Spektrum isoperioxidáz v topinamburu ve vztahu k tvorbě hlíz a k dormanci
- 1 September 1973
- journal article
- Published by Institute of Experimental Botany in Biologia plantarum
- Vol. 15 (5) , 339-345
- https://doi.org/10.1007/bf02922447
Abstract
Peroxidase activity and isoenzyme pattern were investigated in buds and tubers of Jerusalem artichokes in relation to induction and breaking of dormancy. Peroxidase activity per unit soluble protein is the highest in the dormant stage. Conditions leading to growth,i.e. release of dormancy by the cold, stimulation of axial growth by gibberellic acid or stimulation of radial growth (tuberization) by kinetin, cause rapid loss of total peroxidase activity together with a decrease of intensity of the most cathodic isoperoxidases. Induction of dormancy by AMO-1618 increases peroxidase activity mainly through the same cathodic isoenzymes. The role of the cathodic isoperoxidases is discussed in relation to auxin catabolism and the genesis of oxygenation products inhibitory to plant growth. Při indukci a přerušení dormanee byla sledována aktivita peroxidázy a spektrum isoenzymů v pupeneoh a hlízách topinamburu. Nejvyšší aktivita peroxidázy byla zjištěna ve stadiu dormanee. Podminky přispívající k růstu, např. prerušení dormance chladem, stimulaco růstu osy kyselinou giberelovou, stimulace růstu hlíz kinetinem, působily rychlý pokles aktivity peroxidázy spolu se sníŻením intensity většiny katodických isoperoxidáz. Při indukci dormanee AMO-1618 se aktivita peroxidázy a převáŻně stejných izoenzymß zvyšovala.Keywords
This publication has 16 references indexed in Scilit:
- The localization of inhibitory oxidation products of indole-3-acetic acid near abscisic acid in the inhibitor-β complex of lentil rootZeitschrift für Pflanzenphysiologie, 1972
- Hormonal interaction in controlling apical dominance in soybeansCanadian Journal of Botany, 1971
- Increase of indoleacetic acid oxidase isoenzymes by gibberellic acid in tobacco callus culturesCanadian Journal of Botany, 1971
- Cytokinin-controlled Indoleacetic Acid Oxidase Isoenzymes in Tobacco Callus CulturesPlant Physiology, 1971
- Enzymes involved in the synthesis of ethylene from methionine, or its derivatives, in tomatoesPhytochemistry, 1971
- Peroxidase Ontogeny in a Dwarf Pea Stem as Affected by Gibberellin and DecapitationJournal of Experimental Botany, 1970
- Gibberellins: Structure and MetabolismAnnual Review of Plant Physiology, 1970
- Increase in Indoleacetic Acid Oxidase Activity of Winter Wheat by Cold Treatment and Gibberellic AcidPlant Physiology, 1970
- Hormonal Regulation in Higher PlantsScience, 1969
- The Biochemistry of Lignin FormationPhysiologia Plantarum, 1955