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Genetic engineering in the improvement of plants for phytoremediation of metal polluted soils. Environmental Pollution 107, 225-231.
| Karenlampi S., Schat, H., Vangronsveld, J., Verkleij, J. A. C., van der Lelie, D., Mergeay, M., Tervahauta, A. I. (2000).
| Metal concentrations in soils are locally quite high, and are still increasing due to many human activities, leading to elevated risk for health and the environment. Phytoremediation may offer a viable solution to this problem, and the approach is gaining increasing interest. Improvement of plants by genetic engineering, i.e. by modifying characteristics like metal uptake, transport and accumulation as well as metal tolerance, opens up new possibilities for phytoremediation. So far, only a few cases have been reported where one or more of these characteristics have been successfully altered; e.g. mercuric ion reduction causing improved resistance and phytoextraction, and metallothionein causing enhanced cadmium tolerance. These, together with other approaches and potentially promising genes for transformation of target plants are discussed.
Metal concentrations in soils can be quite high locally, leading to elevated risks for health and environment. Phytoremediation may offer a viable solution to this problem and improvement of plants by genetic engineering, i.e. modifying characteristics like metal uptake, transport and accumulation as well as metal tolerance, may open up new possibilities. Examples, where these characteristics were successfully altered (mercuric ion reduction causing improved resistance and phytoextraction and metallothionein causing enhanced cadmium tolerance) together with other approaches and potentially promising genes for transformation of target plants are discussed.
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