title: [Spectral properties of the green alga Trebouxia--a phycobiont of cryptoendolithic lichens in the high-latitude polar regions of Antarctica].
abstract: An algologically pure culture of the green alga Trebouxia, a phycobiont of cryptoendolithic lichens, was isolated from the sandstone samples collected in the high-altitude polar regions of Antarctica. The absorption and the second-derivative absorption spectra of the acetone extract of the Antarctic phycobiont cells were studied in comparison with those of the Trebouxia phycobiont isolated recently from the Parmeliaceae lichen in the Mid-European climatic zone. The cells of the Antarctic phycobiont were characterized by a lower content of chlorophyll a and a higher ratio of chlorophyll b and carotenoids to chlorophyll a as compared to the Mid-European phycobiont. Furthermore, the carotenoids of the Antarctic phycobiont were more diverse. The low-temperature fluorescence spectra of the Antarctic phycobiont were characterized by an increased intensity of the short-wavelength fluorescence peak of chlorophyll a and a diminished intensity of fluorescence in the long-wavelength spectral region.
authors.forename: L G
authors.initials: LG
authors.lastname: Erokhina
authors.forename: A V
authors.initials: AV
authors.lastname: Shatilovich
authors.forename: O P
authors.initials: OP
authors.lastname: Kaminskaia
authors.forename: D A
authors.initials: DA
authors.lastname: Gilichinskiĭ
mesh_terms: D000864:Antarctic Regions; D002338:Carotenoids / Q000032:analysis; D002734:Chlorophyll / Q000032:analysis; D000460:Chlorophyta / Q000737:chemistry* / Q000302:isolation & purification / Q000502:physiology; D008011:Lichens / Q000502:physiology; D010860:Pigments, Biological / Q000032:analysis; D013050:Spectrometry, Fluorescence; D013696:Temperature
chemical_list: D010860:Pigments, Biological; D002734:Chlorophyll; D002338:Carotenoids