| Transgenic Trees in the World | |
| Field Trials with Transgenic Trees - State of the Art and Developments | p. 3 |
| Introduction | p. 3 |
| Transgenic Trees in Test Tube and Field Trials | p. 3 |
| Transgenic Trees for Improvement of Forestry | p. 6 |
| Northern America | p. 6 |
| Europe | p. 10 |
| Latin America | p. 13 |
| South Africa | p. 14 |
| Australasia | p. 15 |
| New Zealand | p. 15 |
| Japan | p. 16 |
| Vietnam | p. 16 |
| China | p. 17 |
| Fruit Trees | p. 18 |
| North America | p. 18 |
| Europe | p. 18 |
| The Papaya Story | p. 20 |
| New Applications of Transgenic Trees | p. 20 |
| Conclusions | p. 21 |
| References | p. 22 |
| Transgenic Forest Trees in China | p. 25 |
| Introduction | p. 25 |
| Production of Insect Resistant Transgenic Forest Trees in China | p. 26 |
| Transgenic Trees Tolerant to Environmental Stresses | p. 30 |
| Sterile Transgenic Forest Trees | p. 31 |
| Further Transformation Work on Forest Trees | p. 32 |
| Field Tests of Transgenic Trees | p. 33 |
| Commercial Use of Transgenic Forest Trees | p. 38 |
| Rules and Regulations | p. 41 |
| Conclusions | p. 41 |
| References | p. 42 |
| Modification of Perennial Fruit Trees | p. 47 |
| Introduction | p. 47 |
| General Overview of Transformed Fruit Trees | p. 48 |
| Target Genes Introduced into Fruit Trees | p. 53 |
| Abiotic-stress Tolerance | p. 54 |
| Shortening of the Juvenile Phase | p. 54 |
| Disease Resistance | p. 54 |
| Insect Resistance | p. 54 |
| Rootstock Improvement | p. 55 |
| Fruit Improvement | p. 55 |
| Progress in Genetic Transformation of Fruit Trees | p. 55 |
| Apple | p. 55 |
| Apricot | p. 56 |
| Cherry | p. 56 |
| Chestnut | p. 57 |
| Citrus | p. 57 |
| Grapevine | p. 58 |
| Kiwifruit | p. 58 |
| Papaya | p. 58 |
| Peach | p. 59 |
| Pear | p. 59 |
| Persimmon | p. 60 |
| Plum | p. 60 |
| Walnut | p. 60 |
| Others | p. 60 |
| Conclusions | p. 61 |
| References | p. 62 |
| Genetic Transformation of Some Tropical Trees, Shrubs, and Tree-like Plants | p. 67 |
| Introduction | p. 67 |
| Genetic Transformation Studies | p. 68 |
| Banana, Musa sp. | p. 68 |
| Cocoa, Theobroma cacao L. | p. 76 |
| Coffee, Coffea sp. | p. 78 |
| Eucalyptus, Eucalyptus sp. | p. 81 |
| Oil Palm, Elaeis guineensis Jacq. | p. 84 |
| Rubber Tree, Hevea brasiliensis Muell. Arg. | p. 87 |
| Conclusions | p. 90 |
| References | p. 92 |
| Wood and other Traits | |
| Environmental Aspects of Lignin Modified Trees | p. 105 |
| Introduction | p. 105 |
| Lignin and Current Knowledge of Lignin Biosynthesis | p. 106 |
| Lignin Modification in Genetically Engineered Trees | p. 108 |
| Environmental Aspects of Processing Lignin Modified Trees in the Pulp and Paper Industry | p. 109 |
| Ecological Interactions of Lignin Modified Trees | p. 111 |
| Insect Herbivores | p. 111 |
| Mycorrhizas | p. 114 |
| Conclusions | p. 115 |
| References | p. 117 |
| Modification of Cellulose in Wood | p. 123 |
| Introduction | p. 123 |
| Modification of Lignin (and Cellulose) Content via "Lignin-enzymes" | p. 124 |
| Modification of Cellulose Content via "Cellulose Genes" | p. 126 |
| Cell Wall Formation and Cellulose Synthesis | p. 126 |
| Cellulose Degradation | p. 128 |
| Modification of Cellulose Fibre via "Hormone Genes" | p. 128 |
| Conclusions | p. 132 |
| References | p. 133 |
| Heavy Metal Resistance and Phytoremediation with Transgenic Trees | p. 137 |
| Introduction | p. 137 |
| The Problem: Soil Contamination | p. 140 |
| Some Specialists Can Deal with High Levels of Heavy Metals: Hyperaccumulators | p. 141 |
| Dealing with High Concentration of Heavy Metals - Homeostasis, Tolerance, Detoxification | p. 142 |
| The Impact of Glutathione in Stress Resistance | p. 143 |
| Molecular Engineering to Improve the Performance of Plants in Phytoremediation | p. 147 |
