Involvement of phenolic acids in disease resistance of potato tubers from CEPA-treated plants |
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| Authors: | M Cvikrová J Eder L S Sukhova N P Korableva |
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| Institution: | 1. Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Ke dvoru 15, 166 30, Prague 6, Czech Republic
2. Institute of Biochemistry, Russian Academy of Sciences, Leninskii Prospect 33, Moscow, Russia
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| Abstract: | Treatment of vegetative parts of potato plants two weeks before the harvest with 0.2% 2-chloroethylphosphonic acid (CEPA) delayed the sprouting of tubers and increased the resistance of tubers to infections caused byPhytophthora infestans, Erwinia carotovora andFusarium spp. during the storage period. Levels of free, soluble ester- and glycoside-bound phenolic acids and cell wall-bound phenolics were determined in cortical parenchyma of tubers (periderm). The enhancement of phenolic acids in tubers from treated plants was caused primarily by the increase in the contents of free vanillic, caffeic andp-hydroxybenzoic acids and cell wall-bound ferulic, vanillic andp-coumaric acids. |
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