INTRACELLULAR SULFUR CONTENT CHANGES IN THE PHOTOSYNTHETIC PURPLE SULFUR BACTERIA THIOCAPSA SP. DURING THEIR GROWTH ON THE MEDIUM SUPPLEMENTED WITH ACETATE AND PYRUVATE

S. Lavryk, S. Hnatush


DOI: http://dx.doi.org/10.30970/sbi.0302.049

Abstract


The ability of the purple sulfur bacteria Thiocapsa sp. to use acetate and pyruvate in the anoxygenic photosyntetical process was studied. We assume that Thiocapsa sp. able to carry photoorganoheterotrophic way of life, because of investigated bacteria grew well on the medium with organic components in a presence of sulfide as electron donor and when it wasn’t added. The dynamics of intracellular sulfur content changes was observed. A high removablility of value of reserved sulfur in cells was revealed. The highest sulfur content Thiocapsa sp. was in cells when bacteria grew photolitoautotrophically and photolitoheterotrophically.


Keywords


purple sulfur bacteria, Thiocapsa sp., acetate, pyruvate, intracellular sulfur

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