ISSN:
1573-5036
Keywords:
chelate
;
copper
;
Glycine max
;
iron, manganese
;
Pisum sativum
;
reductase
;
root
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract Neither the reduction of Fe(III) to Fe(II) by roots nor its induction by Fe-deficiency are unique characteristics of the reductive activities of roots. We show that chelated Mn(III) or chelated Cu(II), as well as chelated Fe(III), may be reduced by Fe-stressed roots of pea (Pisum sativum L.). Deficiency of Fe stimulated the reduction of Fe(III)EDTA about 20-fold, the reduction of Mn(III)CDTA about 11-fold, the reduction of Cu(II)(BPDS)2 about 5-fold, and the reduction of Fe(III)(CN)6 by only about 50%. Not only are metals other than Fe reduced as part of the Fe-stress response, but deficiencies of metals other than Fe stimulate the reductive activity of roots. We show that depriving peas or soybeans (Glycine max) of Cu or Zn stimulates the reduction of Fe(III).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00024999
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