Cytological peculiarities of some extremely halophilic soil archaeobacteria

  title={Cytological peculiarities of some extremely halophilic soil archaeobacteria},
  author={Nadezhda A. Kostrikina and I. S. Zvyagintseva and Vitaly I Duda},
  journal={Archives of Microbiology},
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… 
Candidatus “Jettenia moscovienalis” sp. nov., a new species of bacteria carrying out anaerobic ammonium oxidation
A new species of bacteria oxidizing ammonium with nitrite under anoxic conditions was isolated from the activated sludge of a semi-industrial bioreactor treating digested sludge from the Kuryanovo wastewater treatment plant and classification as a newspecies of the candidate genus Jettenia was proposed.
A novel bacterium carrying out anaerobic ammonium oxidation in a reactor for biological treatment of the filtrate of wastewater fermented sludge
According to the results of 16S rRNA gene sequencing, the bacterium was assigned to a new genus and species within the phylum Planctomycetes, and the proposed name for the new bacterium is Candidatus Anammoximicrobium moscowii gen. nov.


Cellular morphogenesis in a halophilic archaebacterium
  • A. Wais
  • Biology
    Current Microbiology
  • 2005
The new isolates are identified as archaebacteria on the basis of their response to antibiotics, probable absence of peptidoglycan, and the presence of ether-linked lipids.
Role of the Cell Surface of Methanosarcina mazei in Cell Aggregation
Polymers extruded by M. mazei are likely quite adhesive in nature, accounting for its strong adherence to surfaces and hardiness compared with many other methanogens.
Life Cycles in the Methanogenic Archaebacterium Methanosarcina mazei
  • R. Robinson
  • Biology
    Applied and environmental microbiology
  • 1986
A complex life cycle involving the release of single cells is described with two variations for strains S6 and LYC and a limited cycle contains the only sarcinal morphotypes observed in M. barkeri.
Halobacterium mediterranei spec, nov., a New Carbohydrate-Utilizing Extreme Halophile.
Control of Morphogenesis in Geodermatophilus: Ultrastructural Studies
Geodermatophilus grows in two major forms, a nonmotile irregularly shaped aggregate of coccoid cells (C-form) and a motile budding rod (R-form). Morphogenesis can be controlled by an unidentified
Ultrastructure of square bacteria from a brine pool in Southern Sinai
Optical diffraction confirms the existence of both hexagonal and tetragonal arrangements of the cell wall subunits and also of different lattice constants and suggests a mixed population of bacteria.
Electron Microscope Study of DNA-Containing Plasms
The nucleoids of Escherichia coli are shown to be preserved as a fine-stranded fibrillar nucleoplasm by an OsO4 fixation under defined conditions: acetate-veronal buffer pH 6, presence of Ca++ and amino acids, stabilization with uranyl-acetate before dehydration.
An Alkalophilic Red Halophilic Bacterium with a Low Magnesium Requirement from a Kenyan Soda Lake
A Halobacterium species isolated from solar evaporation ponds and sodium sesquicarbonate deposits at Lake Magadi, Kenya, differs in being obligately alkalophilic with a pH optimum between 9.0 and 10.0, and in having a Mg2+ requirement for optimum growth.