Summary
The movement of applied 137Cs and of naturally-assimilated 14C down the long stolon of Saxifraga is strongly inhibited by confining a length of 10 to 30 cm of the stolon in an atmosphere of nitrogen. The inhibition is reversible, normal transport being restored after less then 4 h when the stolon is returned to air from 5 h in nitrogen. Callose formation does not seem to be involved. There is evidence that local darkness has a similar adverse effect on phloem transport.
These findings are considered antagonistic to the pressure-flow hypothesis, but favourable to the active mass-flow theories.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Canny, M. J.: Translocation: Mechanisms and kinetics. Ann. Rev. Plant Physiol. 22, 237–260 (1971).
Curtis, O. F.: Strdies on solute translocation in plants. Experiments indicating that translocation is dependent on the activity of living cells. Amer. J. Bot 26, 154–168 (1929).
Eschrich, W.: Physiologie der Siebröhrencallose. Planta (Berl.) 65, 280–300 (1965).
Fensom, D. S.: A theory of translocation in phloem of Heracleum by contractile protein microfibrillar material. Canad. J. Bot. 50, 479–497 (1972).
Geiger, D. R.: Chilling and translocation inhibition. Ohio J. Sci 69, 356–366 (1969).
Geiger, D. R., Christy, A. L.: Effect of sink region anoxia on transportation rate. Plant Physiol. 47, 172–174 (1971).
Hartt, C. E., Kortschak, H. P.: Translocation of 14C in the sugarcane plant during the day and night. Plant Physiol. 42, 89–94 (1967).
Leonard, O. A., Glenn, R. K.: Translocation of assimilates and phosphate in detached bean leaves. Plant Physiol. 43, 1380–1388 (1968).
MacRobbie, E. A. C.: Phloem translocation. Facts and mechanisms: a comparative survey. Biol. Rev. 46, 429–481 (1971).
Mason, T. G., Phillis, E.: Further studies on transport in the cotton plant. V. Oxygen supply and the activation of diffusion. Ann. Bot. 50, 455–499 (1936).
McNairn, R. B., Currier, H. B.: Translocation blockage by sieve plate callose. Planta (Berl.) 82, 369–380 (1968).
Qureshi, F. A., Spanner, D. C.: Unidirectional movement of tracers along the stolon of Saxifraga sarmentosa. Planta (Berl.) 101, 133–146 (1971).
Qureshi, F. A., Spanner, D. C.: Movement of [14C]sucrose along the stolon of Saxifraga sarmentosa. 110, 145–152 (1973).
Spanner, D. C.: The translocation of sugar in sieve tubes. J. exp. Bot. 9, 332–342 (1958).
Spanner, D. C., Jones, R. L.: The sieve-tube wall and its relation to translocation. Planta (Berl.) 92, 64–72 (1970).
Spanner, D. C., Prebble, J. N.: The movement of tracers along the petiole of Nymphoides peltatum. I. J. exp. Bot. 13, 294–306 (1962).
Ullrich, W.: Zur Sauerstoffabhängigkeit des Transportes in den Siebröhren. Planta (Berl.) 57, 402–429 (1961).
Willenbrink, J.: Über die Hemmung des Stofftransports in den Siebröhren durch lokale Inaktivierung verschiedener Atmungsenzyme. Planta (Berl.) 48, 269–342 (1957).
Wortman, J.: Quoted in Curtis, O. (1929), (1890).
Author information
Authors and Affiliations
Additional information
This work formed part of that submitted for the degree of Ph.D. of the University of London.
Rights and permissions
About this article
Cite this article
Qureshi, F.A., Spanner, D.C. The effect of nitrogen on the movement of tracers down the stolon of Saxifraga sarmentosa, with some observations on the influence of light. Planta 110, 131–144 (1973). https://doi.org/10.1007/BF00384835
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00384835