Virus-Resistant Transgenic Plants: Potential Ecological Impact

Hardcover  123 pages  ISBN 3540632573      £65.00

The introduction of novel genes into plants by genetic transformation holds great promise for plant breeding, and many crop species have been rendered virus-resistant by expression of viral sequences. However, it is essential to also evaluate the potential risks associated with this new technology. Among the types of genetically modified plants that could represent potential ecological risks, ones expressing viral sequences pose questions of particular interest. In this volume special attention is given to recombination in plants expressing sequences of RNA or DNA viruses. It also covers heterologous encapsidation and other forms of complementation in plants expressing coat protein genes, potential deleterious effects of satellite RNAs associated with cucumber mosaic virus, and possibilities of sexual transmission of virus resistance genes to related species that are or could become troublesome weeds. These topics are presented under the following headings:

• Evolution; the past, a window on the future?
• Systematic search for recombination events in plant viruses and viroids
• Different mechanisms of homologous and non-homologous recombination in brome mosaic virus
• Studies on RNA recombination in vivo and in vitro
• RNA recombination in viral protein mediated virus resistant transgenic plants
• Transgenic plants expressing viral sequences create a favourable environment for recombination between viral sequences
• Behaviour of cucumovirus pseudorecombinant and recombinant strains in solanaceous hosts
• Recombination between cauliflower mosaic virus and transgenic plants that contain CaMV transgenes: influence of selection pressure on isolation of recombinants
• Synergy of virus accumulation and pathogenicity in transgenic plants expressing viral sequences
• Risk assessment of transgenic plants expressing the coat protein gene of plum pox potyvirus
• Mixed infections and genetic exchange occur in natural populations of cucumber mosaic cucumovirus
• The potential of a beneficial satellite RNA of cucumber mosaic virus to acquire deleterious functions: nature versus greenhouses
• Ecological impact of transgenic virus-resistance in crop, weed, and wild plant populations (due to potential alterations of plant invasiveness)
• Risk assessment of gene flow associated with virus resistant transgenic crop plants
• Concluding remarks and recommendations

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Springer : agriculture & forestry : biotechnology : crop protection : ecology : environmental impact : environmental science : genetically modified organisms : plant genetics : plant pathology : plant science : protein engineering : risk assessment : virology