Starch degradation in isolated spinach chloroplasts.
A method for loading isolated intact spinach (Spinacia oleracea L.) chloroplasts with (14)C-starch is described. These intact chloroplasts were incubated aerobically in the dark for 30 minutes. Radioactivity in starch declined and glyceric acid 3-phosphate and maltose were the major radioactive products. It is proposed that starch is degraded within the chloroplast to glyceric acid 3-phosphate and to maltose.
Levi
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Institute for Photobiology of Cells and Organelles, Brandeis University, Waltham, Massachusetts 02154.
Gibbs
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