1. Editorial

   • B. E. S. Gunning

   EditorialNotes Pages: I - I

2. Isolation of protoplasts for patch-clamp experiments: an improved method requiring minimal amounts of adult leaf or root tissue from monocotyledonous or dicotyledonous plants

   • M. Blom-Zandstra
   • H. T. M. Koot
   • S. A. Vogelzang

   OriginalPaper Pages: 1 - 6

3. Ultrastructure of microsporogenesis and microgametogenesis inArabidopsis thaliana (L.) Heynh. ecotype Wassilewskija (Brassicaceae)

   • Heather A. Owen
   • C. A. Makaroff

   OriginalPaper Pages: 7 - 21

4. Ultrastructural characterization of asexual cysts ofGonyaulax polyedra Stein (Dinoflagellata)

   • G. Behrmann
   • R. Hardeland

   OriginalPaper Pages: 22 - 27

5. Early cellular events during induction of carrot explants with 2,4-D

   • Flavia Guzzo
   • Barbara Baldan
   • Paola Mariani

   OriginalPaper Pages: 28 - 36

6. Immature erythroid cells with novel morphology and cytoskeletal organization in adultXenopus

   • L. H. Twersky
   • A. D. Bartley
   • W. D. Cohen

   OriginalPaper Pages: 37 - 49

7. Localization of the yellow pigment formed in roots of gramineous plants colonized by arbuscular fungi

   • A. Klingner
   • B. Hundeshagen
   • H. Bothe

   OriginalPaper Pages: 50 - 57

8. The inhibition of infection thread development in the cultivar-specific interaction ofRhizobium and subterranean clover is not caused by a hypersensitive response

   • Margreet H. de Boer
   • M. A. Djordjevic

   OriginalPaper Pages: 58 - 71

9. Time course and auxin sensitivity of cortical microtubule reorientation in maize roots

   • E. B. Blancaflor
   • K. H. Hasenstein

   OriginalPaper Pages: 72 - 82

10. Plasma membrane phospholipid and sterol synthesis in soybean hypocotyl segments undergoing auxin-induced elongation

    • Marta Goodrich-Tanrikulu
    • R. L. Travis

    OriginalPaper Pages: 83 - 92

11. Ultrastructural studies on the embryo sac ofViscum minimum I. Megasporogenesis

    • M. Zaki
    • J. Kuijt

    OriginalPaper Pages: 93 - 105

12. Cellular changes during heat shock induction and embryo development of cultured microspores ofBrassica napus cv. Topas

    • Cheryl A. Telmer
    • W. Newcomb
    • Daina H. Simmonds

    OriginalPaper Pages: 106 - 112