Cyanamide mode of action during inhibition of onion (Allium cepa L.) root growth involves disturbances in cell division and cytoskeleton formation
| Autor: | Dorota Soltys, Wojciech Kurek, Anna Rudzińska-Langwald, Renata Bogatek, Agnieszka Gniazdowska, Elwira Sliwinska |
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| Rok vydání: | 2011 |
| Předmět: |
Cell division
Vicia Meristem Mitosis Plant Science Biology Microtubules Plant Roots Pheromones chemistry.chemical_compound Onions Botany Genetics Cytoskeleton Cell Proliferation Cell growth Cell Cycle fungi food and beverages biology.organism_classification Vicia villosa Horticulture chemistry Cyanamide Root growth Allium Original Article Onion Allelopathy |
| Zdroj: | Planta |
| ISSN: | 1432-2048 0032-0935 |
| Popis: | Cyanamide is an allelochemical produced by hairy vetch (Vicia villosa Roth.). Its phyotoxic effect on plant growth was examined on roots of onion (Allium cepa L.) bulbs. Water solution of cyanamide (2-10 mM) restricted growth of onion roots in a dose-dependent manner. Treatment of onion roots with cyanamide resulted in a decrease in root growth rate accompanied by a decrease in accumulation of fresh and dry weight. The inhibitory effect of cyanamide was reversed by its removal from the environment, but full recovery was observed only for tissue treated with this chemical at low concentration (2-6 mM). Cytological observations of root tip cells suggest that disturbances in cell division may explain the strong cyanamide allelopathic activity. Moreover, in cyanamide-treated onion the following changes were detected: reduction of mitotic cells, inhibition of proliferation of meristematic cells and cell cycle, and modifications of cytoskeleton arrangement. |
| Databáze: | OpenAIRE |
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