Abstract
The fluctuation of free IAA under 16 h dark period in shoots (receptor organs of photoperiodic induction) and roots of the short-day plant (SDP)Chenopodium rubrum and in shoots of the long-day plant (LDP)Chenopodium murale is very similar. The data reflect the general adjustment of auxin level to day-length rather than changes due to floral induction. However, the shift in phasing of the circadian rhythm of flowering was accompanied by a change in the position of the’ troughs’ of free IAA levels indicating a possible relationship between the two processes. Periods of higher sensitivity to application of IAA (3. 10-4M) inhibitory to flowering have been observed both during the endogenous rhythm of flowering in the SDPC. rubrum and during induction by days of continuous illumination in the LDPC. murale. There exist common traits in the response of LDP and of SDPChenopodium to auxin treatment. Aminoethoxyvinylglycine (AVG), an inhibitor of ethylene biosynthesis, counteracted some flowering inhibitory effects of IAA when applied simultaneously with it. This suggests that auxin effects in modifying flowering might in fact be due to ethylene.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Aksenova, N. P., Bavrina, T. V., Konstantinova, T. N., Chaïlakhyan, M. Kh.: [Callus model of flowering and the perspectives of its investigation.] In Russ. - Zh. obshch. Biol.33: 523–538, 1972.
Andreae, S. R.: The effect of abscisic acid on the rhythmic flowering response ofChenopodium rubrum. - In: Abstracts XII International Botanical Congress. Vol. II. P. 277. Nauka, Leningrad 1975.
Cooke, A. R.: Changes in free auxin content during the photoinduction of short-day plants. - Plant Physiol.29: 440–444, 1954.
Dostál, R., Hošek, M.: Über den Einfluss von Heteroauxin auf die Morphogenese beiCircaea (das Sachssche Phänomen). - Flora131: 263–286, 1937.
Khatoon, S., Seidlová, F., Krekule, J.: Time-dependence of auxin and ethrel effects on flowering inChenopodium rubrum L. - Biol. Plant.15 : 361–363, 1973.
King, R. W.: Multiple circadian rhythms regulate photoperiodic flowering response inChenopodium rubrum. - Can. J. Bot.53: 2631–2638, 1975.
King, R. W., Cumming, G.: Rhythms as photoperiodic timers in the control of flowering inChenopodium rubrum L. - Planta103 : 281–301, 1972.
Krekule, J., Přívratsky, J.: The shoot apex as the site of an inhibitory effect of applied auxin on photoperiodic induction of flowering in the short-day plantChenopodium rubrum L. - Z. Pflanzenphysiol.71: 345–348, 1974.
Lang, A.: Auxins in flowering. - In:Ruhland, W. H. (ed.): Handbuch der Pflanzenphysiologie, Vol. XIV. Pp. 909 - 958. Springer Verlag, Berlin - Heidelberg - Göttingen 1961.
Lozhnikova, V. N., Krekule, J., Seidlová, F., Bavrina, T. V., Chaïlakhyan, M. Kh.: [Balance between gibberellins and abscisins in tobacco in the course of photoperiodic induction of flowering.] In Russ. - Fiziol. Rast.29: 247–252, 1982.
Machácková, I., Krekule, J., Součková, D. Přikryl, Z., Ullmann, J.: Reversion of IAA-induced inhibition of flowering in long-day and short-dayChenopodium species by aminoethoxyvinyl glycine. - J. Plant Growth Regul. (in press).
Mousdale, D. M. A., Butcher, D. N., Powell, R. G.: Spectrophotofluorimetric methods of determining indole-3-aeetic acid. - In:Hillman, J. R., (ed.): Isolation of Plant Growth Substances. Pp. 27–39. London: Cambridge University Press, Cambridge 1978.
Nakayama, S.: Studies on the dark process in the photoperiodic response ofPharbitis seedlings. - Sci. Rep. Tohoku Univ.24: 137–183, 1958.
Pavlová, L., Krekulk, J.: Fluctuation of free IAA under inductive and non-inductive photoperioda inChenopodium rubrum. - Plant Growth Regulation2: 91–98, 1984.
Přívratský, J., Tykva, R., Krekule, J.: The possible role of auxin in reversing photoperiodic induction of flowering in a short-day plantChenopodium rubrum L. - Z. Pflanzenphysiol.78: 377–386, 1976.
Salisbury, F. B.: The dual role of auxin in flowering. - Plant Physiol.30: 327–334, 1955.
Seidlová, F., Khatoon, S.: Effects of indol-3yl-acetie acid on floral induction and apical differentiation inChenopodium rubrum. - Ann. Bot.40: 37–42, 1976.
Skripchinskiï, V. V.: Fotoperiodizm - Ego Proiskhozhdenie i Evolyutsiya. [Photoperiodism and Its Origin in Evolution.] - Nauka. Leningrad 1975.
Teltscherová, L., Pavlová, L., Pleskotová, D.: Changes in the content of endogenous auxins in apical buds ofChenopodium rubrum L. induced with respect to the endogenous rhythm in capacity to flower. - Biol. Plant.19: 205–211, 1977.
Ullmann, J., Seidlová, F., Krekule, J., Pavlová, L.:Chenopodium rubrum as a model plant for testing the flowering effects of PGRs. - Biol. Plant.27: 367–372, 1985.
Vanden Driessche, T.: Circadian rhythmicity: general properties - as exemplified mainly byAcetabularia - and hypothesis on its cellular mechanism. - Arch. Biol. (Bruxelles)91: 49–76, 1980.
Yang, F. S., Hoffman, N. E.: Ethylene biosynthesis and its regulation in higher plants. - Annu. Rev. Plant Physiol,35: 155–189, 1984.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Krekule, J., Pavlová, L., Součkova, D. et al. Auxin in flowering of short-pay and long-dayChenopodium species. Biol Plant 27, 310–317 (1985). https://doi.org/10.1007/BF02879868
Issue Date:
DOI: https://doi.org/10.1007/BF02879868