Introduction of Recombinant DNA-Engineered Organisms Into the Environment Key Issues (1987) / Chapter Skim
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Classification of Risks Associated with the Introduction of R-DNA-Engineered Organisms into the Environment: What Factors Need to be Considered?
Classification of Risks Associated with the Introduction of R-DNA-Engineered Organisms into the Environment: What Factors Need to be Considered?
Pages 18-21
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From page 18... ...
Bacterial and fungal parasites What Factors Need to Be have been introduced to control harmful insects. Microorgan isms have been added to seed and soil to increase crop growth by improving nitrogen fixation.
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tions in the western United States and elsewhere to the brink of extinction. And large shifts in species composition have Source and Target Environments occurred throughout subtropical areas of North America, where Although introductions that have caused major ecological introduced fish species have largely displaced native fish spe disturbances can be cited, most (such as the chesmut blight cies.
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From page 20... ...
Scale and Frequency of Introductions The ecologically important characteristics of an organism Growing evidence indicates that the establishment of many include survival, reproductive potential, dispersal characteris species, such as those used for biocontrol, is unpredictable and tics, pathogenicity, competitiveness, and the manner in which depends on the confluence of such factors as favorable weathet; it is involved in essential processes in the ecosystem. Each favorable sites, and suitable vectors or other means of transport.
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From page 21... ...
The implication for R-ONA-engineered organisms is that large-scale or sustained applications might have consequences different from small-scale or single applications. The attractiveness of R-DNA genetic engineering methods lies in the specificity and efficiency with which they allow genetic manipulations.
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