APPLICATIONS OF PLANT CELL AND TISSUE CULTURE The Ciba Foundation is an international scientific and educational charity. It was established in 1947 by the Swiss chemical and pharmaceutical company of ClBA Lirnited-now CIBA-GEIGY Limited. The Foundation operates independently in London under English trust law. The Ciba Foundation exists to promote international cooperation in biological, medical and chemical research. It organizes about eight international multidisciplinary symposia each year on topics that seem ready for discussion by a small group of research workers. The papers and discussions are published in the Ciba Foundation symposium series. The Foundation also holds many shorter meetings (not published), organized by the Foundation itself or by outside scientific organizations. The staff always welcome suggestions for future meetings. The Foundation’s house at 41 Portland Place, London, W1 N 4BN, provides facilities for meetings of all kinds. Its Media Resource Service supplies information to journalists on all scientific and technological topics. The library, open seven days a week to any graduate in science or medicine, also provides information on scientific meetings throughout the world and answers general enquiries on biomedical and chemical subjects. Scientists from any part of the world may stay in the house during working visits to London. 137 Ciba Foundation Symposium APPLICATIONS OF PLANT CELL AND TISSUE CULTURE - A Wiley lnterscience Publication 1988 JOHN WILEY & SONS Chichester . New York . Brisbane . Toronto . Singapore 0C iba Foundation 1988 Published in 1988 by John Wiley & Sons Ltd, Baffins Lane, Chichester, Sussex PO19 IUD, UK. Suggested series entry for library catalogues: Ciba Foundation Symposia Ciba Foundation Symposium 137 + x 269 pages, 33 figures, 16 tables Library of Congress Cataloging-in-Publication Data Applications of plant cell and tissue culture. p. cm. - (Ciba Foundation symposium ; 137) “A Wiley-interscience publication.” Includes indexes. ISBN 0 471 91886 5 1. Plant propagation - In vitro - Congresses. 2. Plant biotechnology - Congresses. 3. Plant cell culture - Congresses. 4. Plant tissue culture - Congresses. I. Series. SB123.6.A67 1988 631.5‘23-dc 19 88- 10687 CIP British Library Cataloguing in Publication Data Applications of plant and cell tissue culture. - (Ciba Foundation symposium ; 137). 1. Plants. Cells & tissues. Cultures I. Series 581 ’.0724 ISBN 0 471 91886 5 Typeset by Inforum Ltd, Portsmouth Printed and bound in Great Britain by the Bath Press Ltd., Bath, Avon Contents Symposium on Applications of Plant Cell and Tissue Culture, held at the Kyoto International Conference Centre, Kyoto, Japan, 2&22 October 1987 Editors: Gregory Bock (Organizer) and Joan Marsh Introduction 1 R.S. Chaleff Herbicide-resistant plants from cultured cells 3 Discussion 11 W.R. Scowcroft and P.J. Larkin Somoclonal variation 21 Discussion 26 D. J. Durzan Applications of cell and tissue culture in tree improvement 36 Discussion 49 H. Harada, M. Kyo and J. Imamura The induction of embryogenesis in Nicotiana immature pollen in culture 59 Discussion 69 E.C. Cocking Producing fertile somatic hybrids 75 Discussion 83 A. Komamine and K. Nomura Application of microinjection to a high frequency and synchronous somatic embryogenesis system in carrot suspension cultures 90 Discussion 92 E. Galun, A. Per1 and D. Aviv Protoplast fusion-mediated transfer of male sterility and other plasmone-controlled traits 97 Discussion 107 A. Hirai, S. Akada and S. Sugiura Analysis of chloroplast genomes in parasexual hybrid calli 113 Discussion 118 V vi Contents T.C. Hall and R.T. DeRose Transformation of plant cells 123 Discussion 138 I. Potrykus Direct gene transfer to plants 144 Discussion 15 1 L.A. Withers Germplasm preservation 163 Discussion 172 W. Barz, S. Daniel, W. Hinderer, U. Jaques, H. Kessmann, J. Koster, C. Otto and K. Tiemann Elicitation and metabolism of phytoalexins in plant cell cultures 178 Discussion 191 Y. Yamada and T. Hashimoto Biosynthesis of tropane alkaloids 199 Discussion 208 M.H. Zenk, M. Ruffer, T.M. Kutchan and E. Galneder Biotechnological approaches to the production of isoquinoline alkaloids 213 Discussion 224 Y. Fujita Industrial production of shikonin and berberine 228 Discussion 234 M.W. Fowler Problems in commercial exploitation of plant cell cultures 239 Discussion 250 General discussion 254 Index of contributors 259 Subject index 261 Participants Professor Dr W. Barz Lehrstuhl fur Biochemie der Pflanzen, Westfalische Wilhelms-Universitat, Hindenburgplatz 55, D-4400 Munster, Federal Republic of Germany Dr R.S. Chaleff American Cyanamid Co, PO Box 400, Princeton, New Jersey 08540, USA Professor E.C. Cocking Plant Genetic Manipulation Group, Department of Botany, School of Biological Sciences, University of Nottingham, University Park, Nottingham NG72RD, UK Professor J. Durzan Department of Environmental Horticulture, College of Agriculture & Environmental Sciences, Agricultural Experimental Station, Davis, California 95616, USA Professor M.W. Fowler Wolfson Institute of Biotechnology, University of Sheffield, Sheffield S10 2TN, UK Dr Y. Fujita Bioscience Research Laboratories, Mitsui Petrochemical Industries Ltd, 6-1-2 Waki-cho, Kuga-Gun, Yamaguchi-Ken 740, Japan Professor Esra Galun Department of Plant Genetics, The Weizmann Institute of Science, PO Box26, Rehovot 76100, Israel Professor T.C. Hall Department of Biology, Texas A & M University, College