Fig. 5.

Proton-decoupled ¹³C-NMR spectra (100.6 MHz) of perchloric acid extracts of X. elegans thalli. PCA extracts were prepared from 4 g of thalli (on a dry weight basis) and analysed by ¹³C-NMR. Thalli were collected as follows: A dry, in the light; B wet, in the dark. Peak assignments (from downfield to upfield): sue, sucrose; tre, trehalose; Glu, glutamate; Gin, glutamine. Spectra are representative of five independent experiments.