'Candidatus Chloroploca mongolica' sp. nov. a new mesophilic filamentous anoxygenic phototrophic bacterium.
Irina A BryantsevaDenis S GrouzdevMaria S KrutkinaAleksandr A AshikhminNadezda A KostrikinaVeronika V KoziaevaVladimir M GorlenkoPublished in: FEMS microbiology letters (2021)
A mesophilic filamentous anoxygenic phototrophic bacterium, designated M50-1, was isolated from a microbial mat of the Chukhyn Nur soda lake (northeastern Mongolia) with salinity of 5-14 g/L and pH 8.0-9.3. The organism is a strictly anaerobic phototrophic bacterium, which required sulfide for phototrophic growth. The cells formed short undulate trichomes surrounded by a thin sheath and containing gas vesicles. Motility of the trichomes was not observed. The cells contained chlorosomes. The antenna pigments were bacteriochlorophyll d and β- and γ-carotenes. Analysis of the genome assembled from the metagenome of the enrichment culture revealed all the enzymes of the 3-hydroxypropionate bi-cycle for autotrophic CO2 assimilation. The genome also contained the genes encoding a type IV sulfide:quinone oxidoreductase (sqrX). The organism had no nifHDBK genes, encoding the proteins of the nitrogenase complex responsible for dinitrogen fixation. The DNA G + C content was 58.6%. The values for in silico DNA‒DNA hybridization and average nucleotide identity between M50-1 and a closely related bacterium 'Ca. Chloroploca asiatica' B7-9 containing bacteriochlorophyll c were 53.4% and 94.0%, respectively, which corresponds to interspecies differences. Classification of the filamentous anoxygenic phototrophic bacterium M50-1 as a new 'Ca. Chloroploca' species was proposed, with the species name 'Candidatus Chloroploca mongolica' sp. nov.
Keyphrases
- induced apoptosis
- circulating tumor
- single molecule
- microbial community
- genome wide
- cell free
- cell cycle arrest
- nucleic acid
- machine learning
- endoplasmic reticulum stress
- deep learning
- cell death
- minimally invasive
- wastewater treatment
- oxidative stress
- single cell
- protein kinase
- gene expression
- escherichia coli
- molecular docking
- genome wide identification
- signaling pathway
- dna methylation
- risk assessment
- room temperature
- staphylococcus aureus
- molecular dynamics simulations