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Eberhard Karls Universität Tübingen Wilhelmstr. 5 72074 Tübingen, Germany http://www.uni-tuebingen.de
Contact Prof. Klaus Harter +49 7071 2972605
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Eberhard Karls Universität Tübingen

Ein Pförtner in Pflanzenzellen

Tübinger Forscher identifizieren wichtiges Regulator-Protein für die Stressreaktion von Pflanzen

(PresseBox) (Tübingen, )
Der Arbeitsgruppe von Prof. Klaus Harter am Zentrum für Molekularbiologie der Pflanzen (ZMBP) der Universität Tübingen ist es gelungen, ein wichtiges Protein bei der Stressreaktion von Pflanzenzellen zu identifizieren. Das Ergebnis erschien am gestrigen 18. Juni in PLoS ONE.

Pflanzen besitzen in den äußeren Zellschichten ihrer Blätter mikroskopisch kleine Atemöffnungen (Schließzellen) zur Steuerung des Kohlendioxid- und Sauerstoffaustauschs sowie zur Regulierung des Wasserhaushalts. Bei drohender Austrocknung und damit einsetzendem Wasserstress kann die Pflanzenzelle ihre Atemöffnungen sehr schnell schließen. Auch bei Kontakt mit Krankheitserregern wie beispielsweise Bakterien oder Pilzen versucht die Pflanze, solche Eintrittspforten schnell zu verriegeln. Wie die Schließzellen die ankommenden
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