Ectothiorhodosinus mongolicum gen. nov., sp. nov., a New Purple Bacterium from a Soda Lake in Mongolia

  title={Ectothiorhodosinus mongolicum gen. nov., sp. nov., a New Purple Bacterium from a Soda Lake in Mongolia},
  author={Vladimir Mikhaĭlovich Gorlenko and Irina A Bryantseva and E. E. Panteleeva and Tatyana P Tourova and Tatiana V. Kolganova and Zoya K. Makhneva and Andrey A Moskalenko},
A new nonmotile purple sulfur bacterium (strain M9) was isolated from the steppe soda lake Lake Dzun Uldziin Nur (pH 9.4; mineralization, 3.3%) situated in southeastern Mongolia. Individual cells appear as vibrios 0.3–0.5 × 0.7–1 μm in size. The dividing cells often do not separate from each other, forming an almost closed ring. The internal photosynthetic membranes are represented by concentric lamellae lining the cell wall. Photosynthetic pigments are bacteriochlorophyll a and carotenoids of… 

Rubribacterium polymorphum gen. nov., sp. nov., a novel alkaliphilic nonsulfur purple bacterium from an Eastern Siberian soda lake

An alkaliphilic nonsulfur purple bacterial strain “Green” was isolated from sediments of the littoral zone of the soda lake in the Barguzin River valley (Eastern Siberia) and analysis of 16S rRNA gene sequences revealed a 10% difference with the most closely related NPB (Rhodobacter species).

Ectothiorhodospira magna sp. nov., a new large alkaliphilic purple sulfur bacterium

The isolates differed from other representatives of the genus Ectothiorhodospira in the structure of the gene encoding the key enzyme of autotrophic CO2 fixation, ribulose-1,5-bisphosphate carboxylase (RuBisCo), which was similar to the RuBis co genes of members of another family of sulfur bacteria, Chromatiaceae.

Description of Ectothiorhodospira salini sp. nov.

Morphological and physiological characteristics discriminate strain JA430(T) from other species of the genus Ectothiorhodospira, for which this species is described as a novel species, ECTothiorodospira salini sp.

Anoxygenic phototrophic bacteria from extreme environments

Anoxygenic phototrophic bacteria have conquered various types of habitats of extreme conditions of temperature, pH and salinity. A short overview is given on the species found, on the properties of

Phylogeny and evolution of the family Ectothiorhodospiraceae based on comparison of 16S rRNA, cbbL and nifH gene sequences.

The data obtained may be regarded as evidence of the monophyletic origin of the cbbL and nifH genes in most species within the family Ectothiorhodospiraceae and mainly corresponded to the current taxonomic structure of this family.

Biochemistry and molecular biology of lithotrophic sulfur oxidation by taxonomically and ecologically diverse bacteria and archaea.

Phylogenetic and biomolecular fossil data suggest that the ubiquity of sox genes could be due to horizontal transfer, and coupled sulfate reduction/sulfide oxidation pathways, originating in planktonic ancestors of Chromatiaceae or Chlorobi, could be ancestral to all sulfur-lithotrophic processes.

Analysis of community composition of sulfur-oxidizing bacteria in hypersaline and soda lakes using soxB as a functional molecular marker.

The diversity of soxB gene encoding a key enzyme of the Sox pathway sulfate thiohydrolase has been investigated in pure cultures of various halophilic and haloalkaliphilic sulfur-oxidizing bacteria

Diversity of anaerobic anoxygenic phototrophic purple bacteria

The phylogenetic relationship of the cultured phototrophic purple bacteria based upon 16S rRNA gene sequences of the type strains is shown in a comprehensive phylogenetic tree and genes coding for bacteriochlorophyll synthesis (bchY), and reaction center proteins (pufL and pufM) have been applied for biodiversity studies of photosynthesis under anaerobic conditions.

Sulfur metabolism in phototrophic sulfur bacteria.

Free-Living and Symbiotic Bacterial Communities in Contrasting Hydrothermally Active Habitats

The results of this study suggest that Fe-rich hydrothermal sediments, while dominated by Fe oxidizers, can be exploited by a variety of autotrophic and heterotrophic microorganisms.



Thiorhodospira sibirica gen. nov., sp. nov., a new alkaliphilic purple sulfur bacterium from a Siberian soda lake.

A new purple sulfur bacterium was isolated from microbial films on decaying plant mass in the near-shore area of the soda lake Malyi Kasytui and recognized as a new species of a new genus with the proposed name Thiorhodospira sibirica.

Isolation and characterization of spirilloid purple phototrophic bacteria forming red layers in microbial mats of Mediterranean salterns: description of Halorhodospira neutriphila sp. nov. and emendation of the genus Halorhodospira.

Microbial mats developing in the hypersaline lagoons of a commercial saltern in the Salin-de-Giraud (Rhône delta) were found to contain a red layer fully dominated by spirilloid phototrophic purple bacteria underlying a cyanobacterial layer, which was found to be very similar to Halorhodospira.

Rhodospirillum salexigens, spec. nov., an obligatory halophilic phototrophic bacterium

  • G. Drews
  • Biology
    Archives of Microbiology
  • 2004
The name Rhodospirillum salexigens, spec. nov., was proposed for the strain WS 68, isolated by W. R. Sistrom at the Oregon coast from salt water. The spiral-shaped phototrophically or

Capacity of chromatiaceae for chemotrophic growth. Specific respiration rates of Thiocystis violacea and Chromatium vinosum

The capacity for chemoautotrophic, mixotrophic and organotrophic growth in the dark was tested with 45 strains of 17 species of the Chromatiaceae and maximal specific respiration rates were obtained with thiosulfate as electron donor irrespective of the presence or absence of sulfur globules in the cells.

The phylogenetic relationship among Ectothiorhodospiraceae: a reevaluation of their taxonomy on the basis of 16S rDNA analyses

Abstract Sequences of the 16S rRNA gene were determined from all type strains of the recognized Ectothiorhodospira species and from a number of additional strains. For the first time, these data

Analysis of isoprenoid quinones

Isolation and direct complete nucleotide determination of entire genes. Characterization of a gene coding for 16S ribosomal RNA.

Using a set of synthetic oligonucleotides homologous to broadly conserved sequences in-vitro amplification via the polymerase chain reaction followed by direct sequencing results in almost complete

Über das Vitamin B12-Bedürfnis phototropher Schwefelbakterien

10 out of 19 Chlorobium-strains, which were isolated with a vit.

Determination of DNA base compositions from melting profiles in dilute buffers

Equations were determined for the dependency of the melting temperature of DNA upon the logarithm of the sodium ion concentration, for four DNA samples of widely different base compositions, which found to decrease with increasing θG C of the samples.