Environmental Control of Photosynthetic Enhancement

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Science  22 Jan 1971:
Vol. 171, Issue 3968, pp. 284-286
DOI: 10.1126/science.171.3968.284


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.