Electrophoretic analyses of extracts of cucumber leaves infected with Colletotrichum lagenarium, Fusarium oxysporum f.sp. cucumerinum, Pseudomonas lachrymans, Erwinia tracheiphila, tobacco necrosis virus or cucumber mosaic virus revealed the presence of a protein band with an Rf value of 0.55-0.60 (based on mobility or bromophenol blue) on 10% polyacrylamide gel. This band was not evident in extracts of healthy or mechanically wounded leaves. The protein was not detected in uninfected leaves of infected plants, but it was detected in similar amounts in infected leaves and in secondarily challenged leaves of infected plants even though symptoms were not apparent on the latter. The protein had a molecular weight of approximately 16'000 d, was adsorbed on DEAE-cellulose, did not react with Schiff's reagent, and did not have ribonuclease activity. When injected into cucumber leaves, it did not inhibit germination of conidia of C. lagenarium or induce resistance against disease caused by the fungus.
Diese Website wird in älteren Versionen von Netscape ohne graphische Elemente dargestellt. Die Funktionalität der Website ist aber trotzdem gewährleistet. Wenn Sie diese Website regelmässig benutzen, empfehlen wir Ihnen, auf Ihrem Computer einen aktuellen Browser zu installieren. Weitere Informationen finden Sie auf
The content in this site is accessible to any browser or Internet device, however, some graphics will display correctly only in the newer versions of Netscape. To get the most out of our site we suggest you upgrade to a newer browser.