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Seasonal changes in the structure of the anoxygenic photosynthetic bacterial community in Lake Shunet, Khakassia / O. N. Lunina [et al.] // Microbiology. - 2007. - Vol. 76, Is. 3. - P368-379, DOI 10.1134/S0026261707030149 . - ISSN 0026-2617
Кл.слова (ненормированные):
Anoxygenic photosynthesis -- Eutrophic meromictic saline lakes -- Green sulfur phototrophic bacteria -- Purple nonsulfur phototrophic bacteria -- Purple sulfur phototrophic bacteria -- Bacteria (microorganisms) -- Chlorobi -- Chromatiaceae -- Halochromatium -- Photobacteria -- Prosthecochloris vibrioformis -- Proteobacteria -- Rhodospirillaceae -- Rhodovulum -- Rhodovulum euryhalinum -- Thiocapsa
Аннотация: Seasonal studies of the anoxygenic phototrophic bacterial community of the water column of the saline eutrophic meromictic Lake Shunet (Khakassia) were performed in 2002 (June) and 2003 (February-March and August). From the redox zone down, the lake water was of dark green color. Green sulfur bacteria predominated in every season. The maximum number of green sulfur bacteria was 107 cells/ml in summer and 106 cells/ml in winter. A multi-syringe stratification sampler was applied for the study of the fine vertical distribution of phototrophs in August 2003; the sampling was performed every 5 cm. A 5-cm-thick pink-colored water layer inhabited by purple sulfur bacteria was shown to be located above the layer of green bacteria. The species composition and ratio of purple bacterial species depended on the sampling depth and on the season. In summer, the number of purple sulfur bacteria in the layer of pink water was 1.6 ? 108 cells/ml. Their number in winter was 3 ? 105 cells/ml. In the upper oxygen-containing layer of the chemocline the cells of purple nonsulfur bacteria were detected in summer. The maximum number of nonsulfur purple bacteria, 5 ? 102 cells/ml, was recorded in August 2003. According to the results of the phylogenetic analysis of pure cultures of the isolated phototrophic bacteria, which were based on 16S rDNA sequencing, green sulfur bacteria were close to Prosthecochloris vibrioformis, purple sulfur bacteria, to Thiocapsa and Halochromatium species, and purple nonsulfur bacteria, to Rhodovulum euryhalinum and Pinkicyclus mahoneyensis. В© Nauka/Interperiodica 2007.

Scopus
Держатели документа:
Winogradsky Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya 7, k. 2, Moscow, 117312, Russian Federation
Skryabin Institute of Microbial Biochemistry and Physiology, Russian Academy of Sciences, Puschino, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Lunina, O.N.; Bryantseva, I.A.; Akimov, V.N.; Rusanov, I.I.; Rogozin, D.Yu.; Barinova, E.S.; Lysenko, A.M.; Pimenov, N.V.

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