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Effects of Cadmium on Respiration Rate and Activities of Several Enzymes in Soybean Seedlings
Author(s) -
LEE K. C.,
CUNNINGHAM B. A.,
PAULSEN G. M.,
LIANG G. H.,
MOORE R. B.
Publication year - 1976
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1976.tb05017.x
Subject(s) - cadmium , peroxidase , ribonuclease , acid phosphatase , enzyme , chemistry , carbonic anhydrase , respiration , proline , chlorosis , biochemistry , respiration rate , glycine , malate dehydrogenase , zinc , proline dehydrogenase , antagonism , dehydrogenase , botany , biology , amino acid , rna , receptor , organic chemistry , gene
Soybean ( Glycine max L. ev. Columbus) seedlings grown in culture solution were treated with cadmium as CdSO 4 . Final concentrations of cadmium (Cd 2+ ) in the solution were 0, 0.45, 0.90, and 1.35 μ M. Soybean leaves, analyzed 10 days after Cd 2+ was added to the culture solution, showed increased respiration rate and activities of malate dehydrogenase, acid phosphatase, ribonuclease, deoxyribonuclease, and peroxidase but decreased activity of carbonic anhydrase. Increased activity of hydrolytic enzymes and peroxidase reflects a general senescence response while the carbonic anhydrase decrease is consistent with an antagonism between cadmium and endogenous zinc. Chlorosis, epinasty, abscission of leaves, and decreased growth rate occurred in seedlings treated with 1.35 μ M Cd 2+ .