Reactive oxygen species and sugars may be the messengers in kinetin-induced death of field bean root cortex cells.
| Autor: | Doniak, M. |
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| Další autoři: | |
| Jazyk: | angličtina |
| Předmět: |
články
journal articles aerenchym kataláza fluorescenční mikroskopie superoxid dismutáza transmisní elektronová mikroskopie cukry peroxid vodíku fazolové pole reaktivní formy kyslíku bob obecný aerenchyma catalase fluorescence microscopy superoxide dismutase transmission electron microscopy sugars kinetin-induced death root cortex cells hydrogen peroxide field bean reactive oxygen species Vicia faba |
| Druh dokumentu: | Non-fiction |
| ISSN: | 0006-3134 |
| Abstrakt: | Abstract: Kinetin-induced programmed cell death of field bean (Vicia faba spp. minor) root cortex cells led to aerenchyma formation. The process was accompanied by appearance of a greater amount of reactive oxygen species (ROS), greater superoxide dismutase (SOD) and catalase (CAT) activities, as well as by thickening cell walls and changes in sugar amounts, particularly in cell wall-bound sugars. The obtained results justify the supposition that ROS scavengers together with an increased amount of sugars (soluble, storage, and cell wall-bound) and thick cell walls protected the cells against death. Thus, kinetin played a dual role because it induced programmed death of chosen cells and simultaneously stimulated protective mechanisms against death in other cells. These results confirm an earlier suggestion that cell death induced by kinetin is a specific process during which its progression is hallmarked by metabolic and morphological features. |
| Databáze: | Katalog Knihovny AV ČR |
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