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Microbial community of the chemocline of the meromictic Lake Shunet (Khakassia, Russia) during summer stratification

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Abstract

The spatio-temporal organization of the bacterial community inhabiting the chemocline of the stratified meromictic Lake Shunet (Khakassia, Russia) was investigated from May to September 2005 by means of microscopy, analysis of photosynthetic pigments, and PCR-DGGE with subsequent 16S rDNA analysis. The samples were collected with a multisyringe stratification sampler, sampling being performed every 5 cm. It was demonstrated that, during the period of investigation, there were no large changes in the bacterial community of the chlemocline, at least among the detected forms. During the whole period of study, purple sulfur bacteria related to Lamprocystis purpurea (Chromatiaceae) were predominant in the chemocline. Beneath the layer of purple bacteria, green sulfur bacteria were revealed that were phylogenetically distant from strain ShNPel02, which was previously isolated from this lake. Development of phytoflagellates of the genus Cryptomonas was observed in the upper zone of the chemocline. In the chemocline of Lake Shunet, the numbers of picoplankton cyanobacteria of the genus Synechococcus increased from May to September. It was demonstrated that the application of universal bacterial primers for DGGE resulted in the same qualitative distributional pattern of predominant species as microscopic studies.

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Authors and Affiliations

  1. Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russia

    D. Yu. Rogozin, M. Yu. Trusova, E. B. Khromechek & A. G. Degermendzhy

  2. Siberian Federal University, pr. Svobodnyi, 79, Krasnoyarsk, 660041, Russia

    D. Yu. Rogozin, M. Yu. Trusova & A. G. Degermendzhy

Authors
  1. D. Yu. Rogozin
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  2. M. Yu. Trusova
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  3. E. B. Khromechek
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  4. A. G. Degermendzhy
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Correspondence to D. Yu. Rogozin.

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Original Russian Text © D.Yu. Rogozin, M.Yu. Trusova, E.B. Khromechek, A.G. Degermendzhy, 2010, published in Mikrobiologiya, 2010, Vol. 79, No. 2, pp. 277–285.

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Rogozin, D.Y., Trusova, M.Y., Khromechek, E.B. et al. Microbial community of the chemocline of the meromictic Lake Shunet (Khakassia, Russia) during summer stratification. Microbiology 79, 253–261 (2010). https://doi.org/10.1134/S0026261710020189

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