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Science 22 January 1971:
Vol. 171. no. 3968, pp. 284 - 286
DOI: 10.1126/science.171.3968.284
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Articles

Environmental Control of Photosynthetic Enhancement

Thomas Punnett 1

1 Botany Department, King's College, London S.E. 24, England

The transition from granular to homogeneous chloroplasts in vivo in Egeria densa caused by environmental conditions was paralleled by a decrease in photosynthetic enhancement from 30 percent to nearly zero. The drop in enhancement can be explained either by a change in the partitioning of light energy between the two photosystems or a change to a single photosystem.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)