Published July 1979
| Version v1
Journal article
The dual mechanism of iron absorption in bean root and leaf tissues
Creators
- 1. Stellenbosch University (South Africa). Department of Botany
Description
The possible existence of a dual pattern of Fe uptake in root and leaf tissues of been plants was investigated employing a modification of the tea-bag technique. Experimental solutions, consisting of FeCl3 in 0,5 mM CaCl2 solution, varied from 0,01-0,5 mM in the 'low' range and from 1-30 mM in the 'high' range. Absorbed Fe was determined by means of atomic absorption spectroscopy and radiometric analysis. The Fe uptake curves for both root and leaf tissues displayed a hyperbolic rise followed by a plateau in the low concentration range, and an exponential increase in the high concentration range. The possibility exists that Fe in the high concentration range is precipitated in the tissues
Abstract (Afrikaans)
Die moontlikheid dat Fe-opname in wortel- en blaarweefsel van die boontjieplant volgens 'n tweefase patroon geskied, is ondersoek deur van 'n wysiging van die teesakkie-tegniek gebruik te maak. Eksperimentele oplossings bestaande uit FeCl3 in 'n 0,5 mM CaCl2-oplossing het van 0,01-0,5 mM in die 'lae' gebied en van 1-30 mM in die 'hoe' gebied gevarieer. Opgeneemde Fe is deur middel van atoomabsorpsie-spektroskopie en radiometriese analise bepaal. Die krommes vir Fe-opname deur sowel wortel- as blaarweefsel het 'n hiperboliese styging gevolg deur 'n plato-gebied in die lae konsentrasiereeks, en 'n eksponensiele toename in die hoe konsentrasiereeks vertoon. Die moontlikheid bestaan dat Fe in die weefsel mag neerslaan in die hoe konsentrasiegebiedAdditional details
Publishing Information
- Journal Title
- J. S. Afr. Bot.
- Journal Volume
- 45
- Journal Issue
- 3
- Series
- J. S. Afr. Bot.
- Journal Page Range
- 243-248
- ISSN
- 0022-4618
INIS
- Country of Publication
- South Africa
- Country of Input or Organization
- South Africa
- INIS RN
- 11541182
- Subject category
- S60: APPLIED LIFE SCIENCES;
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; FOLIAR UPTAKE; IRON 59; PHASEOLUS; RADIOMETRIC ANALYSIS; ROOT ABSORPTION
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHEMICAL ANALYSIS; DAYS LIVING RADIOISOTOPES; EVEN-ODD NUCLEI; INTERMEDIATE MASS NUCLEI; IRON ISOTOPES; ISOTOPES; LEGUMINOSAE; NUCLEI; PLANTS; QUANTITATIVE CHEMICAL ANALYSIS; RADIOISOTOPES; SPECTROSCOPY; UPTAKE