Red light absorption by photosynthetic pigments screens stem tissue of Phaseolus vulgaris L. seedlings to such an extent that the most effective wavelength for the phytochrome induction control of stem growth is approximately 628 nm. Screening is greater in the first internode than in the hypocotyl. The consequences are that, compared with etiolated seedlings, much higher irradiances are required for phytochrome control in green plants, and the efficiency of 660 nm light is markedly reduced. Even very high exposures at 660 nm may not achieve appreciable photoconversion of P r to P fr.
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- P r and P fr :
red and far-red absorbing forms of phytochrome
Blaauw, O.H., Blaauw-Jansen, G.: The phototropic responses of Avena coleoptiles. Acta Bot. Neerl. 19, 755–763 (1970)
Borthwick, H.A., Hendricks, S.B., Parker, M.W.: Action spectrum for photoperiodic control of floral initiation of a long-day plant, Wintex barley (Hordeum vulgare) Bot Gaz. 110, 103–108 (1948)
Butler, W.L., Siegelman, H.W., Miller, C.O.: Denaturation of phytochrome. Biochemistry 3, 851–857 (1964)
Deutch, B., Deutch, B.: A kinetic theory of first order cyclical processes—phytochrome controlled red light induced cereal leaf unfolding compared with theory. Physiol Plant. 32, 273–281 (1974)
French, C.S., Young, V.M.K.: The absorption, action and fluorescence spectra of photosynthetic pigments in living cells and in solutions. In: Radiation Biology Vol. 3, pp. 343–391, Hollaender, C.A. ed. New York, McGraw-Hill 1956
Grill, R.: The influence of chlorophyll on in vivo difference spectra of phytochrome. Planta 108, 185–202 (1972)
Grill, R.: Influence of chlorophyll content on phytochrome measurements in turnip cotyledons. Planta 134, 11–16 (1977)
Holden, M.: Chlorophylls. In: Chemistry and biochemistry of plant pigments 2nd. Ed. 2, 1–37, Goodwin, T.W. ed., London Academic Press 1976
Holmes, M.G., Smith, H.: The function of phytochrome in plants growing in the natural environment. Nature 254, 512–514 (1975)
Jose, A.M., Vince-Prue, D., Hilton, J.R.: Chlorophyll interference with phytochrome measurement. Planta 135, 119–123 (1977)
Kasperbauer, M.J., Borthwick, H.A., Hendricks, S.B.: Inhibition of flowering of Chenopodium rubrum by prologed far-red rediation. Bot. Gaz. 124, 444–451 (1963)
Mohr, H.: Untersuchungen zur phytochrominduzierten Photomorphogenese des Senfkeimlings (Sinapis alba L). Z. Pflanzenphysiol. 54, 63–83 (1966)
Morgan, D.C., Smith, H.: Linear relationship between phytochrome photoequilibrium and growth in plants under simulated natural radiation. Nature 262, 210–212 (1976)
Nakayama, S., Borthwick, H.A., Hendricks, S.B.: Failure of photoreversible control of flowering in Pharbitis nil. Bot. Gaz. 121, 237–243 (1960)
Parker, M.W., Hendricks, S.B., Borthwick, H.A., Scully, N.J.: Action Spectrum for the photoperiodic control of floral initiation of shortday plants. Bot. Gaz. 108, 1–26 (1946)
Parker, M.W., Hendricks, S.B., Borthwick, H.A.: Action spectrum for the photoperiodic control of floral initiation of the long day plant Hyoscyamus niger. Bot. Gaz. 111, 242–252 (1950)
Piringer, A.A., Heinze, P.H.: Effect of light on the formation of a pigment in the tomato fruit cuticle. Plant Physiol. 29, 467–472 (1954)
Rabideau, G.S., French, C.S., Holt, A.S.: The absorption and reflection spectra of leaves, chloroplast suspensions, and chloroplast fractions as measured in an Ulbricht sphere. Amer. J. Bot. 33, 769–777 (1946)
Seitz, K.: Irradiance dependent far-red effects upon red induced germination of lettuce seeds. Z. Pflanzenphysiol. 71, 49–56 (1974)
Shropshire, W., Jr.: Action spectroscopy. In: Phytochrome pp. 159–181, Mitrakos, K., Shropshire, W. Jr. eds., London: Academic Press 1972
Shropshire, W., Jr., Klein, W.H., Elstad, V.B.: Action spectra of photomorphogenic induction and photoinactivation of germination in Arabidopsis thaliana. Plant Cell Physiol. 2, 63–69 (1961)
Spruit, C.J.P.: Estimation of phytochrome by spectrophotometry in vivo: instrumentation and interpretation. In: Phytochrome pp. 75–104, Mitrakos, K., Shropshire, W., Jr. eds., London: Academic Press 1972
Vince-Prue, D.: Photoperiodism in Plants. 102–103, London: McGraw-Hill 1975
Virgin, H.I.: Light-induced unfolding of the grass leaf. Physiol. Plant. 15, 380–389 (1962)
Withrow, R.B., Klein, W.H., Elstad, V.: Action spectra of photomorphogenic induction and its photoinactivation. Plant Physiol. 32, 453–462 (1957)
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Jose, A.M., Schäfer, E. Distorted phytochrome action spectra in green plants. Planta 138, 25–28 (1978). https://doi.org/10.1007/BF00392909
- Action spectrum