The Inhibition of Soybean Metabolism by Cadmium and Lead | Zendy

Chi-Ying Huang | Zendy; Fakhri A. Bazzaz | Zendy; Larry N. Vanderhoef | Zendy

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The Inhibition of Soybean Metabolism by Cadmium and Lead

Author(s) -

Chi-Ying Huang,

Fakhri A. Bazzaz,

Larry N. Vanderhoef

Publication year - 1974

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.54.1.122

Subject(s) - cadmium , photosynthesis , point of delivery , nitrogenase , dry weight , ammonia , metabolism , chemistry , carbohydrate , shoot , glycine , nodule (geology) , carbohydrate metabolism , zoology , botany , horticulture , agronomy , food science , biology , biochemistry , nitrogen , nitrogen fixation , amino acid , organic chemistry , paleontology

Lead (300 mum) and cadmium (18 mum) inhibit pod fresh weight in soybeans (Glycine max L.) by 35%. Eighteen micromolar cadmium caused a 30% decline in nitrogenase activity by day 52 (the day on which maximum activity was measured) and a 71% inhibition by day 59. The heavy metals depressed photosynthetic rates; when photosynthesis was depressed by 60%, as measured on the day of peak photosynthesis activity, carbohydrate did not accumulate in the nodules. The reduction of pod fresh weight correlated with the effect of lead and cadmium on several other aspects of plant metabolism (shoot, root, leaf, and nodule dry weight; nodule ammonia, protein and carbohydrate content).

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