| The Use of Trees for Phytoremediation | p. 149 |
| Conclusions | p. 151 |
| References | p. 152 |
| Transgenic Approaches to Engineer Nitrogen Metabolism | p. 157 |
| Introduction | p. 157 |
| Nitrogen Uptake, Assimilation and Related Pathways | p. 157 |
| Nitrogen Uptake | p. 157 |
| Nitrogen Assimilation | p. 159 |
| Carbon Flux for Amino Acid Biosynthesis | p. 161 |
| Relevance of N Metabolism in Trees | p. 162 |
| Genetic Manipulation of Nitrogen Metabolism | p. 163 |
| Studies in Model and Crop Plants | p. 163 |
| Production of Transgenic Trees and Consequences of Gene Manipulation | p. 165 |
| Enhanced Photosynthetic Metabolism and Vegetative Growth | p. 165 |
| Increased N Use Efficiency | p. 168 |
| Increased Resistance to Stress | p. 169 |
| Increased Nitrogen Reserves | p. 169 |
| The Importance of C/N Balance | p. 170 |
| Conclusions | p. 172 |
| References | p. 174 |
| Biotic and Abiotic Resistances | |
| Virus Resistance Breeding in Fruit Trees | p. 181 |
| Introduction | p. 181 |
| Importance of Viral Diseases | p. 181 |
| Citrus Tristeza Virus (CTV) (Closteroviridae) | p. 182 |
| Grapevine Viruses | p. 183 |
| Prunus Viruses | p. 183 |
| Papaya Ringspot Virus (PRSV) (Potyviridae) | p. 183 |
| Cacao Swollen Shoot Virus (CSSV) (Caulimoviridae, genus Badnavirus) | p. 184 |
| Conventional Breeding Efforts for Virus Resistance in Trees | p. 184 |
| Classical Cross Protection | p. 186 |
| Pathogen Derived Resistance (PDR) | p. 187 |
| Transformation, Selection and Regeneration Approaches | p. 188 |
| Description of Construct Design | p. 189 |
| Survey of Virus Resistance in Transgenic Fruit Trees | p. 191 |
| Conclusions | p. 193 |
| References | p. 193 |
| The Use of Genetic Transformation Procedures to Study the Defence and Disease Resistance Traits of Trees | p. 201 |
| Introduction | p. 201 |
| Ecological Background | p. 201 |
| The Constitutive and Induced Defenses of Plants | p. 203 |
| Constitutive Defenses | p. 203 |
| Induced Direct Defenses | p. 205 |
| Induced Indirect Defenses | p. 206 |
| Wound Perception and Signaling | p. 208 |
| The Elm Leaf Beetle System | p. 212 |
| Bark Beetles and the Resin Defenses of Conifers | p. 213 |
| Other Pest Syndromes of Conifers | p. 215 |
| Genes and Pathways of Interest | p. 217 |
| The Biochemistry and Genetics of Plant Volatile Emission | p. 217 |
| The Biosynthesis of Terpenoids in Plants | p. 218 |
| Further Approaches for Identifying Other Genes of Interest | p. 221 |
| Advances in Understanding Tree Diseases from Introduced Novel Defensive Traits | p. 223 |
| Studies with Exotic Diseases | p. 224 |
| Conclusions | p. 225 |
| References | p. 227 |
| Fungal and Bacterial Resistance in Transgenic Trees | p. 235 |
| Introduction | p. 235 |
| Review of Current Approaches | p. 236 |
| Chitinases | p. 236 |
| Antimicrobial Peptides | p. 237 |
| Short Amphipathic Cationic Peptides | p. 237 |
| Cystein-rich Peptides | p. 239 |
| Attacins | p. 240 |
| Oxalate Oxidase | p. 240 |
| RNA Interference (RNAi or Post-transcriptional Gene Silencing [PTGS]) | p. 241 |
| Plantibodies | p. 242 |
| Other Resistance-enhancing Transgenes | p. 243 |
| Next Steps | p. 244 |
| Conclusions | p. 247 |
| References | p. 247 |
| Genetically Modified Trees Expressing Genes for Insect Pest Resistance | p. 253 |
| Introduction | p. 253 |
| The Insecticidal [delta]-Endotoxins from Bacillus thuringiensis and their Role in the Control of Insect Pests | p. 256 |
| Transfer of Bt Genes into Forest Tree Species | p. 257 |
| Transgenic Fruit Trees Expressing Bt Genes | p. 259 |
| Plant Proteinase Inhibitors: A Useful Tool for Plant Defence Against Insect Predation | p. 259 |
| Transfer of PI Genes into Forest and Fruit Trees | p. 260 |
| Other Strategies to Obtain Insect Resistance in Forest and Fruit Trees | p. 262 |
