Abstract
Intact maize seedlings were examined for the uptake and leakage of labelled sulphate and phosphate anions affected by temperature. Control plants, grown at 25 °C were compared from the aspects of uptake capacity and leakage with plants incubated in nutrient solutions cooled to 15 °C and 5 °C, respectively. Short time intervals as well as 1–7 d exposure to cooling were used. Already after 1 h exposure at 5 °C and 5 h cooling at 15 °C and at 5 °C, considerable changes were manifested in anion uptake and leakage.
The uptake of32P declined more than that of35S. So, after a 30 min uptake interval the uptake of35S decreased at 15 °C to 49.84% and at 5 °C to 6.05% comparing with the uptake at 25 °C, while the uptake of32P declined to 28.64% at 15 °C and to 4.45% at 5 °C. The leakage of both anions was the highest at 25 °C in absolute rates, but relatively most of the uptaken35S and32P was released at 5 °C. Longer exposure to a chilling temperature of 5 °C (1–7 days) resulted in two patterns of sulphate and phosphate uptake.
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Holobradá, M., Mistrík, I. & Kolek, J. The effect of temperature on the uptake and loss of anions by seedling roots ofZea mays L. Biol Plant 23, 241–248 (1981). https://doi.org/10.1007/BF02895355
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DOI: https://doi.org/10.1007/BF02895355