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Contact Ms Barbara Abrell +49 89 21081416
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Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.

Hybrid-Pflanzen mit überschießendem Immunsystem

Kreuzungen können zu inkompatiblen Genkombination führen

(PresseBox) (München, )
Individuen derselben Art lassen sich meist problemlos kreuzen. Aber auch Gene haben Vorlieben, manche Genvarianten vertragen sich nicht mit denen eines anderen Individuums. Denn durch die natürliche Selektion können sich Genvarianten herausbilden, die nicht mehr zu den Genen von Pflanzen an anderen Standorten passen. Auf diese Weise können sich neue Arten herausbilden. Wissenschaftler des Max-Planck-Instituts für Pflanzenzüchtungsforschung in Köln haben jetzt eine solche Genkombination identifiziert. Sie sorgt dafür, dass die inkompatiblen Hybride bei Kälte schlecht wachsen und ihre Immunantwort gegenüber Krankheitserregern nicht mehr kontrollieren können. (Nature Genetics, 31. Oktober 2010)

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