1. Introduction

   • W. Pankow
   • T. Boller
   • A. Wiemken

   Multi-Author Review Pages: 311 - 312

2. Comparative anatomy of the host-fungus interface in mycorrhizas

   • J. Dexheimer
   • J.-C. Pargney

   Multi-Author Review Pages: 312 - 321

3. Morphological, biochemical and molecular changes during ectomycorrhiza development

   • F. M. Martin
   • J. L. Hilbert

   Multi-Author Review Pages: 321 - 331

4. Regulation of mycorrhizal infection by hormonal factors produced by hosts and fungi

   • N. Gogala

   Multi-Author Review Pages: 331 - 340

5. Assimilation of mineral nitrogen and ion balance in the two partners of ectomycorrhizal symbiosis: Data and hypothesis

   • C. Plassard
   • P. Scheromm
   • L. Salsac

   Multi-Author Review Pages: 340 - 349

6. Costs and benefits of mycorrhizas: Implications for functioning under natural conditions

   • A. H. Fitter

   Multi-Author Review Pages: 350 - 355

7. Mycorrhizas and root architecture

   • B. A. D. Hetrick

   Multi-Author Review Pages: 355 - 362

8. Acquisition of nutrients from organic resources by mycorrhizal autotrophic plants

   • J. Dighton

   Multi-Author Review Pages: 362 - 369

9. Biological interactions in the mycorrhizosphere

   • J. Garbaye

   Multi-Author Review Pages: 370 - 375

10. Mycorrhizas in ecosystems

    • D. J. Read

    Multi-Author Review Pages: 376 - 391

11. The significance of mycorrhizas for protective ecosystems

    • W. Pankow
    • T. Boller
    • A. Wiemken

    Multi-Author Review Pages: 391 - 394

12. Phytoalexin response is elicited by a pathogen (Rhizoctonia solani) but not by a mycorrhizal fungus (Glomus mosseae) in soybean roots

    • P. Wyss
    • T. Boller
    • A. Wiemken

    Research Articles Pages: 395 - 399

13. Genetic Code 1990. Outlook

    • T. H. Jukes

    Correction Pages: 399 - 399

14. Announcements

    Announcement Pages: 400 - 400