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Abstract:

The plant receptor phytochrome A (phyA) mediates responses like hypocotyl growth inhibition and cotyledon unfolding that require continuous far-red (FR) light for maximum expression (high-irradiance responses, HIR), and responses like seed germination that can be induced by a single pulse of FR (very-low-fluence responses, VLFR). It is not known whether this duality results from either phyA interaction with different end-point processes or from the intrinsic properties of phyA activity. Etiolated seedlings of Arabidopsis thaliana were exposed to pulses of FR (3 min) separated by dark intervals of different duration. Hypocotyl-growth inhibition and cotyledon unfolding showed two phases. The first phase (VLFR) between 0.17 and 0.5 pulses·h-1, a plateau between 0.5 and 2 pulses·h-1 and a second phase (HIR) at higher frequencies. Reciprocity between fluence rate and duration of FR was observed within phases, not between phases. The fluence rate for half the maximum effect was 0.1 and 3 μmol·m-2-s-1 for hourly pulses of FR (VLFR) and continuous FR (HIR), respectively. Overexpression of phytochrome B caused dominant negative suppression under continuous but not under hourly FR. We conclude that phyA is intrinsically able to initiate two discrete photoresponses even when a single end-point process is considered.

Registro:

Documento: Artículo
Título:Two photobiological pathways of phytochrome A activity, only one of which shows dominant negative suppression by phytochrome B
Autor:Casal, J.J.; Yanovsky, M.J.; Luppi, J.P.
Filiación:IFEVA, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires 1417, Argentina
INGEBI, Vuelta de Obligado 2490, 1428-Buenos Aires, Argentina
Palabras clave:phytochrome; phytochrome A; phytochrome B; receptor; unclassified drug; Arabidopsis; article; controlled study; cotyledon; darkness; exposure; germination; growth inhibition; nonhuman; plant growth; seedling; Arabidopsis; Arabidopsis Proteins; Darkness; Infrared Rays; Photoreceptors; Phytochrome; Phytochrome A; Phytochrome B; Transcription Factors; Arabidopsis; Arabidopsis thaliana
Año:2000
Volumen:71
Número:4
Página de inicio:481
Página de fin:486
DOI: http://dx.doi.org/10.1562/0031-8655(2000)071<0481:TPPOPA>2.0.CO;2
Título revista:Photochemistry and Photobiology
Título revista abreviado:Photochem. Photobiol.
ISSN:00318655
CODEN:PHCBA
CAS:phytochrome, 117102-58-6; Arabidopsis Proteins; PHYA protein, Arabidopsis; PHYB protein, Arabidopsis; Phytochrome A; Phytochrome B, 136250-22-1; Phytochrome, 11121-56-5; Transcription Factors
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00318655_v71_n4_p481_Casal

Referencias:

