Wastewater Treatment with Bacterial Representatives of the Morphotype.

Bacteria of the morphotype, comprising the genera , and , are frequently encountered in domestic and industrial wastewater treatment systems, but they are usually not clearly differentiated due to the marked similarity in their morphologies. Methods ranging from light microscopy, FISH and PCR to modern high-throughput sequencing are used to identify them. The development of these bacteria in wastewater treatment systems has both advantages and disadvantages.

Phylogeny and Metabolic Potential of New Giant Sulfur Bacteria of the Family from Coastal-Marine Sulfur Mats of the White Sea.

The family is currently represented by 25 genera in the Genome Taxonomy Database, of which only 6 have a definite taxonomic status. Two metagenome-assembled genomes (MAGs), WS_Bin1 and WS_Bin3, were assembled from metagenomes of the sulfur mats coating laminaria remnants in the White Sea. Using the obtained MAGs, we first applied phylogenetic analysis based on whole-genome sequences to address the systematics of , which clarify the taxonomy of this family.

Metagenomics Revealed a New Genus ' Thiocaldithrix dubininis' gen. nov., sp. nov. and a New Species ' Thiothrix putei' sp. nov. in the Family , Some Members of Which Have Traits of Both Na- and H-Motive Energetics.

Two metagenome-assembled genomes (MAGs), GKL-01 and GKL-02, related to the family have been assembled from the metagenome of bacterial mat obtained from a sulfide-rich thermal spring in the North Caucasus. Based on average amino acid identity (AAI) values and genome-based phylogeny, MAG GKL-01 represented a new genus within the family. The GC content of the GKL-01 DNA (44%) differed significantly from that of other known members of the genus (50.

Sodium Energetic Cycle in the Natronophilic Bacterium .

As inhabitants of soda lakes, are halo- and alkaliphilic bacteria that have previously been shown to respire with the first demonstrated Na-translocating cytochrome- oxidase (CO). The enzyme generates a sodium-motive force (Δ) as high as -270 mV across the bacterial plasma membrane. However, in these bacteria, operation of the possible Δ consumers has not been proven.

Identification of Na+-Pumping Cytochrome Oxidase in the Membranes of Extremely Alkaliphilic Thioalkalivibrio Bacteria.

For the first time, the functioning of the oxygen reductase Na+-pump (Na+-pumping cytochrome c oxidase of the cbb-type) was demonstrated by examining the respiratory chain of the extremely alkaliphilic bacterium Thioalkalivibrio versutus [Muntyan, M. S., et al.