seedling de-etiolation in multiple light signaling pathways...
  59. Sadanandom A, Adam E, Orosa B, Viczian A, Klose C, Zhang C, et al. SUMOylation of phytochrome-B negatively regulates light-induced signaling in Arabidopsis thaliana. Proc Natl Acad Sci U S A. 2015;112:11108-13 pubmed publisher
    The red/far red light absorbing photoreceptor phytochrome-B (phyB) cycles between the biologically inactive (Pr, λmax, 660 nm) and active (Pfr; λmax, 730 nm) forms and functions as a light quality and quantity controlled switch to ..
  60. Lazaro A, Mouriz A, Piñeiro M, Jarillo J. Red Light-Mediated Degradation of CONSTANS by the E3 Ubiquitin Ligase HOS1 Regulates Photoperiodic Flowering in Arabidopsis. Plant Cell. 2015;27:2437-54 pubmed publisher
    ..Our results show that phytochrome B (phyB) is able to regulate flowering time, acting in the phloem companion cells, as previously described for ..
  61. Kikis E, Oka Y, Hudson M, Nagatani A, Quail P. Residues clustered in the light-sensing knot of phytochrome B are necessary for conformer-specific binding to signaling partner PIF3. PLoS Genet. 2009;5:e1000352 pubmed publisher
    ..Interacting Factor 3 (PIF3), interacts specifically with the photoactivated, Pfr, form of Arabidopsis phytochrome B (phyB)...
  62. Luesse D, DeBlasio S, Hangarter R. Integration of Phot1, Phot2, and PhyB signalling in light-induced chloroplast movements. J Exp Bot. 2010;61:4387-97 pubmed publisher
    ..Mutations in phytochrome B (phyB) caused an enhanced avoidance response at intermediate and high light intensities...