  • Quail, P.H., Boylan, M.T., Parks, B.M., Short, T.W., Xu, Y., Wagner, D., Phytochromes: Photosensory perception and signal transduction (1995) Science, 268, pp. 675-680
  • Fankhauser, C., Chory, J., Light control of plant development (1997) Annu. Rev. Cell Dev. Biol., 13, pp. 203-229
  • Cashmore, A.R., Jarillo, J.A., Wu, Y.-J., Liu, D., Cryptochromes: Blue light receptors for plants and animals (1999) Science, 284, pp. 760-765
  • Christie, J.M., Reymond, P., Powell, G.K., Bernasconi, P., Raibekas, A.A., Liscum, E., Briggs, W.R., Arabidopsis NPHI: A flavoprotein with the properties of a photoreceptor for phototropism (1998) Science, 282, pp. 1698-1701
  • Kronenberg, G.H.M., Kendrick, R.E., The physiology of action (1986) Photomorphogenesis in Plants, 1st Ed., pp. 99-114. , Edited by R. E. Kendrick and G. H. M. Kronenberg. Marthinus Nijhoff, Amsterdam
  • Mancinelli, A.L., The physiology of phytochrome action (1994) Photomorphogenesis in Plants, 2nd Ed., pp. 211-269. , Edited by R. E. Kendrick and G. H. M. Kronenberg. Kluwer Academic, Dordrecht, The Netherlands
  • Casal, J.J., Sánchez, R.A., Vierstra, R.D., Avena phytochrome A overexpressed in transgenic tobacco seedlings differentially affects red/far-red reversible and very-low-fluence responses (cotyledon unfolding) during de-etiolation (1994) Planta, 192, pp. 306-309
  • Clough, R.C., Casal, J.J., Jordan, E.T., Christou, P., Vierstra, R.D., Expression of functional phytochrome A in transgenic rice (1995) Plant Physiol., 109, pp. 1039-1043
  • Botto, J.F., Sánchez, R.A., Whitelam, G.C., Casal, J.J., Phytochrome A mediates the promotion of seed germination by very low fluences of light and canopy shade light in Arabidopsis (1996) Plant Physiol., 110, pp. 439-444
  • Shinomura, T., Nagatani, A., Hanzawa, H., Kubota, M., Watanabe, M., Furuya, M., Action spectra for phytochrome A- and phytochrome B-specific photoinduction of seed germination in Arabidopsis thaliana (1996) Proc. Natl. Acad. Sci. USA, 93, pp. 8129-8133
  • Dehesh, K., Franci, C., Parks, B.M., Seeley, K.A., Short, T.W., Tepperman, J.M., Quail, P.H., Arabidopsis hy8 locus encodes phytochrome A (1993) Plant Cell, 5, pp. 1081-1088
  • Nagatani, A., Reed, J.W., Chory, J., Isolation and initial characterization of Arabidopsis mutants that are deficient in phytochrome A (1993) Plant Physiol., 102, pp. 269-277
  • Whitelam, G.C., Johnson, E., Peng, J., Carol, P., Anderson, M.L., Cowl, J.S., Harberd, N.P., Phytochrome A null mutants of Arabidopsis display a wild-type phenotype in white light (1993) Plant Cell, 5, pp. 757-768
  • Mazzella, M.A., Alconada Magliano, T.M., Casal, J.J., Dual effect of phytochrome A on hypocotyl growth under continuous red light (1997) Plant Cell Environ., 20, pp. 261-267
  • Yanovsky, M.J., Casal, J.J., Luppi, J.P., The VLF loci, polymorphic between ecotypes Landsberg erecta and Columbia dissect two branches of phytochrome A signalling pathways that correspond to the very-low fluence and high-irradiance responses of phytochrome (1997) Plant J., 12, pp. 659-667
  • Casal, J.J., Sánchez, R.A., Botto, J.F., Modes of action of phytochromes (1998) J. Exp. Bot., 49, pp. 127-138
  • Wagner, D., Kolosvari, M., Quail, P.H., Two small spatially distinct regions of phytochrome B are required for efficient signalling rates (1996) Plant Cell, 8, pp. 859-871
  • Short, T.W., Overexpression of Arabidopsis phytochrome B inhibits phytochrome A function in the presence of sucrose (1999) Plant Physiol., 119, pp. 1497-1505
  • Reed, J.W., Nagpal, P., Poole, D.S., Furuya, M., Chory, J., Mutations in the gene for the red/far-red light receptor phytochrome B alter cell elongation and physiological responses throughout Arabidopsis development (1993) Plant Cell, 5, pp. 147-157
  • Reed, J.W., Nagatani, A., Elich, T.D., Fagan, M., Chory, J., Phytochrome A and phytochrome B have overlapping but distinct functions in Arabidopsis development (1994) Plant Physiol., 104, pp. 1139-1149
  • Wagner, D., Tepperman, J.M., Quail, P.H., Overexpression of phytochrome B induces a short hypocotyl phenotype in transgenic Arabidopsis (1991) Plant Cell, 3, pp. 1275-1288
  • Casal, J.J., Sánchez, R.A., Benedetto, D., De Miguel, L.C., Light promotion of seed germination in Datura ferox is mediated by a highly stable pool of phytochrome (1991) Photochem. Photobiol., 53, pp. 249-254
  • Somers, D.E., Sharrock, R.A., Tepperman, J.M., Quail, P.H., The hy3 long hypocotyl mutant of Arabidopsis is deficient in phytochrome B (1991) Plant Cell, 3, pp. 1263-1274
  • Hennig, L., Büche, C., Eichenberg, K., Schäfer, E., Dynamic properties of endogenous phytochrome A in Arabidopsis seedlings (1999) Plant Physiol., 121, pp. 571-577
  • Smith, H., Xu, Y., Quail, P.H., Antagonistic but complementary actions of phytochromes A and B allow optimum seedling de-etiolation (1997) Plant Physiol., 114, pp. 637-641
  • Johnson, C.B., Tasker, R., A scheme to account quantitatively for the action of phytochrome in etiolated and lightgrown plants (1979) Plant Cell Environ., 2, pp. 259-265
  • Mancinelli, A.L., The photoregulation of anthocyanin synthesis (1983) Photomorphogenesis, Encyclopedia of Plant Physiology, 16 B, pp. 640-661. , Edited by W. Shropshire Jr. and H. Mohr. Springer, Berlin
  • Fukshansky, L., Schäfer, E., Models in photomorphogenesis (1983) Photomorphogenesis, Encyclopedia of Plant Physiology, New Series, 16 A, pp. 65-95. , Edited by W. Shopshire Jr. and H. Mohr. Springer, Berlin
  • Neuhaus, G., Bowler, C., Kern, R., Chua, N.-H., Calcium/calmodulin-dependent and independent phytochrome signal transduction pathways (1993) Cell, 73, pp. 937-952
  • Ni, M., Tepperman, J.M., Quail, P.H., PIF3, a phytochrome-interacting factor necessary for normal photoinduced signal transduction, is a novel basic helix-loop-helix protein (1998) Cell, 95, pp. 657-667
  • Choi, G., Yi, H., Lee, J., Kwon, Y.-K., Soh, M.S., Shin, B., Luka, Z., Song, P.-S., Phytochrome signalling is mediated through nucleoside diphosphate kinase 2 (1999) Nature, 401, pp. 610-613
  • Fankhauser, C., Yeh, K.C., Lagarias, J.C., Zhang, H., Elich, T.D., Chory, J., PKS1, a substrate phosphorylated by phytochrome that modulates light signaling in Arabidopsis (1999) Science, 284, pp. 1539-1541
  • Hoecker, U., Tepperman, J.M., Quail, P.H., SPA1, a WD-repeat protein specific to phytochrome A signal transduction (1999) Science, 284, pp. 496-499
  • Kiercher, S., Kozma-Bognar, L., Kim, L., Adam, E., Harter, K., Schäfer, E., Nagy, F., Light-quality dependent nuclear import of the plant photoreceptors phytochrome A and B (1999) Plant Cell, 11, pp. 1445-1456
  • Hudson, M., Ringli, C., Boylan, M.T., Quail, P.H., The FARI locus encodes a novel nuclear protein specific of phytochrome A signaling (1999) Genes Dev., 13, pp. 2017-2027
  • Cerdán, P.D., Yanovsky, M.J., Reymundo, F.C., Nagatani, A., Staneloni, R.J., Whitelam, G.C., Casal, J.J., Regulation of phytochrome B signalling by phytochrome A and FHY1 in Arabidopsis thaliana (1999) Plant J., 18, pp. 499-507

