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Earthworm detectives provide genetic clues for dealing with soil pollution
Date:6/2/2008

s of the genetic changes in terms of altered metabolism (impact to their metabolomic profile) in conjunction with large-scale physical changes in worm health.

The molecular approach to monitor ecosystem effects of toxins described in these two papers allows us to understand not only the uniqueness of earthworms, given that many of the genes they express do not yet have equivalents in 'model' organisms, but is also an important step towards the better understanding of how the earthworm has evolved adaptive mechanisms to deal with soil pollution.

This multidisciplinary research shows that a systems approach to ecotoxicology, combining technologies usually used in isolation, can be a powerful tool for understanding the response of an ecologically important organism to contaminants, and opens up the possibility of new and more effective soil monitoring and bioremediation strategies.

Dr Kille concluded "The ubiquitous nature of the earthworm makes it an accepted part of our everyday world. People don't ask themselves how worms survive in soil where the pH naturally ranges from acidic pet bogs at pH 4 to chalk downs at pH 8 or where intensively farming requires significant use of agrochemicals/pesticides or within highly contaminated ex-industrial sites. Our research illustrates how exploiting genomics and metabolomics reveals the mechanics that allow this organism to be omnipresent in our terrestrial environment."


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Contact: Charlotte Webber
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