Abstract
Ultrastructure and morphogenesis of extremely halophilic neutrophilic (Halobacteriam distributum, Halococcus turkmenicus) and alkaliphilic (Natronobacterium pharaonis, Natronococcus occultus) archaeobacteria were studied. The H. distributum culture was rather polymorphous and produced cells of four types. Due to the irregular cell fission in different planes packages of various numbers of cells surrounded by a common capsule were formed. Resting forms (halocysts) with multilayer covers were present in the population. The N. pharaonis culture consisted of rod-like cells and cyst-like forms. Besides, under conditions of carbon limitation, multicellular aggregated forms were found in the culture. Encapsulated single cells and aggregated forms with a common capsule were observed in H. turkmenicus and N. occultus cultures.
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Kostrikina, N.A., Zvyagintseva, I.S. & Duda, V.I. Cytological peculiarities of some extremely halophilic soil archaeobacteria. Arch. Microbiol. 156, 344–349 (1991). https://doi.org/10.1007/BF00248708
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DOI: https://doi.org/10.1007/BF00248708