Discrimination of calcium against strontium in plants with a cryptating agent

The effects of cryptating agents are studied in $sup 45$CaCl$sub 2$- and $sup 90$SrCl$sub 2$-labelled seedlings of bush beans. The cryptating agent used was Kryptofix 222 (4, 7, 13, 16, 21, 24-Hexaoxa-1, 10, diazobicyclo-8, 8, 8- hexacosan). Kryptofix 222 induces a discrimination in favour of Ca aga...

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Veröffentlicht in:	Die Naturwissenschaften 1975-05, Vol.62 (5), p.238-238
Hauptverfasser:	Isermann, K, Glatzle, A. (Hohenheim Univ. (Germany, F.R.). Inst. fuer Pflanzenernaehrung)
Format:	Artikel
Sprache:	eng
Schlagworte:	560173 -Biomedical Sciences, Applied Studies-Radiation Effects-Nuclide Kinetics & Toxicology-Plants BUILDUP CALCIUM 45- UPTAKE CHELATING AGENTS CHLORIDES DECONTAMINATION EDTA N48730 -Life Sciences-Nuclide Kinetics & Toxicology- Plants PHASEOLUS- RADIONUCLIDE KINETICS STRONTIUM 90- UPTAKE TRACER TECHNIQUES
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Zusammenfassung:	The effects of cryptating agents are studied in $sup 45$CaCl$sub 2$- and $sup 90$SrCl$sub 2$-labelled seedlings of bush beans. The cryptating agent used was Kryptofix 222 (4, 7, 13, 16, 21, 24-Hexaoxa-1, 10, diazobicyclo-8, 8, 8- hexacosan). Kryptofix 222 induces a discrimination in favour of Ca against Sr chelation. The Sr$sup 2+$ concentration in the substrate is thus reduced as well as Sr$sup 2+$ uptake as compared to Ca$sup 2+$ uptake. This is the indirect reason why Kryptofix 222 is able to increase the Ca/Sr ratio in plants. (GSE/AK)
ISSN:	0028-1042 1432-1904
DOI:	10.1007/BF00603175