TY - JOUR
T1 - Chromium III-iron interaction in iron sufficient and iron deficient bean plants. II. ultrastructural aspects.
AU - Poschenrieder, C.
AU - Vazquez, M. D.
AU - Bonet, A.
AU - Barcelo, J.
PY - 1991/4/1
Y1 - 1991/4/1
N2 - The influence of a growth stimulating low Cr III concentration (1.0 μM) on chloroplast ultrastructure, the Fe, Cr, and Mn content of chloroplast extracts, o-phenantroline extractable leaf Fe, and catalase activity was studied in both Fe-sufficient and Fe-deficient bush bean (Phaseolus vulgaris L.) plants. Chromium supply hardly affected the chloroplast ultrastructure of Fe-sufficient plants but significantly improved chloroplast ultrastructure in Fe-deficient leaves. Generally, Cr supply did not significantly influence chloroplast Fe-content, but increased the Fe/Mn ratio in Fe-deficient chloroplasts. In leaves from Fe-deficient plants, o-phenantroline extractable Fe was significantly increased, while catalase activity was not significantly influenced by Cr supply. The possible mechanisms of the beneficial effects of Cr III in Fe-deficient plants are discussed. © 1991 by Marcel Dekker, Inc.
AB - The influence of a growth stimulating low Cr III concentration (1.0 μM) on chloroplast ultrastructure, the Fe, Cr, and Mn content of chloroplast extracts, o-phenantroline extractable leaf Fe, and catalase activity was studied in both Fe-sufficient and Fe-deficient bush bean (Phaseolus vulgaris L.) plants. Chromium supply hardly affected the chloroplast ultrastructure of Fe-sufficient plants but significantly improved chloroplast ultrastructure in Fe-deficient leaves. Generally, Cr supply did not significantly influence chloroplast Fe-content, but increased the Fe/Mn ratio in Fe-deficient chloroplasts. In leaves from Fe-deficient plants, o-phenantroline extractable Fe was significantly increased, while catalase activity was not significantly influenced by Cr supply. The possible mechanisms of the beneficial effects of Cr III in Fe-deficient plants are discussed. © 1991 by Marcel Dekker, Inc.
U2 - 10.1080/01904169109364212
DO - 10.1080/01904169109364212
M3 - Article
VL - 14
SP - 415
EP - 428
JO - Journal of Plant Nutrition
JF - Journal of Plant Nutrition
SN - 0190-4167
IS - 4
ER -