Summary
Data are presented which indicate that the rate of synthesis and the pool size of photoconvertible protochlorophyll(ide) in the cotyledons of the mustard seedling are controlled by the active form of phytochrome (Pfr). Inductionreversion experiments show that formation of chlorophyll a through photoconversion of the protochlorophyll(ide) by repeated red pulses (5 min each) has no effect on synthesis of carotenoids and galactolipids. Since the protochlorophyll(ide)-converting activity of the standard far-red light used in this laboratory is very low, chlorophyll-a accumulation is very slow under continuous standard far-red light. It is concluded that photosynthesis (or photosynthetic phosphorylation) does not participate in the “high irradiance reaction” of photomorphogenesis.
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References
Britton, G.: General aspects of carotenoid biosynthesis. In: Aspects of terpenoid chemistry and biochemistry, p. 255–286, Goodwin, T. W., ed. London-New York: Academic Press 1971.
Greef, J. de, Butler, W. L., Roth, T. F.: Greening of etiolated bean leaves in far red light. Plant Physiol. 47, 457–464 (1971).
Häcker, M.: Der Abbau von Speicherprotein und die Bildung von Plastiden in den Kotyledonen des Senfkeimlings (Sinapis alba L.) unter dem Einfluß des Phytochroms. Planta (Berl.) 76, 309–325 (1967).
Hartmann, K. M.: A general hypothesis to interpret high energy phenomena of photomorphogenesis on the basis of phytochrome. Photochemistry and Photobiology 5, 349–366 (1966).
Lange, H., Shropshire, W., Jr., Mohr, H.: An analysis of phytochrome-mediated anthocyanin synthesis. Plant Physiol. 47, 649–655 (1971).
Mohr, H., Appuhn, U.: Die Keimung von Lactuca-Achänen unter dem Einfluß des Phytochromsystems und der Hochenergiereaktion der Photomorphogenese. Planta (Berl.) 60, 274–288 (1963).
Mohr, H.: Untersuchungen zur phytochrominduzierten Photomorphogenese des Senfkeimlings (Sinapis alba L.). Pflanzenphysiol. 54, 63–83 (1966).
Mohr, H.: Regulation der Enzymsynthese bei der höheren Pflanze. Naturwiss. Rdsch. 23, 187–195 (1970).
Oelze-Karow, H., Butler, W. L.: The development of photophosphorylation and photosynthesis in greening bean leaves. Plant Physiol. 48, 621–625 (1971).
Schnarrenberger, C., Mohr, H.: Carotenoid synthesis in mustard seedlings as controlled by phytochrome and inhibitors. Planta (Berl.) 94, 296–307 (1970).
Schneider, M. J., Stimson, W. R.: Contributions of photosynthesis and phytochrome to the formation of anthocyanin in turnip seedlings. Plant Physiol. 48, 312–315 (1971).
Schopfer, P., Mohr, H.: Phytochrome-mediated induction of phenylalanine ammonia-lyase in mustard seedlings. A contribution to eliminate some misconceptions. Plant Physiol. 49, 8–10 (1972).
Schwartzbach, S. D., Schiff, J. A.: Synthetic events during the lag period of chloroplast development in Euglena gracilis var. bacillaris. Plant Physiol. 47 (Suppl.), Nr 268 (1971).
Spruit, C. J. P., Raven, C. W.: Regeneration of protochlorophyll in dark grown seedlings following illumination with red and far red light. Acta bot. neerl. 19, 165–174 (1970).
Tremolières, A.: Les lipides des tissus photosyntheétiques. Ann. Biol. 9, 113–156 (1970).
Unser, G., Mohr, H.: Phytochrome-mediated increase of galactolipids in mustard seedlings. Naturwissenschaften 57, 358–359 (1970).
Ziegler, R., Egle, K.: Zur quantitativen Analyse der Chloroplastenpigmente: I. Kritische Überprüfung der spektral-photometrischen Chlorophyllbestimmung. Beitr. Biol. Pflanzen 41, 11–37 (1965).
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Masoner, M., Unser, G. & Mohr, H. Accumulation of protochlorophyll and chlorophyll a as controlled by photomorphogenically effective light. Planta 105, 267–272 (1972). https://doi.org/10.1007/BF00385398
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DOI: https://doi.org/10.1007/BF00385398