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Plant and Cell Physiology, 1965, Vol. 6, No. 4 581-586
© 1965

Article

EFFECT OF VARIOUS ANIONS ON THE TRANSPORT OF STRONTIUM WITHIN PLANTS

TAKASHI SAKAGUCHI

Laboratory of Chemistry, Faculty of Liberal Arts and Education, Miyazaki University Miyazaki

With a view to finding a means of reducing contamination of foods by radiostrontium, the inhibiting effects of various anions on the transport of strontium in plants are investigated.

Pea and bean plants were pretreated with silicate, phosphate and nitrate ions, and the distribution of strontium in various parts of the plants was examined.

  1. In the case of pretreatment with silicate or phosphate ions, strontium absorption by the plant was decreased even if these anions were absent in the culture solution at the time of application of 89Sr.
  2. The absorption of strontium by the plants pretreated with nitrate ions was similar to that of the controls.
  3. Strontium absorbed by the plants pretreated with silicate or phosphate was found to be accumulated in the roots and its quantity transported to the aboveground parts was remarkably small; especially in the case of application of silicate, no measurable amount of strontium was transported to the upper parts of the plant.
  4. In the control and nitrate-pretreated plants, strontium absorbed in the roots was readily transported to the aboveground parts.

(Received March 15, 1965; )
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