Arsenic Tolerance in a Population of the Grass Andropogon scoparius Michx

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Science  18 Apr 1975:
Vol. 188, Issue 4185, pp. 263-264
DOI: 10.1126/science.188.4185.263


Samples of Andropogon scoparius Michx. collected on an arsenic mine exhibited a wide range of tolerance to arsenic in solution, whereas plants of the same species growing in uncontaminated soil showed no tolerance. Arsenic tolerance must be an evolved character under genetic control. Furthermore, the degree of tolerance is related to the amount of arsenic in which the plant was growing.