Arsenic phytotoxicity and interactions in bush bean plants grown in solution culture

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Abstract
Bush bean plants (Phaseolus vulgaris L. cv. Improved Tendergreen) were grown in solution culture with varied levels of As to ascertain levels and plant concentrations associated with phytotoxicity and to determine if there were any interactions between As and other minerals in plants. The level of 10‐4 M arsenate in solution resulted in considerable plant damage. Plant concentrations of As at this application rate were 3. 6, 18. 8 and 41. 7 μg/g respectively for leaves, stems, and roots. This level of arsenate resulted in increased Fe, Cu, Mg, Al, Si, Ti and Ba in all plant parts except Mg in roots. All of the increases may be due to concentration. Simultaneously there was depressed Mn, P and Ca in all plant parts. K also was depressed in roots. These depressions were not due to dilution.

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