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Science 7 November 1980:
Vol. 210. no. 4470, pp. 650 - 651
DOI: 10.1126/science.210.4470.650
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Articles

Carbon-13 Nuclear Magnetic Resonance Study of Osmoregulation in a Blue-Green Alga

LESLEY J. BOROWITZKA 1, SUSANNE DEMMERLE 1, MARK A. MACKAY 1, and RAYMOND S. NORTON 1

1 Roche Research Institute of Marine Pharmacology, Dee Why 2099, Australia

The process of osmoregulation in a unicellular blue-green alga, Synechococcus sp., has been studied by natural-abundance carbon-13 nuclear magnetic resonance spectroscopy of intact cells and cell extracts. 2-O-agr-D-Glucopyranosylglycerol was identified as the major organic osmoregulatory solute. This demonstrates the presence of a major osmoregulatory solute in a blue-green alga and is also an example of an osmoregulatory role for glucosylglycerol.

Submitted on March 17, 1980
Revised on May 7, 1980


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