caa a22 4500 477111912 CHVBK 20180405111611.0 cr unu---uuuuu 170330e19960501xx s 000 0 eng 10.1007/BF00010997 doi (NATIONALLICENCE)springer-10.1007/BF00010997 Effect of primary leaves on 59Fe uptake by roots and 59Fe distribution in the shoot of iron sufficient and iron deficient bean ( Phaseolus vulgaris L.) plants [Elektronische Daten] [Chengdong Zhang, Volker Römheld, Horst Marschner] A study has been made on the effect of primary leaves on iron (Fe) distribution in the shoot. Bean (Phaseolus vulgaris L.) seedlings were precultured in nutrient solution with 8×10-5 M FeEDTA for 4 days, and then grown further with either 8×10-5 M FeEDTA (+Fe) or without Fe supply (-Fe) for another 5 days. Thereafter, both +Fe and -Fe plants were treated in three different ways: undisturbed; one primary leaf removed; or one primary leaf shaded, starting two hours before supply 59FeEDTA to the roots. The +Fe plants were supplied with 8×10-5 M 59FeEDTA, and the -Fe plants with only 1×10-6 M 59FeEDTA. After 1 to 8 hour uptake periods, plants were harvested and 59Fe in different organs was determined. Removal or shading of one primary leaf did not affect 59Fe uptake by roots and 59Fe translocation to the shoot in +Fe plants. In the -Fe plants, however, removal of one primary leaf decreased 59Fe uptake by roots, whereas shading of one primary leaf had no effect on 59Fe uptake but slightly enhanced 59Fe translocation from roots to the shoot. The quantity of 59Fe in primary leaves was positively correlated with quantity of 59Fe in the stem in the -Fepplants, but not in the +Fe plants. In both, the +Fe and -Fe plants, the quantity of 59Fe in the shoot apex was positively correlated with 59Fe in primary leaves. The results suggest that irrespective of the Fe nutritional status of plants, the source of Fe for the shoot apex is Fe retranslocated from primary leaves. Kluwer Academic Publishers, 1996 iron distribution in shoot organs nationallicence iron uptake, Phaseolus vulgaris L., retranslocation of iron nationallicence Zhang Chengdong Institute of Plant Nutrition, University of Hohenheim, 70593, Stuttart, Germany aut Römheld Volker Institute of Plant Nutrition, University of Hohenheim, 70593, Stuttart, Germany aut Marschner Horst Institute of Plant Nutrition, University of Hohenheim, 70593, Stuttart, Germany aut Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl 182/1(1996-05-01), 75-81 0032-079X 182:1<75 1996 182 11104 https://doi.org/10.1007/BF00010997 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00010997 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Chengdong Institute of Plant Nutrition, University of Hohenheim, 70593, Stuttart, Germany aut NATIONALLICENCE 700 1- Römheld Volker Institute of Plant Nutrition, University of Hohenheim, 70593, Stuttart, Germany aut NATIONALLICENCE 700 1- Marschner Horst Institute of Plant Nutrition, University of Hohenheim, 70593, Stuttart, Germany aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl/ 182/1(1996-05-01), 75-81 0032-079X 182:1<75 1996 182 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer