Abstract
The amyloplasts found in the apical hook cells of etiolated pea (Pisum sativum L.) epicotyls were randomly distributed. Sedimentation of endodermal amyloplasts in the direction of gravity became apparent in the transition from the hook to the top of the main axis of the epicotyl. Cortical amyloplasts in this region were not, however, sedimented. These patterns of sedimentation could not be related to changes in amyloplast size, and it is proposed that cytoplasmic properties determine amyloplast behaviour.
The differentiation of plastids in the hook differed between the amyloplast-containing endodermal cells and the cortical cells, in which amoeboid plastids predominated over amyloplasts. Amyloplasts disappeared from the cortical cells in the main axis of the epicotyl, but in the endodermal cells sedimented amyloplasts were found throughout the upper epicotyl.
Etiolated epicotyls induced to grow horizontally by treatment with ethylene had a normal content of amyloplasts, sedimented in the direction of gravity.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Abeles, F.B. (1973) Ethylene in plant biology. Academic Press, New York
Clifford, P.E., Barclay, G.F. (1980) The sedimentation of amyloplasts in living statocytes of the dandelion flower stalk. Plant Cell Environ 3, 381–386
Darwin, C. (1880) The power of movement in plants. John Murray, London
Goeschl, J.D., Pratt, H.K. (1968) Regulatory roles of ethylene in the etiolated growth habit of Pisum sativum. In: Biochemistry and physiology of plant growth substances. pp. 1229–1242, Wightman, F., Setterfield, G., eds., Runge Press, Ottawa
Halstead, T.W., Scott, T.K., eds. (1984) Plant gravitational and space research. American Society of Plant Physiologists, Rockville Md., USA
Heathcote, D.G. (1981) The geotropic reaction and statolith movements following geostimulation of mung bean hypocotyls. Plant Cell Environ. 4, 131–140
Hillman, S.K., Wilkins, M.b. (1982) Gravity perception in decapped roots of Zea mays. Planta 155, 267–271
Jacobs, M., Short, T.W. (1986) Further characterization of the presumptive auxin transport carrier using monoclonal antibodies. In: Plant growth substances 1985, pp. 218–226, Bopp, M., ed., Springer, Berlin
Jensen, W.H. (1969) Botanical histochemistry. W.H. Freeman, San Francisco
MacDonald, I.R., Gordon, D.C., Hart, J.W., Maher, E.P. (1983) The positive hook: the role of gravity in formation and opening of the apical hook. Planta 158, 76–81
O'Brien, T.P., McCully, M.E. (1981) The study of plant structure Blackwell, Oxford
Reynolds, E.S. (1963) The use of lead citrate at high pH as an electron opaque stain in electron microscopy. J. Cell. Biol. 17, 208–212
Roberts, I.N., Lloyd, C.W., Roberts, K. (1985) Ethylene-induced microtubule reorientations: mediation by helical arrays. Planta 164, 439–447
Sack, F.D., Leopold, A.C. (1985) Cytoplasmic streaming affects gravity-induced amyloplast sedimentation in maize coleoptiles. Planta 164, 56–62
Taylor, J.E., Grosskopf, D.G., McGaw, B.A., Horgan, R., Scott, I.M. (1988) Apical localization of 1-aminocyclopropane-1-carboxylic acid and its conversion to ethylene in etiolated pea seedlings. Planta 174, 112–114
Thimann, K.V. (1972) The natural plant hormones. In: Plant physiology: a treatise vol. VIB pp. 3–332. Steward, F.C., ed., Academic Press, New York
Thomson, W.W., Whatley, J.M. (1980) Development of nongreen plastids. Annu. Rev. Plant Physiol. 31, 375–394
Volkmann, D., Sievers, A. (1979) Graviperception in multicellular organs. In: Encyclopedia of plant physiology, N.S., vol. 7: Physiology of movements, pp. 573–600, Haupt, W., Feinleib, M.E., eds., Springer, Heidelberg
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Grosskopf, D.G., Scott, I.M. Amyloplast development in etiolated and ethylene-treated pea epicotyls. Planta 175, 425–431 (1988). https://doi.org/10.1007/BF00396350
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00396350