Changes in free polyamine level and di- and polyamine oxidase activity in cucumber roots under allelochemical stress conditions
Authors: Politycka, Barbara; Kubiś, Jan
Source: Acta Physiologiae Plantarum, Volume 22, Number 1, March 2000 , pp. 11-16(6)
Abstract:Seven-day-old seedlings of the cucumber (Cucumis sativus L.) cv. Wisconsin were treated with 0.5 mM solutions of phenols (p-coumaric, ferulic, p-hydroxybenzoic and vanillic acids) as stress factors. The level of free polyamines as well as activities of their catabolic enzymes, i.e. di- and polyamine oxidases (DAO - EC 1.4.34 and PAO - EC 1.4.36), were estimated for the first three hours of the stress. Cucumber roots were found to have only the presence of putrescine and spermidine. Root treatment with phenols caused a violent decrease of both amine contents during the first hour of the stress. These changes were associated with the increase of amine oxidase activity.
Document Type: Research Article
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Publication date: March 1, 2000