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Simple phenolic glycosides as potential regulators of the IAA-oxidase system

Jednoduche fenolické glykozidy ako poteneiálne regulátory IAA-oxidázového systému

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Biologia Plantarum

Abstract

The effect of phenols and simple phenolic glycosides on the activity of IAA-oxidase isolated from gherkin seedlings was studied in experimentsin vitro. Phenol stimulated the enzyme system activity, eugenol and quinol were proven as inhibitors. Simple phenolic glycosides (arbutin, gein and phenol glucoside) influenced IAA-oxidase activity only if β-glycosidase was present: rree phenols released from their bound form increased or decreased the IAA level. The potential fegulatory effect of simple phenolic glycosides on the IAA level in plants has been discussed; this effect is thought to be mediated by free phenols and by influence on the IAA-oxidase system.

Abstract

V pokusochin vitro bol študovaný vplyv fenolov a jednoduchých fenolických glykozidov na aktivitu IAA-oxidázy, izolovanej z kotyledonov uhoriek. Fenol zvyšoval aktivitu enzýmového systému, eugenol a hydrochinón pôsobil inhibične. Jednoduché fenolické glykozidy (arbutin, gein a fenolglukozid) ovplyvňovali aktivitu IAA-oxidázového systému len v prítomnosti β-glykozidázy: vol'né fenoly uvol'nené z viazanej formy zvyšovali alebo znižovali hladinu IAA. V diskusii sa uvažuje o možnom pôsobení jednoduchých fenolických glykozidov ako potencionálnych regulátorov hladiny IAA v rastlinách mechanizmom sprostredkovaným vol'nými fenolmi a ovplyvnením systému IAA-oxidázy.

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Authors and Affiliations

  1. Department of Biochemistry and Microbiology Faculty of Pharmacy, Komenský University, Bratislava

    M. Pšenák, A. Jindra & P. Kovács

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  1. M. Pšenák
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  2. A. Jindra
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  3. P. Kovács
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Address: Kalinčiakova 8, Bratislava, Czechoslovakia.

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Pšenák, M., Jindra, A. & Kovács, P. Simple phenolic glycosides as potential regulators of the IAA-oxidase system. Biol Plant 12, 241–245 (1970). https://doi.org/10.1007/BF02920808

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  • DOI: https://doi.org/10.1007/BF02920808

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