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Symbiosis, 7 (1989) 267-271 Balaban, Philadelphia/Rehovot

Forthcoming Events 1990

March 3-9 · UCLA Symposia on Molecular and Cellular Biology Taox, New Mexico Negative Controls on Cell Growth Contact: UCLA Symposia Office 2032 Armacost Avenue Los Angeles, CA 90024 March 11-16 Joint US-Israel Workshop Marine Elat, Israel Symbiosises: Molecular Biology to Ecosystem Function Contact: Prof. Z. Dubinsky Bar Ilan University Ramat Gan, Israel Tel. 972-3-5318283 BITNET F6119@BARILAN March 19--25 Protein Purification and Biochemical Engineering Lake Tahoe, CA Contact: UCLA Symposia. Office 2032 Armacost Avenue Los Angeles, CA 90024 March 31-April 6 Receptor-Modulated Transport Systems Keystone, Colorado Contact: UCLA Symposia Office 2032 Armacost Avenue Los Angeles, CA 90024 March 31-April 7 Signal Transduction and Gene Activation in Stemboat Springs, Development Colorado Contact: UCLA Symposium Office 2032 Armacost Avenue Los Angeles, CA 90024 April 4-6 Ninth Annual Symposium: Current Topics Univ. of Missouri in Plant Biochemistry and Physiology Columbia, Missouri Contact: Doug Randall, 117 Schweitzer Hall Univ. of Missouri, Columbia, MO 65211 Spring 3rd International Colloquium on Madrid, Spain Lichen Biology Contact: Prof. C. Vicente, Universidad Complutense de Madrid, Facultad de Biologia, Catedra de Fisiologia, Vegetal, 28040, Madrid, Spain 268

April 9-12 Molecular Biology of Fungi Nottingham, UK Contact: Prof. John F. Peberdy, Dept. of Botany University of Nottingham, Nottingham NG7 2RD, UK, Tel. 0602 484 848, ext. 3650 Fax 0602 420 825 April 16-22 Molecular Strategies for Crop Improvement Keystone, Colorado Contact: UCLA Symposia Office 2032 Armacost Avenue Los Angeles, CA 90024 May 20-26 8th International Congress on Nitrogen Fixation Knoxville, Tennessee Contact: Dept. of Conferences The University of Tennessee P.O.B. 2648, Knoxville, TN 37901 Tel. 615-974-0250 June 7-10 Congress on Rapid Methods and Automation Helsinki, Finland in Microbiologyand Immunology, RAMl-90 (6th International) Contact: Nita Pietila, Congress Management Systems, P.O. Box 189 00171 Helsinki, Finland June 10-13 Tissue Culture Association ( 41st Annual Meeting) Houston, Texas Contact: The Program Committee, Tissue Culture Association 19110 Montgomery Village Ave., Suite 330 Gaithersburg, MD 20879 June 20-22 Symposium on Iron Transport, Storage and Austin, Texas Metabolism (2nd International) Contact: Dr. Charles F. Earhart Dept. of Microbiology University of Texas at Austin Austin, Texas 78712-1095,Tel. 512 471 1561 June 24-29 VII International Congress on Plant Tissue and Amsterdam Cell Culture Contact: RAJ Organisatie, Bureau Amsterdam by Europap - line 12 1078 GZ Amsterdam, The Netherlands June 24-29 Second International _Symposium on Plant- Appalachian Soil & Water Soil Interactions at low pH Conservation Research Lab Contact: Dr. R. Paul Murrmann Beckley, West Virginia Conference Chairman, USDA/ ARS Appalachian Soil & Water Conservation Research Laboratory PO Box 1061, Beckley, WV 25802-1061 FORTHCOMING EVENTS 269

July 1-7 ICSEB IV, International Congress of College Park, MD Systematic and Evolutionary Biology Contact: Dr. Arthur Popper, Dept. of Zoology, University of Maryland College Park, Maryland 207 42

