The analysis of chlorophylls (a and b), β-carotene and xanthophylls content in Asterochloris, Myrmecia, Trebouxia and Trentepohlia genera of green algae photobionts showed heterogeneity of pigments content both on generic and specific level. Pigments content for Trebouxia and Myrmecia is indicated for the first time. Species pigments amount and ratio of Trebouxia genus depended on their belonging to one or another morpho-genetical group. The groups with low («corticola», «gigantea» and «impressa») and high («arboricola» and «simplex») carotenoids content were distinguished, which is probably connected with ecological-physiological characteristics of these representatives, especially with how much they are obligate or facultative as photobionts, with their geographical distribution, etc. The data on pigments content of Asterochloris, Myrmecia and Trentepohlia confirm the same tendency to amount and ratio change of different pigment groups depending on their life strategy, ecology and geographical distribution.

Keywords: algae photobionts, pigments, carotenoids, ecological characteristics

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