Zobrazeno 1 - 10
of 132
pro vyhledávání: '"Holger Daims"'
Publikováno v:
mSphere, Vol 6, Iss 6 (2021)
ABSTRACT Analysis of nitrogen isotope fractionation effects is useful for tracing biogeochemical nitrogen cycle processes. Nitrification can cause large nitrogen isotope effects through the enzymatic oxidation of ammonia (NH3) via nitrite (NO2−) to
Externí odkaz:
https://doaj.org/article/4997cb72d8c74f7cb477065e180f5f32
Autor:
Katharina Kitzinger, Hannah K. Marchant, Laura A. Bristow, Craig W. Herbold, Cory C. Padilla, Abiel T. Kidane, Sten Littmann, Holger Daims, Petra Pjevac, Frank J. Stewart, Michael Wagner, Marcel M. M. Kuypers
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-12 (2020)
Ammonia oxidizing archaea and Nitrospinae are the main known nitrifiers in the ocean, but the much greater abundance of the former is puzzling. Here, the authors show that differences in mortality, rather than thermodynamics, cell size or biomass yie
Externí odkaz:
https://doaj.org/article/82fa020b55dc480296ae57bf2d604afe
Autor:
Alessandra Riva, Orest Kuzyk, Erica Forsberg, Gary Siuzdak, Carina Pfann, Craig Herbold, Holger Daims, Alexander Loy, Benedikt Warth, David Berry
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-11 (2019)
Here, employing laser capture microdissection and omics, the authors determine the effects of fiber-deprived diet on the spatial structure of the murine colon microbiome, finding that the absence of dietary fiber and polysaccharides leads to local ch
Externí odkaz:
https://doaj.org/article/70178dfc05084f05adfe981c845fca81
Autor:
K. Dimitri Kits, Man-Young Jung, Julia Vierheilig, Petra Pjevac, Christopher J. Sedlacek, Shurong Liu, Craig Herbold, Lisa Y. Stein, Andreas Richter, Holger Wissel, Nicolas Brüggemann, Michael Wagner, Holger Daims
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-12 (2019)
Ammonia-oxidizing bacteria and archaea are major producers of the gases nitrous oxide and nitric oxide. Here, Kits et al. show that a complete ammonia-oxidizing (comammox) bacterium emits nitrous oxide at levels that are comparable to those produced
Externí odkaz:
https://doaj.org/article/6041b83f2ce8478f9eae484cf55fc0df
Publikováno v:
Standards in Genomic Sciences, Vol 13, Iss 1, Pp 1-8 (2018)
Abstract The genus Nitrospira is considered to be the most widespread and abundant group of nitrite-oxidizing bacteria in many natural and man-made ecosystems. However, the ecophysiological versatility within this phylogenetic group remains highly un
Externí odkaz:
https://doaj.org/article/9b7f1aef5a4b47ed971f90e246d8477e
Autor:
Yuchun Yang, Holger Daims, Yang Liu, Craig W. Herbold, Petra Pjevac, Jih-Gaw Lin, Meng Li, Ji-Dong Gu
Publikováno v:
mBio, Vol 11, Iss 2 (2020)
ABSTRACT The recent discovery of complete ammonia oxidizers (comammox) contradicts the paradigm that chemolithoautotrophic nitrification is always catalyzed by two different microorganisms. However, our knowledge of the survival strategies of comammo
Externí odkaz:
https://doaj.org/article/e829222d367a4825939c652d8a1bf670
Autor:
Christopher J. Sedlacek, Andrew T. Giguere, Michael D. Dobie, Brett L. Mellbye, Rebecca V. Ferrell, Dagmar Woebken, Luis A. Sayavedra-Soto, Peter J. Bottomley, Holger Daims, Michael Wagner, Petra Pjevac
Publikováno v:
mSystems, Vol 5, Iss 1 (2020)
ABSTRACT Ammonia-oxidizing microorganisms perform the first step of nitrification, the oxidation of ammonia to nitrite. The bacterium Nitrosomonas europaea is the best-characterized ammonia oxidizer to date. Exposure to hypoxic conditions has a profo
Externí odkaz:
https://doaj.org/article/e16459ea472e4aa4b337e312c9ffe0fd
Publikováno v:
Frontiers in Microbiology, Vol 10 (2019)
Fluorescence in situ hybridization (FISH) with rRNA-targeted oligonucleotide probes is a key method for the detection of (uncultured) microorganisms in environmental and medical samples. A major limitation of standard FISH protocols, however, is the
Externí odkaz:
https://doaj.org/article/479abf64abf54a389f2de1228c7bee0f
Autor:
Katharina Kitzinger, Hanna Koch, Sebastian Lücker, Christopher J. Sedlacek, Craig Herbold, Jasmin Schwarz, Anne Daebeler, Anna J. Mueller, Michael Lukumbuzya, Stefano Romano, Nikolaus Leisch, Søren Michael Karst, Rasmus Kirkegaard, Mads Albertsen, Per Halkjær Nielsen, Michael Wagner, Holger Daims
Publikováno v:
mBio, Vol 9, Iss 4 (2018)
ABSTRACT Nitrification is a key process of the biogeochemical nitrogen cycle and of biological wastewater treatment. The second step, nitrite oxidation to nitrate, is catalyzed by phylogenetically diverse, chemolithoautotrophic nitrite-oxidizing bact
Externí odkaz:
https://doaj.org/article/f32eb15baa5843dcbb335637f3419283
Autor:
Anne Daebeler, Craig W. Herbold, Julia Vierheilig, Christopher J. Sedlacek, Petra Pjevac, Mads Albertsen, Rasmus H. Kirkegaard, José R. de la Torre, Holger Daims, Michael Wagner
Publikováno v:
Frontiers in Microbiology, Vol 9 (2018)
Ammonia-oxidizing archaea (AOA) within the phylum Thaumarchaeota are the only known aerobic ammonia oxidizers in geothermal environments. Although molecular data indicate the presence of phylogenetically diverse AOA from the Nitrosocaldus clade, grou
Externí odkaz:
https://doaj.org/article/81bdcb314eb344bbacc099a6a7b55606