Results 21 to 30 of about 57,230 (201)

RovM and CsrA Negatively Regulate Urease Expression in Yersinia pseudotuberculosis

open access: yesFrontiers in Microbiology, 2018
Urease acts as an important acid resistance system and virulence factor that is widespread among microorganisms. RovM is a global regulator that regulates a series of genes and pathways including acid survival systems in the enteric bacterium Yersinia ...
Qingyun Dai   +10 more
doaj   +1 more source

Managemental influences on the selective proliferation of two strains of haemolytic Escherichia coli in weaned pigs [PDF]

open access: yes, 1988
In an experimental study on a piggery it was found that haemolytic Escherichia coli of O-serotypes 138 or 139 proliferated in the intestinal tracts of pigs following weaning, with E.
Hampson, D.J.   +3 more
core   +2 more sources

The Generation of Successive Unmarked Mutations and Chromosomal Insertion of Heterologous Genes in Actinobacillus pleuropneumoniae Using Natural Transformation [PDF]

open access: yes, 2014
We have developed a simple method of generating scarless, unmarked mutations in Actinobacillus pleuropneumoniae by exploiting the ability of this bacterium to undergo natural transformation, and with no need to introduce plasmids encoding recombinases or
A Maas   +46 more
core   +9 more sources

Embryos extract from germinated yellow soybean (Glycine max [L.] Merrill) inhibits promastigotes form of Leishmania amazonensis [PDF]

open access: yesBrazilian Journal of Biology
We investigated the effect of extracts of the germinated seeds of yellow soybean cultivar BRS 258 (Glycine max [L.] Merrill) against Leishmania amazonensis promastigotes. The yellow soybean embryos extract (YSEE) was fractionated on a Sephacryl S-100 gel
P. M. Pedrote   +10 more
doaj   +1 more source

Genetic characterization of clinical and environmental Vibrio parahaemolyticus from the Northeast USA reveals emerging resident and non-indigenous pathogen lineages [PDF]

open access: yes, 2015
Gastric infections caused by the environmentally transmitted pathogen, Vibrio parahaemolyticus, have increased over the last two decades, including in many parts of the United States (US).
Cooper, Vaughn S.   +5 more
core   +2 more sources

Dynamics of urease activity in brown forest low-saturated soils of adygea under tea plants during irrigation

open access: yesНовые технологии, 2019
The article presents the results of assessing the effect of fine irrigation of tea plantations in the foothills of Adygea on the urease activity of soils.
S. V. Dobezhina
doaj   +1 more source

Assessment of agrogenic impact on tea plantation soils by analysis of their enzymatic activity

open access: yesНовые технологии, 2019
Brown forest acidic soils of the humid subtropical zone of Russia, on which tea is mainly cultivated, are largely exposed to agrogenic effects, which reduce their bio-productivity.
L. S. Malyukova, D. V. Strukova
doaj   +1 more source

The effect of three urease inhibitors on H. pylori viability, urease activity and urease gene expression

open access: yesFrontiers in Microbiology
BackgroundTreatment of Helicobacter pylori (H. pylori) infections is challenged by antibiotic resistance. The urease enzyme contributes to H. pylori colonization in the gastric acidic environment by producing a neutral microenvironment.
Hanaa Shaalan   +3 more
doaj   +1 more source

Soil bacteria that precipitate calcium carbonate: mechanism and applications of the process

open access: yesActa Agronómica, 2018
Bacteria with ureasic activity are microorganisms found in soil that in presence of urea and calcium, they can produce calcium carbonate, a process known as microbiologically induced calcium carbonate precipitation (MICP).
Sandra Patricia Chaparro-Acuña   +3 more
doaj   +1 more source

Phylogenomic study of Burkholderia glathei-like organisms, proposal of 13 novel Burkholderia species and emended descriptions of Burkholderia sordidicola, Burkholderia zhejiangensis, and Burkholderia grimmiae [PDF]

open access: yes, 2016
Partial gyrB gene sequence analysis of 17 isolates from human and environmental sources revealed 13 clusters of strains and identified them as Burkholderia glathei Glade (BGC) bacteria.
Cooper, Vaughn S   +5 more
core   +3 more sources

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