Diversity of Ktedonobacteria with Actinomycetes-Like Morphology in Terrestrial Environments

@article{Yabe2017DiversityOK,
  title={Diversity of Ktedonobacteria with Actinomycetes-Like Morphology in Terrestrial Environments},
  author={Shuhei Yabe and Yasuteru Sakai and Keietsu Abe and Akira Yokota},
  journal={Microbes and Environments},
  year={2017},
  volume={32},
  pages={61 - 70}
}
Bacteria with an actinomycetes-like morphology have recently been discovered, and the class Ktedonobacteria was created for these bacteria in the phylum Chloroflexi. They may prove to be a valuable resource with the potential to produce unprecedented secondary metabolites. However, our understanding of their diversity, richness, habitat, and ecological significance is very limited. We herein developed a 16S rRNA gene-targeted, Ktedonobacteria-specific primer and analyzed ktedonobacterial… 

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References

SHOWING 1-10 OF 46 REFERENCES
Isolation of novel bacteria, including a candidate division, from geothermal soils in New Zealand.
TLDR
The results indicate that geothermal soils are a rich potential source of novel bacteria, and that relatively simple cultivation techniques are practical for isolating bacteria from these habitats.
Microbial diversity in a Venezuelan orthoquartzite cave is dominated by the Chloroflexi (Class Ktedonobacterales) and Thaumarchaeota Group I.1c
TLDR
P pH, imparted by the geochemistry of the host rock, can play as important a role in niche-differentiation in caves as in other environmental systems.
Previously unknown and phylogenetically diverse members of the green nonsulfur bacteria are indigenous to freshwater lakes
TLDR
The results indicate that the natural diversity in the phylum of the green nonsulfur bacteria has been significantly underestimated in the past.
Distribution and diversity of carbon monoxide-oxidizing bacteria and bulk bacterial communities across a succession gradient on a Hawaiian volcanic deposit.
TLDR
Results suggest that in contrast to patterns observed for plant succession, a versatile bacterial functional group that is important during early colonization and succession can remain important in later stages of succession, irrespective of dramatic environmental changes.
Thermosporothrix narukonensis sp. nov., belonging to the class Ktedonobacteria, isolated from fallen leaves on geothermal soil, and emended description of the genus Thermosporothrix.
TLDR
A thermophilic, Gram-stain-positive, spore-forming bacterium that formed branched vegetative and aerial mycelia was isolated from fallen leaves on geothermal soil and is considered to represent a novel species, Thermosporothrix narukonensis sp.
New Lineage of Filamentous, Spore-Forming, Gram-Positive Bacteria from Soil
ABSTRACT A novel bacterial strain that was isolated from an Italian soil and was designated SOSP1-21T forms branched mycelia in solid and liquid media and has a filamentous morphology similar to that
Description of Thermogemmatispora carboxidivorans sp. nov., a carbon-monoxide-oxidizing member of the class Ktedonobacteria isolated from a geothermally heated biofilm, and analysis of carbon monoxide oxidation by members of the class Ktedonobacteria.
  • C. King, G. King
  • Biology
    International journal of systematic and evolutionary microbiology
  • 2014
TLDR
Results from analyses of related strains indicated that the capacity for CO uptake occurred commonly among the members of the class Ktedonobacteria; 13 of 14 strains tested consumed CO or harboured coxL genes that potentially enabled CO oxidation.
Microbial Diversity in Water and Sediment of Lake Chaka, an Athalassohaline Lake in Northwestern China
TLDR
The observed changes in the microbial community structure across the water-sediment interface were correlated with a decrease in salinity from the lake water to the sediments and with the redox state changing from oxic to anoxic and may also have contributed to the observed shift in the bacterial community.
Non-contiguous finished genome sequence and contextual data of the filamentous soil bacterium Ktedonobacter racemifer type strain (SOSP1-21T)
TLDR
The Ktedonobacter racemifer corrig genome is the largest prokaryotic genome reported so far and comprises a large number of over-represented COGs, particularly genes associated with transposons, causing the genetic redundancy within the genome being considerably larger than expected by chance.
Highly Heterogeneous Soil Bacterial Communities around Terra Nova Bay of Northern Victoria Land, Antarctica
TLDR
The higher heterogeneity of the bacterial community structure found at this site indicates how soil bacterial communities have adapted to different compositions of edaphic variables under extreme environmental conditions, which greatly advance the understanding of the adaption of soil bacterial populations to this harsh environment.
...
1
2
3
4
5
...