Protein ML trees of D. acuminata A) LHPs and B) psbU. Major clades of LHPs have been reduced for clarity, and clades containing G. cryophila representative(s) are in bold type. See additional File 3 for the full tree. Letters in parentheses to the right of species names represent protist lineages: C, cryptophyte; D, dinoflagellate; G, glaucophyte, H, haptophyte; R, red algae; S, stramenopile; V, Viridiplantae (green algae and land plants); X, Chlorarachniophytes. Support values for branches are indicated as in Figure 2.