Summary
In an earlier paper (Mohr 1957) it was described that the formation of anthocyanin and the inhibition of lengthening of the hypocotyl of dark grown seedlings (Sinapis alba) is governed by the action of two photomorphogenic action systems. The one system is the well known “reversible red far-red reaction system” (low energy reaction), the other one is a high energy reaction system which can be called — in reference to the action peaks in the far-red and in the blue — “blue far-red reaction system”. The chemical nature of the absorbing pigments is still unknown.
In the present paper another photomorphogenic response of the young dark grown seedlings ofSinapis alba, the light dependent formation of unicellular hairs from epidermal cells of the hypocotyl, has been investigated. It has been shown that this response is also governed by these two reaction systems. These systems have been physiologically separated. Experiments have been presented which evaluate the importance of the assumption that the red absorbing pigment of the reversible red far-red pigment system is reformed from a precursor when the pigment present before irradiation is transformed into the far-red absorbing pigment by an irradiation with red.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
Literatur
Binet, P.: Lumière et germination deZygophyllum album L. C. R. Acad. Sci. (Paris)243, 397–399 (1956).
Borthwick, H. A.: Light effects on tree growth and seed germination. Ohio J. Sci.57, 357–364 (1957).
Borthwick H. A., andS. B. Hendricks: Effects of radiation on growth and development. In Handbuch der Pflanzenphysiologie, Bd. 16. Berlin-Göttingen-Heidelberg: Springer. (In Vorbereitung.)
Borthwick, H. A., S. B. Hendricks, M. W. Parker, E. H. Toole andV. K. Toole: A reversible photoreaction controlling seed germination. Proc. nat. Acad. Sci (Wash.)38, 662–666 (1952).
Borthwick, H. A., S. B. Hendricks, E. H. Toole andV. K. Toole: Action of light on lettuce — seed germination. Bot. Gaz.115, 205–225 (1954).
Cathey, H. M., andH. A. Borthwick: Photoreversibility of floral initiation inChrysanthemum. Bot. Gaz.119, 71–76 (1957).
Downs, R. J.: Photoreversibility of leaf and hypocotyl elongation of dark grown red kidney bean seedlings. Plant Physiol.30, 468–473 (1955).
—: Photoreversibility of flower initiation. Plant Physiol.31, 279–284 (1956).
Hendricks, S. B., andH. A. Borthwick: Time dependencies in photoperiodism. 8. Congr. Int. de Botanique, Sect. 11 et 12, p. 323–324, 1954.
Hendricks, S. B., H. A. Borthwick andR. J. Downs: Pigment conversion in the formative responses of plants to radiation. Proc. nat. Acad. Sci. (Wash.)42, 19–26 (1956).
Isikawa, S.: Light-sensitivity against the germination. I. “Photoperiodism” of seeds. Bot. Mag. (Tokyo)67, 51–56 (1954).
Isikawa, S., andT. Oohusa: Effects of light upon the germination of spores of ferns. II. Two light-periods ofDryopteris crassirhizoma Nakai. Bot. Mag. (Tokyo)69, 132–137 (1956).
Liverman, J. L., andJ. Bonner: The interaction of auxin and light in the growth response of plants. Proc. nat. Acad. Sci. (Wash.)39, 905–916 (1953).
Liverman, J. L., N. P. Johnson andL. Starr: Reversible photoreaction controlling expansion of etiolated bean leaf disks. Science121, 440–441 (1955).
Mohr, H.: Die Beeinflussung der Keimung von Farnsporen, durch Licht und andere Faktoren. Planta (Berl.)46, 534–551 (1956)
—: Der Einfluß monochromatischer Strahlung auf das Längenwachstum des Hypokotyls und auf die Anthocyanbildung bei Keimlingen vonSinapis alba L. (=Brassica alba Boiss.). Planta (Berl.)49, 389–405 (1957).
Mohr, H.: Photomorphogenetische Reaktionssysteme in Pflanzen, Teil 1. In: Ergebnisse der Biologie, Bd. 22. Berlin-Göttingen-Heidelberg: Springer. (Im Druck).
Mohr, H., u.A. Lünenschloss: Weitere Studien zur Photomorphogenese der Keimlinge vonSingpis alba L. Naturwiss.45, 578–579 (1958).
Mohr, H., u.G. Schoser: Eine Interferenzfilter-Monochromatoranlage für photobiologische Zwecke. Planta (Berl.)53, 1–17 (1959).
Siegelman, H. W., andS. B. Hendricks: Photocontrol of anthocyanin formation in turnip and red cabbage seedlings. Plant Physiol.32, 393–398 (1957).
—: Photocontrol of anthocyanin synthesis in apple skin. Plant Physiol.33, 185–190 (1958).
Toole, E. H., V. K. Toole, H. A. Borthwick andS. B Hendricks: Photocontrol ofLepidium seed germination. Plant Physiol.30, 15–21 (1955).
Toole, E. H., V. K. Toole, H. A. Borthwick, S. B. Hendricks andR. J. Downs. Action of light on germination of seeds ofPaulownia tomentosa Plant. Physiol.33, Suppl. XXIII (1958a).
Toole, V. K., H. A. Borthwick, E. H. Toole andA. G. Snow: The germination response of seeds ofPinus taeda to light. Plant Physiol.33, Suppl. XXIII (1958b).
Virgin, H. I.: Protochlorophyll formation and greening in etiolated barley leaves. Physiol. Plantarum (Cph.)8, 630–643 (1955).
Withrow, R. B., W. H. Klein andV. Elstad: Action spectra, of photomorphogenic induction and its photoinactivation. Plant Physiol.32, 453–462 (1957).
Author information
Authors and Affiliations
Additional information
Mit 3 Textabbildungen
Rights and permissions
About this article
Cite this article
Mohr, H. Der Lichteinfluss auf die Haarbildung am Hypokotyl vonSinapis alba L.. Planta 53, 109–124 (1959). https://doi.org/10.1007/BF01947669
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01947669