The effects of two synthetic putrescine analogues on germination and appressorium formation by uredospores of Uromyces viciae-fabae on artificial membranes |
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Authors: | M Reitz DR Walters B Moerschbacher DJ Robins |
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Institution: | Institut für Biologie III, RWTH Aachen, Germany;Department of Plant Science, The Scottish Agricultural College, Auchincruive, Ayr;Department of Chemistry, University of Glasgow, Glasgow, UK |
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Abstract: | M. REITZ, D.R. WALTERS, B. MOERSCHBACHER AND D.J. ROBINS. 1995. An examination was made of the effects of two synthetic putrescine analogues, ( E )-1,4-diaminobut-2-ene (E-BED) and ( E )-( N, N, N, N -tetraethyl)-1,4-diaminobut-2-ene (E-TED), on germination and appressorium formation by uredospores of the rust fungus Uromyces viciaefabae on artificial membranes. E-BED reduced germination by just 11% at 0.1 mmol 1-1and by 24% at 1 mmol 1-1, while appressorium formation was reduced by 37% at 0.05 mmol 1-1and was completely prevented at 1 mmol 1-1E-BED. The E-BED derivative E-TED reduced uredospore germination by 45% at 0.05 mmol 1-1, while no appressoria were formed when uredospores were exposed to 0.05 mmol 1-1E-TED. These results support previous suggestions that E-BED and E-TED exert their main effect on fungal development on the leaf surface. |
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