July 31-Aug. 3 Symposium on the Microbiology of the Phyllosphere Madison, WI (5th International) Contact: John Andrews, Plant Pathology Department University of Wisconsin, 1630 Linden Dr. Madison, WI 53706, Tel. (608) 262-9642 July 29-August 3 Biophysics (10th International Congress) Vancouver, BC Contact: Mr. Laurier Forget, Congress Manager Canada 10th International Biophysics Congress NRCC, Ottawa, Ontario, Canada KIA OR6 Tel. 613 993 9009, Fax 613 957 9828 August 5-10 7th Congress of the Federation of European Urneea, Sweden Societies of Plant Physiology Contact: 7th Congress of FESPP, Prof. Gunnar Oquist, Dept. of Plant Physiology Univ. of Umeea, S-901 87 Urneea, Sweden Tel. 4690166963, Fax 4690166676 Telex 54005 UNIV UME August 12-18 Symposium on Genetics of Industrial Microorganisms Strasbourg, France (6th Annual) Contact: Societe Francaise de Microbiologie Cedex 15, France, Tel. (1) 45 68 81 79 August 26-31 Biodeterioration (3rd International Symposium) Windsor, Ontario, and Biodegradation (8th International Symposium) Canada Contact: Mary Hawkins, Secretariat Biodeterioration 8, 10657 Galaxie Ferndale, MI 48220-2133 Tel. 313 544 0042, Fax 313 544 3059 August 26-31 International Congress of Virology (8th) Berlin, FRG Contact: Dr. K.O. Hebermehl, Chairman, Congress Committee, DER-Congress, Congress Organisation, Augsburger Strasse 27 D-1000 Berlin 30, FRG Tel. (030) 24-6011, Fax (030) 213-6982 Aug. 28-Sept. 3 The Fourth International Mycological Congress (IMC IV) Regensburg, FRG Contact: Prof. A. Bresinsky, lnstitut fiir Botanik Universitiit Regensburg, Universitatsstrasse 31 Postfach 397, 8400 Regensburg, FRG Tel. (0941) 9431 3108, Telex 65658 unire d 270

September The Impact of Advances in Recombinant Dublin, Ireland DNA Technology on Industrial Microbiology Contact: Dr. Crawford S. Dow, Meetings Secretary, Dept. of Biological Sciences, Univ. of Warwick Coventry CV 4 7 AL, UK September 3-7 Conference on Aero biology ( 4th International). Stockholm, Sweden Contact: 4th International Aerobiological Conference Konferensservice AB, Box 403 7, S-171 04 Solna, Sweden September 11-13 Genetics and Molecular Biology Univ. of Aberdeen Physiology & Biochemistry: Regulation Scotland of Transcription in Prokaryotes Contact: Dr. Crawford S. Dow, Meetings Secretary, Dept. of Biological Sciences, Univ. of Warwick Coventry CV 4 7 AL, UK September 16-21 International Conference on Acidic Glasgow, Scotland Deposition: Its Nature and Impacts Contact: Secretariat, Acidic Deposition '90, CEP Consultants Ltd. 26-28 Albany Street Edinburgh EHl 3QH, Scotland September 16-23 European Congress on Cell Biology Milano, Italy Contact: Prof. Marina Camatini, Dept. of Biology University of Milan, via Celoria 26 20133 Milano, Italy October 1-4 4th International Conference on Environmental Barcelona, Spain Contamination Contact: Secretariat, 4th Int. Conference on Environmental Contamination, CEP Consultants Ltd., 26-28 Albany Street Edinburgh EHl 3QH, UK December 17-19 Chemotaxis/Phototaxis University of York, UK Contact: Dr. Crawford S. Dow, Meetings Secretary, Dept. of Biological Sciences, Univ. of Warwick Coventry CV 4 7 AL, UK FORTHCOMING EVENTS 271

1991

August 4-9 15th International Congress of Biochemistry Jerusalem, Israel Contact: 15th IUB Congress, P.O. Box 50006 Tel Aviv 61500, Israel Tel. 972-(3)-654571, Telex 341171 KENS IL. Fax 972 3655674, Electronic Mail I.T.T. Diualcom - 05:GLU 150 or BITNET: BNLITAUR at Weizmann

November International Symbiosis Congress Jerusalem, Israel Contact: Prof. Margalith Galun, Symbiosis Research Laboratory, Dept. of Botany Tel Aviv University, Tel Aviv 69978, Israel Tel. 03-5459163, Fax 972-3-5413752 Telex 342171 VERSY IL, BITNET EEEM@TAUNOS International Symbiosis Congress Jerusalem, November 17-22, 1991

The program will be arranged to encourage comparative discussions in different symbiotic systems and is therefore planned according to topics rather than types of symbiosis. There will be plenary lectures, parallel symposia, workshops, poster sessions and commercial exhibits. Posters will remain on display throughout the Congress. Topics

Nutritional interactions, carbon and nitrogen metabolism Transport mechanisms The host-symbiont interface Mutual regulatory and morphogenic effects and structural coadaptation Regulation of symbiont population Recognition and specificity Molecular genetics of symbiotic interactions Symbiosis and genetic exchange Trophic links, recycling and conservation Transmission of symbionts Symbiosis and development of new structures and functions Evolutionary consequences of symbiosis Ecological adaptations Ecology of the rhizosphere Behavioral symbiosis Symbiotic virus-host relationships

Workshops

Applications of modem techniques to the study of symbiosis Teaching Symbiosis

Contact: Prof. M. Galun Department of Botany The Dr. George S. Wise Faculty of Life Sciences Tel Aviv University, Ramal Aviv, Tel Aviv 69978 Tel. 972-3-5459163 Fax 972-3-5413752 Bitnet EEEM @ T AUNOS SYMBIOSIS

