Wednesday, February 21, 2007

Photosynthetic capacity & luxury uptake of carbon in Pediastrum duplex (Chlorophyceae)

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Photosynthetic capacity and luxury uptake of carbon during phosphate limitation in Pediastrum duplex (Chlorophyceae)

Lehman, John T.
Journal of Phycology (1976), 12(2), 190-3 CODEN: JPYLAJ; ISSN: 0022-3646. English.

When cells of Pediastrum duplex experience depletion, their capacity for C fixation declined but sizes and C contents of the cells increased several-fold, an apparent instance of "luxury uptake" of C. Max. rates of uptake of phosphate increased during the same period, and were consequently correlated with the enlarged surface area of the cells. Thus, the disadvantage of increased cell volume, which may accelerate sinking speed in nature, is offset by the increased capacity of the cells for nutrient uptake.

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