The phycobiliprotein pigments in the thallus of 21 species (22 specimens) from genera Collema from different altitude were studied. In all lichen species studied phycobiliprotein pigments as C-phycoerythrin, C-phycocyanin and allophyco-cyanin were found. In thallus of some species rare phycobiliproteins such as allophycocyanin I, allophycocyanin B and phycoerythrocyanin were found. In the thallus of five species, C-phycocyanin was predominant (41.2-52.8%). In the remaining species, allophycocyanins were found to predominate (48.4-57.3%). The total content of phycobiliproteins in the studied material ranged from 0.184 (Collema rugosum) to 1.982 mg g-1 dry weight (Collema subnigrescens). In some species of lichens the presence of phytochrome was observed.
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