Fig. 3.

Proton-decoupled ³¹P-NMR spectra (161.93 MHz) of perchloric acid extracts of X. elegans thalli. Extracts were prepared from 4 g of thalli (on a dry weight basis) and analyzed by ³¹P-NMR. Thalli were collected as follows: A dry, in the light; B wet, in the dark; C wet, in the light. Peak assignments (from downfield to upfield): mnt-1-P, mannitol 1-P; glcn-6-P, gluconate 6-P; glc-6-P, glucose 6-P; tre-6-P trehalose 6-P; gly-3-P, glycerol 3-P; PGA, phosphoglycerate; fru-6-P, fructose 6-P; ru-1,5-DP, ribulose 1,5-diphosphate; AMP, adenosine monophosphate; P-cho, P-choline; GPG, glycerophosphoglycerol; GPC, glycerophosphocholine; PEP, phosphoenolpyruvate; UDP-glc, uridine 5′-diphosphate-α-D-glucose; UDP-glcNAc, uridine 5′-diphospho-N-acetylglucosamine; poly-P, polyphosphates. Spectra are representative of five independent experiments