The Prokaryotes

  title={The Prokaryotes},
  author={Ann P. Wood},
  booktitle={Springer Berlin Heidelberg},
  • A. Wood
  • Published in Springer Berlin Heidelberg 2014
The family Achromatiaceae (comprising the single genus Achromatium) is a group of morphologically conspicuous, single-celled, free-living, colorless sulfur-oxidizing bacteria which forms a coherent phylogenetic group within the Gammaproteobacteria. They have yet to be grown in laboratory culture, but ecophysiological measurements suggest they gain energy from sulfide oxidation and may use oxygen and/or nitrate as a terminal electron acceptor. Some Achromatium can fix inorganic carbon, but it is… 
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Genome Mining, Microbial Interactions, and Molecular Networking Reveals New Dibromoalterochromides from Strains of Pseudoalteromonas of Coiba National Park-Panama
The results show that all strains possess BGCs for the production of secondary metabolites, and a considerable number of distinct polyketide synthases (PKS) and NRPS clusters are present in pigmented strains.
Mobile Genetic Elements Drive Antimicrobial Resistance Gene Spread in Pasteurellaceae Species
Mobile genetic elements (MGEs) and antimicrobial resistance (AMR) drive important ecological relationships in microbial communities and pathogen-host interaction. In this study, we investigated the
Differential Impact of rhamnolipids and TWEEN80 on composition and functionality of the gut microbiota in the SHIME system
The results confirmed previous observations that the effects on the composition and functionality are both emulsifier- and donor dependent and that the rhamnolipids was larger than that of TWEEN80 at similar concentrations, indicating that the former may not necessarily be a safer alternative for the latter.
Fecal Microbial Communities in a Large Representative Cohort of California Dairy Cows
It is found that housing type, individual farm, and dietary components significantly affected the alpha diversity of the fecal microbiota, which displays individual farm specific signatures, but housing type plays a role.
A Case Report of Cardiobacterium hominis Endocarditis in a Pregnant Woman
Following spontaneous abortion and evacuation of the fetus, appropriate surgical intervention under heparinized condition and pathogen-directed medical intervention was initiated in this patient, highlighting the importance of appropriate antimicrobial therapy, which augments earlier resolution of the disease.
Effect of Olive Cake and Cactus Cladodes Incorporation in Goat Kids’ Diet on the Rumen Microbial Community Profile and Meat Fatty Acid Composition
Goat kids’ rumen liquor seemed to be able to adapt to alternative feed resources incorporation, and theseAlternative feed resources could take place in goat kids‘ diet to diversify their feed and to reduce feed costs.


Uncultured giant sulfur bacteria of the genus Achromatium.
Unexpected diversity has been uncovered in Achromatium populations and it is now clear that the organism routinely described as Achrom atium oxaliferum actually comprises several distinct AchromAtium spp.
Phylogeny and diversity of Achromatium oxaliferum.
Physical enrichments of achromatia collected from the acidic Lake Fuchskuhle, which houses a peculiar, smaller variety, and the neutral Lake Stechlin were investigated by the cultivation-independent rRNA approach, revealingound differences in the population structure of a Chromatium oxaliferum.
The Unique Role of Intracellular Calcification in the Genus Achromatium
It is proposed that this unique adaptation of Achromatium is a means of overcoming a challenge not faced by other giant sulfur bacteria, namely inherently low levels of free sulfide in their sedimentary environment.
The phylogenetic position and ultrastructure of the uncultured bacterium Achromatium oxaliferum.
It was concluded that A. oxaliferum was related to organisms of the Chromatium assemblage but constituted a novel lineage within this group of bacteria.
Ecophysiological Evidence that Achromatium oxaliferum Is Responsible for the Oxidation of Reduced Sulfur Species to Sulfate in a Freshwater Sediment
Under oxic conditions, rates of sulfate production in the presence of sodium molybdate were found to correlate strongly with the number of cells added to sediment cores, providing further evidence for a role for A. oxaliferum in the oxidation of reduced sulfur.
Achromatium oxaliferum and its ecological niche
Achromatium oxaliferum is the only one known bacterium in which Cells Ca++ is deposited in calcite crystals, which contains also sulfur globules and the type of metabolism is assumed to be chemolithotrophic.
A single-cell sequencing approach to the classification of large, vacuolated sulfur bacteria.
The family Beggiatoaceae remains monophyletic and is phylogenetically clearly separated from other related families, as opposed to the recently suggested fusion of all colorless sulfur bacteria into one family, the Thiotrichaceae.
Morphologically Conspicuous Sulfur-Oxidizing Eubacteria
This chapter deals with the genera Achromatium, Macromonas, Thiobacterium, Thiospira, and Thiovulum. They all belong to the chemotrophic microbial population generally encountered in natural habitats
Natural Communities of Achromatium oxaliferum Comprise Genetically, Morphologically, and Ecologically Distinct Subpopulations
The distribution of different subpopulations of Achromatium in relation to sediment redox profiles indicated that the genetically and morphologically distinct organisms that coexisted in a single sediment were also ecologically distinct and were adapted to different redox conditions.
Substrate Uptake by Uncultured Bacteria from the Genus Achromatium Determined by Microautoradiography
Incubation of Achromatium-bearing sediment cores from Rydal Water with35S-labelled sulfate in the presence and absence of sodium molybdate demonstrated that this bacterial population was capable of oxidizing sulfide to intracellular elemental sulfur.