Station, Texas 77843-3258, USA Professor H. Harada Institute of Biological Sciences, University of Tsukuba, Sakura-Mura, Nihari-Gun, Ibaraki-Ken 305, Japan Dr C.T. Harms Biotechnology Research, CIBA-GEIGY Corporation, PO Box 12257, Research Triangle Park, North Carolina 27709-2257, USA Dr A. Hirai Graduate Division of Biochemical Regulation, Faculty of Agriculture, Nagoya University, Furo-cho, Chikusa, Nagoya 464, Japan vii viii Participants Professor A. Komamine Department of Plant Physiology, Biological Institute, Tohoku University, Aoba-Yama, Sendai 980, Japan Mrs M.V. Mhatre (Ciba Foundation Bursar) Plant Biotechnology Section, Bio-organic Division, Bhabha Atomic Research Centre, Trombay, Bombay 400085, India Dr K. Ohyama Research Center for Cell &Tissue Culture, Faculty of Agriculture, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606, Japan Professor Dr I. Potrykus Institut fur Pflanzenwissenschaften, Eidgenossische Technische Hochschule Zentrum LFV-E20, CH-8092 Zurich, Switzerland Dr M. J.C. Rhodes Plant Cell Biotechnology Group, AFRC Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA, UK Sir Ralph Riley 16 Gog Magog Way, Stapleford, Cambridge CB2 5BQ, UK Dr W.R. Scowcroft Vice President, Research and Development, Biotechnica Canada Inc, 170 6815-8 Street NE, Calgary, Alberta, Canada T2E 7H7 Professor M. Sugiura Center for Gene Research, Nagoya University, Furocho, Chikusa-ku, Nagoya 464, Japan Professor M. Tabata Department of Pharmacognosy , Faculty of Pharmaceutical Sciences, Kyoto University, Yoshida, Shimoadachi-cho, Sakyo-ku, Kyoto 606, Japan Professor I. Takebe Department of Biology, Faculty of Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464, Japan Dr H. Uchimiya Institute of Biological Sciences, University of Tsukuba, Sakura-Mara, Ibaraki-Ken 305, Japan Professor M. van Montagu Laboratorium Genetika, Rijksuniversiteit Gent, Ledeganckstraat 35, B-9000 Gent, Belgium Dr L.A. Withers* Department of Agriculture & Horticulture, University of Nottingham, School of Agriculture, Sutton Bonington, Loughborough LE12 5RD, UK * Present address: IBPGR Headquarters, Food and Agriculture Organization of the United Nations, Via delle Terme di Caracalla, 00100 Rome, Italy Participants ix Professor Y. Yamada (Chairman) Research Center for Cell & Tissue Culture, Faculty of Agriculture, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606, Japan Professor M.H. Zenk Lehrstuhl Pharmazeutische Biologie, Universitat Munchen, Karlstrasse 29, D-8000 Munchen 2, Federal Republic of Germany Novartis Foundation Symposium Edited by Gregory Bock, Joan Mash Copyright 0 1988 by Ciba Foundation Introduction People have used plants as sources of materials other than nutrients for almost as long as they have been eating the plants themselves. The use of plant-derived medicines, poisons and narcotics is still common in many cultures, and herbal medicines in particular are becoming increasingly popular in the Western world. Against this, there is the continuing desire within our scientifically oriented society to improve on the achievements of Nature. In agriculture, this was most obvious in the development of synthetic herbicides and pesticides, and the extensive application of artificial fertilizers to produce ever greater yields. These farming methods were complemented by breeding programmes, initiated when the first plant species were chosen for deliberate cultivation, and now designed to select plants with increased yield potential. The ability of ‘weeds and pests’ to develop resistance to man-made products, particularly when they were applied in large amounts and were extremely stable so that they persisted in the environment, and concern over their safety when incorporated into human and animal food chains, made these procedures less desirable, on both social and economic grounds. The emphasis in science turned to finding natural means of resistance and transferring these to commer- cially important crops. Similarly, the ability of certain plants, the legumes, in association with rhizobacteria, to fix their own nitrogen, thereby circumventing the need for the major exogenous fertilizer, encouraged the hope that this trait could be introduced into other crop species. The time scale of conventional plant breeding programmes is slow and genetic engineering of plant cells seemed to be the ideal way of introducing specific desirable characteristics into the relevant plant. However, this approach encountered two major problems. Isolation of the desired gene was hindered by the fact that the biochemical or genetic basis of the phenotype was unknown, so that the time required for screening procedures was determined by the generation time of the plant. In addition, manipulation of plant genotypes by the techniques of molecular biology proved to be much more difficult than similar work on animal cells. This was partially due to the presence of the outer plant cell wall, a barrier which scientists had to overcome when trying to introduce genetic material into a plant cell. The fact that some traits were encoded by the organellar genomes made genetic analysis more complicated. Plant cell biology has now reached a stage when most, if not all, of these problems can be resolved. Much of this progress is due to the development of both cell and tissue culture technologies. Regeneration of whole plants from single cells has been possible since the 1930s but for a long time it was restricted 1