Citas:

---------- APA ----------
Casal, J.J., Yanovsky, M.J. & Luppi, J.P. (2000) . Two photobiological pathways of phytochrome A activity, only one of which shows dominant negative suppression by phytochrome B. Photochemistry and Photobiology, 71(4), 481-486.
http://dx.doi.org/10.1562/0031-8655(2000)071<0481:TPPOPA>2.0.CO;2
---------- CHICAGO ----------
Casal, J.J., Yanovsky, M.J., Luppi, J.P. "Two photobiological pathways of phytochrome A activity, only one of which shows dominant negative suppression by phytochrome B" . Photochemistry and Photobiology 71, no. 4 (2000) : 481-486.
http://dx.doi.org/10.1562/0031-8655(2000)071<0481:TPPOPA>2.0.CO;2
---------- MLA ----------
Casal, J.J., Yanovsky, M.J., Luppi, J.P. "Two photobiological pathways of phytochrome A activity, only one of which shows dominant negative suppression by phytochrome B" . Photochemistry and Photobiology, vol. 71, no. 4, 2000, pp. 481-486.
http://dx.doi.org/10.1562/0031-8655(2000)071<0481:TPPOPA>2.0.CO;2
---------- VANCOUVER ----------
Casal, J.J., Yanovsky, M.J., Luppi, J.P. Two photobiological pathways of phytochrome A activity, only one of which shows dominant negative suppression by phytochrome B. Photochem. Photobiol. 2000;71(4):481-486.
http://dx.doi.org/10.1562/0031-8655(2000)071<0481:TPPOPA>2.0.CO;2