| Environmental Risk and Deployment Strategies for Genetically Engineered Insect-resistant Trees | p. 263 |
| Field Trials with Insect-resistant GM Trees | p. 263 |
| Toxicity and Allergenicity of Proteins Encoded by Genes for Insect Pest Resistance | p. 264 |
| Development of Target Pests Resistant to GM Trees | p. 265 |
| Emergence of New Pests Following GM Trees Deployment | p. 266 |
| Deleterious Effects on the Ecosystems | p. 266 |
| Horizontal Transfer of the Transgenes to Other Organisms | p. 267 |
| Conclusions | p. 268 |
| References | p. 268 |
| Towards Genetic Engineering for Drought Tolerance in Trees | p. 275 |
| Introduction | p. 275 |
| Water as a Central Molecule in Plant Physiology | p. 275 |
| Water as a Limiting Resource | p. 276 |
| Signalling Cascades and Metabolic Stress Adaptation from the Cellular to the Organismic Perspective | p. 277 |
| ABA, MAPKK, Lipases, and Transcription Factors are Involved in Transmission of the Stress Signal | p. 277 |
| Drought Stress Requires Osmotic Adjustment | p. 282 |
| The Cells' Weapons to Prevent Drought-induced Injury | p. 284 |
| Profiling of Gene Expression and Protein Patterns: New Tools for Improving Drought Tolerance in Trees? | p. 286 |
| Conclusions | p. 289 |
| References | p. 291 |
| Biosafety Issues | |
| Genome Instability in Woody Plants Derived from Genetic Engineering | p. 301 |
| Introduction | p. 301 |
| Genetic Engineering of Woody Plants | p. 301 |
| Genome Instability in Plants | p. 302 |
| Genome Instability Caused by Viruses and Repetitive Elements in Plants | p. 302 |
| Polyploidy | p. 304 |
| Genome Instability in Transgenic Plants | p. 305 |
| Somaclonal Variation | p. 305 |
| Molecular Marker Analysis of Genome Instability in Transgenic Plants | p. 306 |
| Transgene Silencing | p. 306 |
| Structure of T-DNA Insertion Locus | p. 307 |
| Recombination Between Transgenic Sequences, Viruses and Repetitive Elements | p. 308 |
| Transgene Stability in Woody Plants | p. 309 |
| Instability of Transgene Expression | p. 310 |
| Populus spp. | p. 310 |
| Citrange (Citrus sinensis L. Osbeck x Poncirus trifoliata L. Raf.) | p. 311 |
| Spruce (Picea mariana, P. glauca, P. abies) | p. 311 |
| Pinus radiata | p. 312 |
| Apple (Malus spp.) | p. 312 |
| Recombination Between Transgenic and Virus DNA/RNA | p. 312 |
| Grapevine (Vitis spp. L) | p. 312 |
| Prunus spp. | p. 313 |
| Conclusions | p. 314 |
| References | p. 314 |
| Investigation of Horizontal Gene Transfer from Transgenic Aspen to Ectomycorrhizal Fungi | p. 323 |
| Introduction | p. 323 |
| Horizontal Gene Transfer Between Plants and Microorganisms | p. 324 |
| Ectomycorrhizal Fungi and Horizontal Gene Transfer | p. 325 |
| What Makes Ectomycorrhizal Fungi Interesting with Respect to Horizontal Gene Transfer? | p. 325 |
| Investigation of Horizontal Gene Transfer from Trees to Ectomycorrhizal Fungi under Laboratory Conditions | p. 325 |
| Investigation of Horizontal Gene Transfer from Aspen to Ectomycorrhizal Fungi under Field Conditions | p. 327 |
| Experimental Site and Planting Conditions of Aspen | p. 327 |
| Sampling and Analysis of Ectomycorrhizal Biodiversity | p. 328 |
| Investigation of Horizontal Gene Transfer | p. 329 |
| Conclusions | p. 331 |
| References | p. 332 |
| Transgenic Temperate Fruit Tree Rootstocks | p. 335 |
| Introduction | p. 335 |
| Overview of Genetic Transformation in Rootstocks | p. 336 |
| Malus Rootstocks | p. 336 |
| Pyrus and Prunus Rootstocks | p. 342 |
| Factors Affecting the Transformation Efficiency | p. 342 |
| Methodology of Rootstock Transformation and Results Obtained | p. 344 |
| Field Tests of Transgenic Rootstocks | p. 346 |
| Conclusions | p. 346 |
| References | p. 347 |
| Index | p. 351 |
| Table of Contents provided by Ingram. All Rights Reserved. |