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Parasitic wasps' newly sequenced genomes reveal new avenues for pest control
Date:1/15/2010

Researchers from the University of Geneva and the SIB Swiss Institute of Bioinformatics led an analysis of the sequenced genomes of parasitic wasps. Generally unknown to the public, the parasitic wasps kill pest insects. They are like 'smart bombs' that seek out and kill only specific kinds of insects. Harnessing their full potential would thus be vastly preferable to chemical pesticides, which broadly kill or poison many organisms in the environment, including humans. The results of this large study are featured in today's issue of Science. Professor Evgeny Zdobnov from the University of Geneva Medical School and the SIB Swiss Institute of Bioinformatics directed the comparative evolutionary genomics studies as part of this international project, which revealed many features that could be useful to pest control and medicine, and to enhance our understanding of genetics and evolution.

The scientists sequenced and analysed the genomes of three parasitoid Nasonia wasp species. "Comparing the genes and genomes of those wasps revealed almost 7'000 genes that have recognisable counterparts in humans (orthologues)", says Zdobnov. "However, the wasp is more different from its closest sequenced relative, the honeybee, than humans are from chickens". In addition to being useful for controlling pests and offering pharmaceutically interesting venoms, the wasps could act as a new genetic system with a number of unique advantages. So far, fruit flies have been the standard model for genetic studies, mainly because they are small, can be grown easily in a laboratory, and reproduce quickly. On top of sharing these traits, Nasonia present another advantage. Male Nasonia have only one set of chromosomes, instead of two sets like fruit flies and people, so that "A single set of chromosomes, which is more commonly found in lower single-celled organisms such as yeast, is a handy genetic tool, particularly for studying how genes interact with ea
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Contact: Irene Perovsek
irene.perovsek@isb-sib.ch
Swiss Institute of Bioinoformatics
Source:Eurekalert

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