Summary
Seedlings of Sinapis alba which were grown in light for 24, 48 and 72 h after 36 h of dark treatment renew elongation when transferred to dark again. The rate of elongation decreases with increased light treatment. The per cent as well as absolute inhibition of elongation by FUDR decreases with the duration of light treatment. The shortening of the hypocotyl is due mainly to the inhibition of cell elongation. The inhibition is not directly proportional to DNA synthesis at any particular time.
Plants without cotyledons are less inhibited than those with cotyledons. Cytosine arabinoside is inhibitory only at high concentrations. According to these results elongation inhibition by FUDR does not involve the entire DNA-synthesis.
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Barlow, P. W.: Cell growth in the absence of division in a root meristem. Planta (Berl.) 88, 215–223 (1969).
Broughton, W. I.: Relations between DNA, RNA and protein synthesis and the cellular basis of the growth response in gibberellic acid-treated pea internodes. Ann. Bot. 33, 227–243 (1969).
Bopp, M.: Hemmung des Streckungswachstums etiolierter Sproßachsen durch FUDR. Z. Pflanzenphysiol. 57, 173–187 (1967).
—: Synthèse d'ADN et croissance en longueur des cellules. Physiol. Vég. 8, 215–230 (1970).
—, Catarino, F. M.: Die Abhängigkeit der Blattentwicklung von der DNS-Synthese bei Bryophyllum daigremontianum und Bryophyllum crenatum. Rev. de Biol. 6, 273–296 (1968).
Capesius, I, Bopp, M.: Über die Synthese von DNS in den Keimpflanzen von Sinapis alba. Planta (Berl.) 94, 222–228 (1970a).
Capesius, I, Bopp, M.: DNA-Synthesehemmung durch 5-FUDR bei Sinapis alba L. Z. Naturforsch. (im Druck) (1970b).
Haber, A. H., Foard, D. E., Perdue, S. W.: Actions of gibberellic and abscisic acids on lettuce seed germination without actions of nuclear DNA synthesis. Plant Physiol. 44, 463–467 (1969).
Holm R. E., Key, I. L.: Hormonal regulation of cell elongation in the hypocotyl of rootless soybean: An evaluation of the role of DNA synthesis. Plant Physiol. 44, 1295–1362 (1969).
Kimball, A. P., Wilson, M. I.: Inhibition of DNA-polymerase by β-D-arabinosyl-cytosine and reversal of inhibition by deoxycytidine-5′-triphosphat. Proc. Soc. exp. Biol. (N.Y.) 127, 429–432 (1968).
Lang, A., Nitsan, I.: Relations among cell growth, DNA-synthesis and gibberellic action. Ann. N.Y. Acad. Sci. 14, 180–190 (1967).
Mohr, H.: Untersuchungen zur Phytochrominduzierten Photomorphogenese des Senfkeimlings (Sinapsis alba L.). Z. Pflanzenphysiol. 54, 63–83 (1966).
—, Peters, E.: Der Phototropismus und das lichtabhängige Längenwachstum des Hypocotyls von Sinapis alba L. Planta (Berl.) 55, 637–646 (1960).
Nitsan, I., Lang, A.: Inhibition of cell division and cell elongation in higher plants by inhibitors of DNA-synthesis. Develop. Biol. 12, 358–376 (1965).
Purohit, A. N., Nanda, K. K., Prabha, A.: Effect of some growth substances and antimetabolites on elongation of the first internode in epiphyllous buds of Bryophyllum tubiflorum. Havr. Bot. Gaz. 130, 102–106 (1969).
Rose, R. I., Adamson, D.: A sequential response to growth substances in coleoptiles from γ-irradiated wheat. Planta (Berl.) 88, 274–281 (1969).
Schopfer, P.: Die Hemmung des Streckungswachstums durch Phytochrom — ein stoffaufnahmefordernder Prozeß? Planta (Berl.) 85, 383–388 (1969).
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Bopp, M., Capesius, I. Streckungshemmung durch FUDR bei den Hypokotylen von Sinapis alba . Planta 96, 35–42 (1971). https://doi.org/10.1007/BF00397902
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DOI: https://doi.org/10.1007/BF00397902