Energy Balancing in Nitella Cells Treated with Dinitrophenol

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Science  11 Mar 1966:
Vol. 151, Issue 3715, pp. 1245-1246
DOI: 10.1126/science.151.3715.1245


The toxic action of 2,4-dinitrophenol on the large cells of the alga, Nitella clavata, was evaluated, with the rate of protoplasmic streaming and the survival time at three light intensities used as criteria. At a sufficiently high intensity the cells survived several weeks, an indication that the energy-uncoupling action of dinitrophenol could be counterbalanced to some extent by an increased energy input. In the treated cells chloroplasts moved from the outer gel-type cytoplasm into the inner, streaming cytoplasm.