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Cytochemical and ultrastructural aspects of aquatic carnivorous plant turions |
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| Authors: | Bartosz J Płachno Lubomír Adamec Małgorzata Kozieradzka-Kiszkurno Piotr Świątek Iwona Kamińska |
| Institution: | 1. Department of Plant Cytology and Embryology, Jagiellonian University Kraków, 9 Gronostajowa St, 30-387, Cracow, Poland 2. Institute of Botany, Section of Plant Ecology, Academy of Sciences of Czech Republic, Dukelská 135, 379 82, T?eboň, Czech Republic 3. Department of Plant Cytology and Embryology, University of Gdańsk, Wita Stwosza 59 St, 80-308, Gdańsk, Poland 4. Department of Animal Histology and Embryology, University of Silesia, Bankowa 9, 40-007, Katowice, Poland |
| Abstract: | Turions, which are modified shoot apices, are vegetative, dormant overwintering organs produced by perennial aquatic plants. In this study, the turion cytochemistry and ultrastructure of Aldrovanda vesiculosa, Utricularia vulgaris and U. stygia were compared with particular emphasis placed on storage substances. These three aquatic, rootless carnivorous plant species were studied at the end of their winter dormancy. At this stage, the turions of all species had starch as their main storage material. In contrast with A. vesiculosa, Utricularia turions were rich in protein storage vacuoles, and proteins were also accumulated as crystalline inclusions in the nuclei. All examined species accumulated lipid droplets in cells of epidermal glands. |
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