Abstract
The influence of cytochalasin B (CB), a potent inhibitor of cytoplasmic streaming, on 86Rb-labelled K+ translocation by detopped Lycopersicon esculentum Mill., Cucumis sativus L. and Zea mays L. plants was examined by measuring the radioactivity in xylem exudate before and after the addition of CB to the medium bathing the roots. CB caused complete cessation of cytoplasmic streaming in root segments within 15 min but was without effect on either total 86Rb uptake or exudation. Thus factors other than cytoplasmic streaming limit the movement of K+ across the symplast of the root of higher plants.
References
Anderson, W.P.: Transport through roots. In: Encyclopedia of Plant Physiology, N.S., vol. 2, Transport in plants, pt. IIB, Tissues and organs, pp. 129–156, Lüttge, U., Pitman, M.G., eds. Berlin, Heidelberg, New York: Springer 1976
Arisz, W.H.: Translocation of labelled chloride ions in the symplasm of Vallisneria leaves. Proc. K. Ned. Akad. Wet., Ser. C67, 128–137 (1964)
Bieleski, R.L.: Phosphate pools, phosphate transport, and phosphate availability. Ann. Rev. Plant Physiol. 24, 225–252 (1973)
Bostrom, T.E., Walker, N.A.: Intercellular transport of chloride in Chara. J. Exp. Bot. 27, 347–357 (1976)
Cande, W.Z., Goldsmith, M.H.M., Ray, P.M.: Polar auxin transport and auxin induced elongation in the absence of cytoplasmic streaming. Planta 111, 279–296 (1973)
de Vries, H.: Über die Bedeutung der Circulation und der Rotation des Protoplasma für den Stoffstransport in der Pflanze. Bot. Z. 43, 1–26 (1885)
Epstein, E.: Mineral Nutrition of Plants: Principles and Perspectives. New York: Wiley & Sons 1972
Pitman, M.G.: Ion transport into the xylem. Ann. Rev. Plant Physiol. 28, 71–88 (1977)
Pfeffer, W.: The Physiology of Plants, vol. 3, 2nd edn., transe by Ewart, A.J. London Oxford 1906
Sawhney, V.K., Srivastava, L.M.: Comparative effects of cytochalasin B and colchicine on lettuce seedings. Ann. Bot. 41, 271–274 (1977)
Tyree, M.T.: The symplast concept. A general theory of symplastic transport according to the thermodynamics of irreversible processes. J. Theor. Biol. 26, 181–214 (1970)
Tyree, M.T., Fisher, R.A., Dainty, J.: A quantitative investigation of symplasmic transport in Chara corallina. II. The symplasmic transport of chloride. Can. J. Bot. 52, 1325–1334 (1974)
Wooley, J.T.: Radial exchange of labelled water in intact maize roots. Plant Physiol. 40, 711–717 (1965)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Glass, A.D.M., Perley, J.E. Cytoplasmic streaming in the root cortex and its role in the delivery of potassium to the shoot. Planta 145, 399–401 (1979). https://doi.org/10.1007/BF00388369
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00388369