Biology of Root Formation and Development

1. Abscisic Acid Relations in Stressed Roots

   • Wolfram Hartung, Neil C. Turner

   Pages 125-132

2. Conversion of Putrescine to γ-Aminobutyric Acid, an Essential Pathway for Root Formation by Poplar Shoots In Vitro

   • Jean-François Hausman, Danièle Evers, Claire Kevers, Thomas Gaspar

   Pages 133-139

3. Root Development in In Vitro Potato Explants as Affected by Jasmonic Acid

   • A. M. Pelacho, J. Pérez-Catalan, L. I. Martín-Closas

   Pages 141-145

4. Role of Root Derived ABA in Regulating Early Leaf Growth Responses to Water Deficits

   • Peter Neumann, Ofer Chazen, Lev Bogoslavsky, Wolfram Hartung

   Pages 147-154

5. Microcuttings Root System Morphology and Development under In Vitro and In Vivo Conditions in Citrus Rootstocks (Citrus macrophylla West and Citrange Troyer—Poncirus trifoliata (L.) X Citrus sinensis (L.) OSB.)

   • M. Castro, V. Miranda, B. Palma

   Pages 155-156

6. Root and Shoot Growth of Oat Plants Treated with CCC and Ethephon

   • Ari Rajala, Pirjo Peltonen-Sainio

   Pages 156-157

7. ODC-Mediated Biosynthesis and DAO-Mediated Catabolism of Putrescine Involved in the Induction of Rooting by Leaf Explants of Chrysanthemum morifolium Ramat In Vitro

   • Josette Martin-Tanguy, Marcel Aribaud, Monique Carré, Thomas Gaspar

   Pages 157-158

8. Polyamine Metabolism, and Root Formation in Developing Tobacco Plants

   • J. Martin-Tanguy, B. Pasquis, C. Dreumont, D. Tepfer, F. Leach

   Pages 158-159

9. 2,4-D Reversal of DFMO-Induced Inhibition of Adventitious Root Formation in Leafy Spurge Euphorbia esula L.) In Vitro

   • David G. Davis

   Pages 159-160

10. Role of Endogenous Cytokinins in Rooting of Etiolated and Light-Grown Oak Cuttings

    • Y. Eshed, J. Riov

    Pages 160-161

11. Involvement of Putrescine and of its Catabolic Pathway in the Induction of Rooting of Walnut Shoots In Vitro

    • Claire Kevers, Thomas Gaspar, Jean-Francois Hausman

    Pages 161-162

12. Auxin-Induced Gene Expression During Rooting of Loblolly Pine Stem Cuttings

    • Barry Goldfarb, Zhigang Lian, Carmen Lanz-Garcia, Ross Whetten

    Pages 163-167

13. The Use of Mutants to Understand Competence for Shoot-Borne Root Initiation

    • W. P. Hackett, S. T. Lund, A. G. Smith

    Pages 169-174

14. Transgenic Rooting in Conifers

    • Roland Grönroos, Anders Lindroth, Haile Yibrah, David Clapham

    Pages 175-180

15. Improved Rooting Ability and Root-System Performance in Transgenic Aspen Plants

    • Tzvi Tzfira, Alexander Vainstein, Arie Altman, Christian Sig Jensen

    Pages 181-186

16. Root-Directed Expression of Alien Genes in Transgenic Potato

    • Yael Mahler-Slasky, Dvora Aviv, Esra Galun, Shmuel Wolf, Shmuel Galili, Avihai Perl et al.

    Pages 187-192

17. Quantitative Genetic Analysis of Adventitious Root Forming Ability in Populus trichocarpa (Torr Et. Gray)

    • D. E. Riemenschneider, E. O. Bauer

    Pages 193-201

18. Differential Gene Expression During Maturation-Caused Decline in Adventitious Rooting Ability in Loblolly Pine (Pinus taeda L.)

    • Michael S. Greenwood, Patricia B. Singer, Antoinette Decker, Keith W. Hutchison, Carmen Diaz-Sala

    Pages 203-208

19. Direct Regeneration and Selection of Populus tremula L. Transgenic Shoots from Agrobacterium tumefaciens-Transformed Stem Explants

    • Christian Sig Jensen, Tzvi Tzfira, Alexander Vainstein, Arie Altman

    Pages 209-211

20. Study of Adventitious Root Formation Through Lateral Root-Specific mRNA and Rooting-Associated Promoters in Pinus contorta

    • Anders Lindroth, Roland Grönroos, Sara von Arnold

    Pages 213-214

This book contains the majority of the presentations of the Second International Symposium on the Biology of Root Formation and Development that was hcld in Jerusa­ lem, Israel, June 23---28, 1996. Following the First Symposium on the Biology of Adventi­ tious Root Formation, held in Dallas. USA, 1993, we perceived the need to include all kinds of roots, not only the shoot-borne ones. The endogenous signals that control root formation. and the subsequent growth and development processes, are very much alike, re­ gardless of the sites and sources of origin of the roots. Therefore, we included in the Sec­ ond Symposium contributions on both shoot-borne (i.e., adventitious) roots and root-borne (i.e., lateral) roots. Plant roots have remained an exciting and an intriguing field of sciencc. During thc years that followed the first symposium, an exceptional proliferation of interest in root biology has developed, associated with the intensive research activity in this field and the contemporary developments in the understanding of root function and development. New methods have been applied, and old ideas and interprctations werc rccxamined. Alto­ gether, it became necessary to update our viewpoints and to expand them.

• Expression
• gene expression
• physiology
• plant development
• plant roots
• root growth
• roots

• The Hebrew University of Jerusalem, Rehovot, Israel

  Arie Altman

• Tel Aviv University, Tel Aviv, Israel

  Yoav Waisel

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