Nine out of ten microalgae from eight different classes contained betaine lipids.
Tetraselmis suecica is the first member of then green lineage found to have DGTA.
DGTA had the highest unsaturated fatty acids and resemblance to total cell fatty acid profile.
Two diatoms and a dinoflagellate show high diversity of new DGCC molecular species.
DGTS, DGTA and DGCC better differentiated microalgae than their respective fatty acids.