Transport of Substances through the Tentacles of Leaves of Drosera capensis L.
Copyright policy )Transport of Substances through the Tentacles of Leaves of Drosera capensis L.
IT was found by Darwin1 that the tentacles of Drosera secrete a viscous liquid with their glands, that they curve after stimulation and that they absorb substances from the animals caught. The processes of uptake and transport have been extensively studied in my laboratory2,4,5. The marginal tentacles of a cut leaf are put between strips of agar which contain the substance to be absorbed. The tentacles translocate it in their pedicels to the leaf. The curving of the tentacles which would move them out of the agar can be prevented by adding an osmotic substance (sugar or salt) to the agar. This reduces the turgor of the tentacles so that they cannot curve.
Plant Leaves, Biological Transport, Plants, Drosera
Plant Leaves, Biological Transport, Plants, Drosera
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