1. pH and membrane-potential changes during glucose uptake inLemna gibba G1 and their response to light

   • A. Novacky
   • C. I. Ullrich-Eberius
   • U. Lüttge

   OriginalPaper Pages: 321 - 326

2. Cell length, light and¹⁴C-labelled indol-3yl-acetic acid transport inPisum satisum L. andPhaseolus vulgaris L

   • J. Eliezer
   • D. A. Morris

   OriginalPaper Pages: 327 - 331

3. Action spectra for the light inhibition of flowering and its reversal inLemna paucicostata T-101

   • Takeshi Ohtani
   • Tadashi Kumagai

   OriginalPaper Pages: 332 - 335

4. Anti-microtubular herbicides and fungicides affect Ca²⁺ transport in plant mitochondria

   • Cornelia Hertel
   • Hartmut Quader
   • Dieter Marmé

   OriginalPaper Pages: 336 - 340

5. Acid phosphatase activity in plastids (plastolysomes) of senescing embryo-suspensor cells

   • P. -J. Gärtner
   • W. Nagl

   OriginalPaper Pages: 341 - 349

6. Binding of colchicine to a soluble fraction of carrot cells grown in suspension culture

   • Shoji Okamura

   OriginalPaper Pages: 350 - 354

7. Analysis of the regulation of adenosine 5′-phosphosulfate sulfotransferase activity inLemna minor L. using¹⁵N-density labeling

   • Christoph von Arb
   • Christian Brunold

   OriginalPaper Pages: 355 - 360

8. The endoplasmic reticulum of mung-bean cotyledons

   • Neil R. Gilkes
   • Maarten J. Chrispeels

   OriginalPaper Pages: 361 - 369

9. Spiral growth in the radially-expanding piloboloid mutants ofPhycomyces blakesleeanus

   • K. Yoshida
   • T. Ootaki
   • J. K. E. Ortega

   OriginalPaper Pages: 370 - 375

10. Nutritional regulation of organelle biogenesis inEuglena: Photo- and metabolite induction of mitochondria

    • Mark A. Horrum
    • Steven D. Schwartzbach

    OriginalPaper Pages: 376 - 383

11. Light inhibition of internode elongation in green plants

    • A. Lecharny
    • R. Jacques

    OriginalPaper Pages: 384 - 388

12. Microtubules and coated vesicles in guard-cell protoplasts ofAllium cepa L.

    • Mary E. Doohan
    • Barry A. Palevitz

    OriginalPaper Pages: 389 - 401

13. The induction of cytokinin habituation in primary pith explants of tobacco

    • Frederick Meins Jr.
    • Joseph Lutz

    OriginalPaper Pages: 402 - 407

14. A reliable method for preparation and electron microscopic visualization of nucleosomes in higher plants

    • C. Lutz
    • W. Nagl

    Short Communication Pages: 408 - 410

15. In vivo photoinactivation of ribulose bisphosphate carboxylase in the gas-vacuolate cyanobacteriumMicrocystis aeruginosa

    • Robert Stewart
    • Geoffrey A. Codd

    Short Communication Pages: 411 - 412

16. Induction of male flowers in a pistillate line ofRicinus communis L. by silver and cobalt ions

    • H. Y. Mohan Ram
    • Rina Sett

    Short Communication Pages: 413 - 415

17. Changes in chloraplast number during pea leaf development. An analysis of a protoplast population

    • Gayle K. Lamppa
    • Leslie V. Elliot
    • Arnold J. Bendich

    Erratum Pages: 416 - 416