Trophosome of the Deep-Sea Tubeworm Riftia pachyptila Inhibits Bacterial Growth. [PDF]
The giant tubeworm Riftia pachyptila lives in symbiosis with the chemoautotrophic gammaproteobacterium Cand. Endoriftia persephone. Symbionts are released back into the environment upon host death in high-pressure experiments, while microbial fouling is ...
Julia Klose +6 more
doaj +1 more source
Impact of metabolism and growth phase on the hydrogen isotopic composition of microbial fatty acids
Microorganisms are involved in all elemental cycles and therefore it is important to study their metabolism in the natural environment. A recent technique to investigate this is the hydrogen isotopic composition of microbial fatty acids, i.e ...
Sandra Mariam Heinzelmann +7 more
doaj +1 more source
Differential Expression of the CO 2 Fixation Operons of Rhodobacter sphaeroides by the Prr/Reg Two-Component System during Chemoautotrophic Growth [PDF]
ABSTRACT In Rhodobacter sphaeroides , the two cbb operons encoding duplicated Calvin-Benson Bassham (CBB) CO 2 fixation reductive pentose phosphate cycle structural genes are differentially controlled.
Janet L, Gibson +2 more
openaire +2 more sources
Acidithiobacillaceae, an important family of acidophilic and chemoautotrophic sulfur or iron oxidizers, participate in geobiochemical circulation of the elements and drive the release of heavy metals in mining associated habitats.
Chun-Long Yang +8 more
doaj +1 more source
Exploring Bacterial Interactions Under the Stress Gradient Hypothesis in Response to Selenium Stress. [PDF]
Under the model of the stress gradient hypothesis, as selenium (Se) stress increases, bacterial interactions shift from net competitive (low stress) to net facilitative/helpful interactions (high stress). This allows Se susceptible species to benefit from detoxification mechanisms provided by Se detoxifying bacteria which remove toxins from the ...
Harris KJ, Bennett AE.
europepmc +2 more sources
Alkalilimnicola ehrlichii sp. nov., a novel, arsenite-oxidizing haloalkaliphilic gammaproteobacterium capable of chemoautotrophic or heterotrophic growth with nitrate or oxygen as the electron acceptor [PDF]
A facultative chemoautotrophic bacterium, strain MLHE-1T, was isolated from Mono Lake, an alkaline hypersaline soda lake in California, USA. Cells of strain MLHE-1T were Gram-negative, short motile rods that grew with inorganic electron donors (arsenite, hydrogen, sulfide or thiosulfate) coupled with the reduction of nitrate to nitrite.
Shelley E, Hoeft +7 more
openaire +2 more sources
Genomic comparisons of a bacterial lineage that inhabits both marine and terrestrial deep subsurface systems [PDF]
It is generally accepted that diverse, poorly characterized microorganisms reside deep within Earth’s crust. One such lineage of deep subsurface-dwelling bacteria is an uncultivated member of the Firmicutes phylum that can dominate molecular surveys from
Sean P. Jungbluth +4 more
doaj +2 more sources
Metabolic evolution of a deep-branching hyperthermophilic chemoautotrophic bacterium. [PDF]
Aquifex aeolicus is a deep-branching hyperthermophilic chemoautotrophic bacterium restricted to hydrothermal vents and hot springs. These characteristics make it an excellent model system for studying the early evolution of metabolism.
Rogier Braakman, Eric Smith
doaj +1 more source
Physiological ecology of microorganisms in Subglacial Lake Whillans
Subglacial microbial habitats are widespread in glaciated regions of our planet. Some of these environments have been isolated from the atmosphere and from sunlight for many thousands of years. Consequently, ecosystem processes must rely on energy gained
Trista J Vick-Majors +13 more
doaj +1 more source
It is well known that speciation transformations of As(III) vs. As(V) in acid mine drainage (AMD) are mainly driven by microbially mediated redox reactions of Fe and S. However, these processes are rarely investigated.
Yu-hang Zhou +9 more
doaj +1 more source

