Photochemical Oxidants: Effect on Starch Hydrolysis in Leaves

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Science  05 Jun 1970:
Vol. 168, Issue 3936, pp. 1223-1224
DOI: 10.1126/science.168.3936.1223


Starch-filled leaves of plants which have been subjected to low dosages of naturally occurring photochemical oxidants, ozone, or peroxyacetyl nitrate hydrolyze their starch more slowly when placed in the dark. Delayed hydrolysis occurs irrespective of whether the oxidants were applied during the light or dark period. Occasionally this effect is evident only in the intervenal areas.

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