AN INTERNATIONAL JOURNAL

Volume 7 (1989)

EDITORIAL BOARD Margalith Galun (Tel Aviv), Editor-in-Chief

C.A. Atkins (N edlands) G.A. Peters (Yellow Springs, OH) D. Bauer (Yellow Springs, OH) E. Peveling (Munster) Y. Bertheau (Paris) K.A. Pirozynski (Ottawa) P. Bonfante-Fasolo (Turin) S.G. Pueppke (Columbia, MO) P. Brandt [Gottmgen] M. Rahat (Jerusalem) M.A. Brooks (St. Paul, MN) W. Reisser (Marburg) D. Hill (Bristol) H. Schenk (Tiibingen) M. Gusev (Moscow) W. Schwemmler (Berlin) D.H. Hubbell (Gainesville, FL) W.B. Silvester (Hamilton, NZ) J.J. Lee (New York, NY) D. Smith (Edinburgh) L. Margulis (Boston, MA) W.D.P. Stewart (Dundee) L. Muscatine (Los Angeles, CA) F.J.R. Taylor (Vancouver) K.H. Nealson (Milwaukee, WI) T.N. Taylor (Columbus, OH) W. Newcomb (Kingston, Ont) R.K. Trench (Santa Barbara, CA) R.L. Pardy (Lincoln, NE) C.P. Vance (St. Paul, MN)

Miriam Balaban, Publisher

BALABAN PUBLISHERS Ph iladelph iaRehovotZeist Vol. 7, no. 1

Review article Geological history of the Glomaceae with particular reference to mycorrhizal symbiosis by K.A. Pirozynski and Y. Dalpe (Ottawa) 1 The resynthesis of Thalli of Dermatocarpon miniatum under laboratory conditions by E. Stocker-Worgotter and R. Turk (Salzburg) ...... 37 Extracellular symbiosis of a yeast-like microorganism within Comperia merceti (Hymenoptera: Encyrtidae) by L.M. Lebeck (Riverside) ...... 51 Viability of alfalfa nodule bacteroids isolated by density gradient centrifugation by D.G. McRae, R.W. Miller and W.B. Berndt (Ottawa) 67

Mg2+ -dependent pyrophosphatase, a tonoplast enzyme in the peribacteroid membrane of Glycine max root nodules S. Bassarab and D. Werner (Marburg) 81 Forthcoming events 95 Errata 101

Vol. 7, no. 2

The significance of the fungus Asperigillus pernicilloides to the house dust mite Dermatophagoides pteronyssinus by A. Douglas and B. Hart {Oxford) . 105 Is acid tolerance of symbiotic Chlorela in vitro an indicator of pH in intracellular perialgal vacuoles of Hydra viridis by M. Rahat (Jerusalem), E. Kessler and V. Huss (Erlangen) 117 In vitro phosphorylation of soluble proteins from soybean {Glycine max) root nodules: inhibition of protein kinase activity by zn2+ by H. Krishnan and S. Pueppke {Columbia, MO) .. 127 Pine species influence suppression of Fusarium root rot by the ectomycorrhizal fungus Paxillus involutus by L. Duchesne, S. Campbell, H. Koehler and R. Peterson {Ontario) 139 Release of trehalose by symbiotic algae by R. Pardy (Lincoln), B. Spargo and J. Crowe (Davis, CA) 149 Metamorphosis of an octocoral primary polyp and its infection by algal symbiosis by Y. Benayahu (Tel Aviv), Y. Achituv and T. Berner (Ramat Gan) 159 Competition between Bradyrhizobium japonicum strains for nodulation: study of nodulation regulation in the soybean by D. Fernandez-Flouret and J.-C. Cleyet-Marel (Montpellier) 171 Forthcoming events ...... 187

Vol. 7, no. 3

Applications of computer-assisted image analysis for microscopic studies of the Rhizobium-legume symbiosis by F.B. Dazzo and M.A. Petersen (Lansing, MI) 193 Pinus resinosa Ectomycorrhizae: Seven host-fungus combinations synthesized in pure culture by D.L. Richter and J.N. Bruhn (Houghton, MI) 211 A laboratory-induced association between the marine amoeba Trichosphaerium AM-1-7and the Dinoflagellate Symbiodinium #8 by A. Rogerson, M. Polne-Fuller, R.K. Trench and A. Gibor {Santa Barbara, CA) ...... 229 In vitro enhancement of spore germination and early hyphal growth of a vesicular-arbuscular mycorrhizal fungus by host root exudates and plant flavonoids by V. Gianinazzi-Pearson, B. Branzanti and S. Gianinazzi (Dijon and Bologna) 243 Characterization of Symbiotic and Cultured Nostoc of the Lichen Nephroma laevigatum Ach. N. Kardish (Tel Aviv), M. Kessel (Jerusalem) and M. Galun (Tel Aviv) 257 Forthcoming events 267 Errata 276