UV-microscopic studies on the vacuolar changes caused by the flavone 'aglycone' isovitexin inSilene pratensis plants

Autor: Jan van Brederode, J. M. Steyns
Rok vydání: 1985
Předmět:
Zdroj: Protoplasma. 128:59-63
ISSN: 1615-6102
0033-183X
DOI: 10.1007/bf01273236
Popis: UV-microscopic and chromatographic studies have been performed on the variation in contents and configuration of the flavones present in epidermal cells of the petals, stem leaves, rosette leaves and cotyledons ofSilene pratensis plants. Most of the flavone contents is located in the vacuole of the upper epidermis cells, the concentration depending on the light intensity at which the plants were grown. In plants able to glycosylate isovitexin in the petals (genotypegG/. gl/gl fg/fg, accumulating isovitexin 7-O-glucoside) the vacuole is completely filled with the UV absorbing flavone. In plants which are unable to glycosylate isovitexin in their petals (genotypeg/g gl/gl fg/fg, accumulating only isovitexin) the upper epidermal cells of stem leaves and petals contain droplet like structures in their vacuoles. At high light intensities these structures increase in mass and become detectable in the visible light. These denser structures often condense to structures with radiating threads.
Databáze: OpenAIRE
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