biologia plantarum

International journal on Plant Life established by Bohumil Nìmec in 1959

Biologia plantarum 7:285, 1965 | DOI: 10.1007/BF02921437

The uptake of mannitol by higher plants

V. Kozinka1, S. Klenovská1
1 Department of Plant Physiology, Institute of Botany, Slovak Academy of Sciences, Bratislava

Experiments with youngHordeum sativum andHelianthus annus plants showed that in the excretion of mannitol in the guttation liquid observed byGroenewegen andMills (1960) after uptake by the root system of plants, the osmotic concentration of mannitol in the nutrient medium and the temperature are significant. The beginning of mannitol excretion during guttation is accelerated considerably by the increase of the osmotic concentration of mannitol in the nutrient medium and the rising temperature. The osmotic concentration of mannitol is also important for the duration of mannitol excretion in the guttation liquid after transfer of the plants into a nutrient medium without mannitol. In the presence of mannitol in the nutrient medium water uptake by the root system and growth are inhibited and the tissues of the organs above ground and of the root system are dehydrated. The inhibitory effect of mannitol on the water uptake by the root system is immediate.

Received: November 30, 1964; Published: July 1, 1965  Show citation

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Kozinka, V., & Klenovská, S. (1965). The uptake of mannitol by higher plants. Biologia plantarum7(4), 285. doi: 10.1007/BF02921437
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