Browsing by Autor "Antonius J. A. van Maris"
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Item type: Item , Analysis of the microbiome of the Bolivian high-altitude Lake Pastos Grandes(Oxford University Press, 2023) Jeanett Daga-Quisbert; Gunaratna Kuttuva Rajarao; Felix Ugarte; Antonius J. A. van Maris; Jorge QuillaguamánLake Pastos Grandes in Bolivia is mainly composed of salt flats, which are sporadically and only partially submerged during the wet season. In the present study, the chemical composition of water samples of the lake and some influent rivers was determined. We found that it is likely that the lake was influenced by the dilution of metals from ancient evaporites. We performed the first metagenomic studies of this lake. Analyses of shotgun metagenomics revealed that the relative abundances of Burkholderiales and Pseudomonadales were noteworthy in the water samples, whereas the archaea belonging to the Halobacteriales and Cyanobacteria from subsection III had high abundances in the salt flat. The eukaryotes Crustacea and Diatomea exhibited the highest abundances in the water samples. We investigated further the potential effect of human activities on the nitrogen cycle mobilization in the lake and the propagation of antimicrobial resistance genes. This is the first report about the cycle in the lake. Additionally, rifamycin resistance genes and genes related to efflux pumps, which are not considered a hazard when identified in metagenomes, had the uppermost relative abundances in all sampling points. We found that Lake Pastos Grandes hitherto does not show an appreciable influence by anthropogenic actions.Item type: Item , Assessing water quality of a hypereutrophic alkaline urban lake and its coagulation-treated water using metagenomic analysis(Springer Science+Business Media, 2024) Jeanett Daga-Quisbert; Gunaratna Kuttuva Rajarao; Antonius J. A. van Maris; Ana María Romero-Jaldín; Álvaro Mercado-Guzmán; Carla E. Fernández; Jorge QuillaguamánItem type: Item , Comparison of engineered Escherichia coli AF1000 and BL21 strains for (R)-3-hydroxybutyrate production in fed-batch cultivation(Springer Science+Business Media, 2019) Mariel Pérez-Zabaleta; Mónica Guevara-Martínez; Martin Gustavsson; Jorge Quillaguamán; Gen Larsson; Antonius J. A. van MarisItem type: Item , Metabolic engineering applications of the Escherichia coli bacterial artificial chromosome(Elsevier BV, 2019) Gustav Sjöberg; Mónica Guevara-Martínez; Antonius J. A. van Maris; Martin GustavssonItem type: Item , Production of ectoine by Vreelandella boliviensis using non-aseptic repeated-batch and continuous cultivations in an air-lift bioreactor(Springer Science+Business Media, 2024) Jeanett Daga-Quisbert; Daniela Mendieta; Gunaratna Kuttuva Rajarao; Antonius J. A. van Maris; Jorge QuillaguamánItem type: Item , The role of the acyl-CoA thioesterase “YciA” in the production of (R)-3-hydroxybutyrate by recombinant Escherichia coli(Springer Science+Business Media, 2019) Mónica Guevara-Martínez; Mariel Pérez-Zabaleta; Martin Gustavsson; Jorge Quillaguamán; Gen Larsson; Antonius J. A. van Maris