Search results for "datu"
showing 10 items of 408 documents
2020
Anaerobic digestion is a technology known for its potential in terms of methane production. During the digestion process, multiple metabolites of high value are synthesized. However, recent works have demonstrated the high robustness and resilience of the involved microbiomes; these attributes make it difficult to manipulate them in such a way that a specific metabolite is predominantly produced. Therefore, an exact understanding of the manipulability of anaerobic microbiomes may open up a treasure box for bio-based industries. In the present work, the effect of nalidixic acid, γ-aminobutyric acid (GABA), and sodium phosphate on the microbiome of digested sewage sludge from a water treatmen…
The link between independent acquisition of intracellular gamma-endosymbionts and concerted evolution in Tremblaya princeps
2015
Many insect species establish mutualistic symbiosis with intracellular bacteria that complement their unbalanced diets. The betaproteobacterium "Candidatus Tremblaya" maintains an ancient symbiosis with mealybugs (Hemiptera: Pseudococcidae), which are classified in subfamilies Phenacoccinae and Pseudococcinae. Most Phenacoccinae mealybugs have "Candidatus Tremblaya phenacola" as their unique endosymbiont, while most Pseudococcinae mealybugs show a nested symbiosis (a bacterial symbiont placed inside another one) where every "Candidatus Tremblaya princeps" cell harbors several cells of a gammaproteobacterium. Genomic characterization of the endosymbiotic consortium from Planococcus citri, co…
Epidemiological investigations and molecular characterization of ‘candidatus phytoplasma solani’ in grapevines, weeds, vectors and putative vectors i…
2020
Bois noir is caused by &lsquo
Detection of Candidatus Neoehrlichia mikurensis in Norway up to the northern limit of Ixodes ricinus distribution using a novel real time PCR test ta…
2019
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Background Candidatus Neoehrlichia mikurensis is an emerging tick-borne pathogen. It is widely distributed in Ixodes ricinus ticks in Europe, but knowledge of its distribution in Norway, where I. ricinus reaches its northern limit, is limited. In this study we have developed a real time PCR test for Ca. N. mikurensis and used it to invest…
Metagenome Assembled Genome of a Novel Verrucomicrobial Methanotroph From Pantelleria Island.
2021
Verrucomicrobial methanotrophs are a group of aerobic bacteria isolated from volcanic environments. They are acidophiles, characterized by the presence of a particulate methane monooxygenase (pMMO) and a XoxF-type methanol dehydrogenase (MDH). Metagenomic analysis of DNA extracted from the soil of Favara Grande, a geothermal area on Pantelleria Island, Italy, revealed the presence of two verrucomicrobial Metagenome Assembled Genomes (MAGs). One of these MAGs did not phylogenetically classify within any existing genus. After extensive analysis of the MAG, we propose the name of “Candidatus Methylacidithermus pantelleriae” PQ17 gen. nov. sp. nov. The MAG consisted of 2,466,655 bp, 71 contigs …
Molecular evidence for ongoing complementarity and horizontal gene transfer in endosymbiotic systems of mealybugs
2014
[EN] Intracellular bacterial supply of essential amino acids is common among sap-feeding insects, thus complementing the scarcity of nitrogenous compounds in plant phloem. This is also the role of the two mealybug endosymbiotic systems whose genomes have been sequenced. In the nested endosymbiotic system from Planococcus citri (Pseudococcinae), “Candidatus Tremblaya princeps” and “Candidatus Moranella endobia” cooperate to synthesize essential amino acids, while in Phenacoccus avenae (Phenacoccinae) this function is performed by its single endosymbiont “Candidatus Tremblaya phenacola.” However, little is known regarding the evolution of essential amino acid supplementation strategies in oth…
Projektā izmantotā Microsoft Azure resursu optimizācija
2019
Bakalaura darba mērķis ir izpētīt daudz no Microsoft Azure resursiem un pētīt iespējas optimizēt to pielietojumu, balstoties uz reālas programmatūras izstrādes projekta vajadzībām. Darbā tiek pētīta mākoņos izvietotās datubāzes lietojuma uzlabošanas iespējas, kā arī mākoņos bāzēto API servisu iespējas, īpašu uzmanību pievēršot drošības aspektam.
Marģera Zariņa kora skaņdarbu nošu bibliogrāfiskās datubāzes izstrāde
2019
Marģeris Zariņš ir daudzu spilgtu kora skaņdarbu autors, taču pagaidām vēl nav apkopota informācija par viņa kompozīcijām korim un to notīm. Pētījuma mērķis ir lietotājiem draudzīgas kora skaņdarbu nošu bibliogrāfiskās datubāzes entītiju-relāciju modeļa izveide. Kā pētījuma teorētiskais pamatojums izmantotas pragmatisma teorijas atziņas un Mijiedarbības trīs komponentu modelis. Lai sasniegtu pētījuma mērķus, veikta sešu elektroniskās informācijas sistēmu kontentanalīze un aptaujāti potenciālie datubāzes lietotāji – kordiriģenti. Pētījuma rezultātā apkopota informācija Marģera Zariņa kora skaņdarbu notīm vairāku atmiņas institūciju krājumā un izveidots Marģera Zariņa kora skaņdarbu nošu bibl…
The Striking Case of Tryptophan Provision in the Cedar Aphid Cinara cedri
2008
ABSTRACT Buchnera aphidicola BCc has lost its symbiotic role as the tryptophan supplier to the aphid Cinara cedri . We report the presence of a plasmid in this endosymbiont that contains the trpEG genes. The remaining genes for the pathway ( trpDCBA ) are located on the chromosome of the secondary endosymbiont “ Candidatus Serratia symbiotica.” Thus, we propose that a symbiotic consortium is necessary to provide tryptophan.
Metagenomics uncovers a new group of low GC and ultra-small marine Actinobacteria
2013
We describe a deep-branching lineage of marine Actinobacteria with very low GC content (33%) and the smallest free living cells described yet (cell volume ca. 0.013 μm(3)), even smaller than the cosmopolitan marine photoheterotroph, 'Candidatus Pelagibacter ubique'. These microbes are highly related to 16S rRNA sequences retrieved by PCR from the Pacific and Atlantic oceans 20 years ago. Metagenomic fosmids allowed a virtual genome reconstruction that also indicated very small genomes below 1 Mb. A new kind of rhodopsin was detected indicating a photoheterotrophic lifestyle. They are estimated to be ~4% of the total numbers of cells found at the site studied (the Mediterranean deep chloroph…