Genome and Chromatin: Organization, Evolution, Function

1. Front Matter

   Pages I-VIII

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2. Introductory Lecture

   1. Front Matter

      Pages 1-1

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   2. Search for the Molecular Basis of Diversification in Phylogenesis and Ontogenesis

      • Walter Nagl

      Pages 3-25

3. Genome Organization and Evolution

   1. Front Matter

      Pages 27-27

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   2. DNA Reassociation Studies and Considerations on the Genome Organization and Evolution of Higher Plants

      • Wolfgang Wenzel, Vera Hemleben

      Pages 29-40

   3. Genome Size and Phenotypic Evolution in Microseris (Asteraceae, Cichorieae)

      • Konrad Bachmann, Kenton L. Chambers, H. James Price

      Pages 41-66

   4. Repetitive DNA in Primitive Angiosperms

      • Maria Elisabeth Schaan, Walter Nag

      Pages 67-71

   5. Restriction Mapping of Ribosomal RNA Genes of Higher Plants

      • Harald H. Friedrich, Vera Hemleben, Joe L. Key

      Pages 73-88

4. Differential DNA Replication

   1. Front Matter

      Pages 89-89

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   2. Cytophotometric Measurements of DNA in Salivary Gland Nuclei of Drosophila melanogaster

      • Leonore Dennhöfer

      Pages 91-94

   3. Qualitative Differences in the DNA of Some Higher Plants, and Aspects of Selective DNA Replication During Differentiation

      • Elke Dührssen, Angelika Schäfer, Karl-Hermann Neumann

      Pages 95-103

   4. Differential DNA Replication Involved in Transition From Juvenile to Adult Phase in Hedera helix (Araliaceae)

      • Karl-Heinz Schäffner, Walter Nagl

      Pages 105-110

   5. Extra-DNA During Floral Induction?

      • Walter Nagl, Brigitte Frisch, Erika Frölich

      Pages 111-118

   6. Different DNA Content, Chromatin Condensation, and Transcription Activity in Retina Cell Nuclei of the Guinea-Pig

      • Bernd Schmalenberger, Walter Nagl

      Pages 119-125

5. Gene Numbers and Transcription

   1. Front Matter

      Pages 127-127

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   2. Gene Number Estimates in Plant Tissues and Cells

      • Manuel Kiper, Dorothea Bartels, Heinrich Köchel

      Pages 129-140

   3. DNA Sequence Representation in RNA of the Higher Plant Petroselinum crispum

      • Dorothea Bartels, Manuel Kiper

      Pages 141-149

   4. Transcriptional Activity in Seedlings of Matthiola incana (Brassicaceae) Determined by DNA-RNA Hybridisation

      • Ingrid Gollmer, Vera Hemleben

      Pages 151-161

   5. Synthesis and Release of RNA by Isolated Nuclei of Plant Cells in Relation to Nucleoside Triphosphates and Divalent Cations

      • Klaus Großmann, Hans-Peter Haschke, Ursula Seitz, Ulrich Seitz

      Pages 163-177

   6. Does a Compensational Mechanism Exist Among the Nucleolus Organizing Regions (NORs)?

      • Heinrich Zankl, Hanno Huwer

      Pages 179-184

At a round table discussion on the eukaryotic chromosome sponsor­ ed by the Deutsche Forschungsgemeinschaft in Diisseldorf, February 1978, the botanists among the participants felt that plant systems were under-represented. In this unsatisfactory situation, Professor V. HEMLEBEN, Tiibingen, suggested another meeting to discuss actual problems and results concerning botanical chromosome research. Professor W. NAGL was willing to organize a symposium at the University of Kaiserslautern, and Professor F. EHRENDoRFER, Wien, contacted the Rpringer-Verlag, Vienna-New York, to explore the possibility of publishing the results of this symposium in the form of a supplement volume to the journal Plant Systematics and Evol7ttion. The conference took place on 13-15 October 1978 in the Department of Biology of the University of Kaiserslautern and was attended by 40 participants from 11 universities between Hamburg and Vienna. Emphasis of this Chromosome Symposium was given to three aspects, which do not attract major interest at large international congresses: 1. Discussion and Demonstration of technical details which cannot be found in published papers (so-called tricks). 2. Orientation about actual trends and results in our understanding of the organization, evolution, and function of the plant genome at the level of the DNA (gene), the level of chromatin, and the level of the karyotype. 3. Presentation of hypotheses and models which may be stimulating for further research. Moreover, younger students should have the possibility to present their results and to discuss them with more experienced scientists.

• Nukleinsäure
• chromatin
• evolution

• Universität Kaiserslautern, Federal Republic of Germany

  Walter Nagl

• Institut für Biologie II, Universität Tübingen, Federal Republic of Germany

  Vera Hemleben

• Institut für Botanik, Universität Wien, Vienna, Austria

  Friedrich Ehrendorfer

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