Interaction of minerals, organic matter, and microorganisms during biogeochemical interface formation as shown by a series of artificial soil experiments

Pronk, Geertje Johanna; Heister, Katja; Vogel, Cordula; Babin, Doreen; Bachmann, Jörg; Ding, Guo-Chun; Ditterich, Franziska; Gerzabek, Martin H.; Giebler, Julia; Hemkemeyer, Michael; Kandeler, Ellen; Mouvenchery, Yamuna Kunhi; Miltner, Anja; Poll, Christian; Schaumann, Gabriele E.; Smalla, Kornelia; Steinbach, Annelie; Tanuwidjaja, Irina; Tebbe, Christoph C.; Wick, Lukas Y.; Woche, Susanne K.; Totsche, Kai Uwe; Schloter, Michael; Kögel‐Knabner, Ingrid

doi:10.1007/s00374-016-1161-1

Cited by 80 publications

(61 citation statements)

References 76 publications

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“…On fresh mineral surfaces in soils, the first colonizers are thought to be fast‐growing bacteria (Ditterich et al ., ; Pronk et al ., ). This concurs with our findings, since most of the bacteria, which responded quickly to the presence of minerals (group B), were members of the families Micrococcaceae and Oxalobacteraceae , known for their copiotrophic behaviour.…”

Section: Discussionmentioning

confidence: 99%

Bacterial colonization of minerals in grassland soils is selective and highly dynamic

Vieira

Sikorski

Gebala

et al. 2019

Environmental Microbiology

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Summary Bacteria colonize reactive minerals in soils where they contribute to mineral weathering and transformation. So far, the specificity, patterns and dynamics of mineral colonization have rarely been assessed under natural conditions. High throughput Illumina sequencing was employed to investigate the bacterial communities assembling on illite and goethite during exposure to natural grassland soils. Two different types of organic carbon sources, simple carbon compounds representing root exudates and detritus of two dominant grassland plant species were applied, and their effects on the temporal dynamics of bacterial communities were investigated. The observed temporal patterns suggest that the surfaces of de novo exposed minerals in soils drive the establishment of bacterial communities and override the effect of the type of carbon sources and of other environmental properties. Mineral colonization was selective and specific bacterial sequence variants exhibited distinct colonization patterns, among which early, intermittent, and late colonizers could be distinguished. Based on our results, soil minerals are not only colonized by specific bacterial communities but enable a succession of different bacterial communities. Our results thereby expand the concept of the mineralosphere and provide novel insights into mechanisms of community assembly in the soil ecosystem.

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Section: Discussionmentioning

confidence: 99%

Bacterial colonization of minerals in grassland soils is selective and highly dynamic

Vieira

Sikorski

Gebala

et al. 2019

Environmental Microbiology

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“…In this respect, the type of adsorbed cation has been found to be insignificant for wetting properties (Diehl et al, 2014). However, the abundance of cations and their effect on soil organic matter interfacial properties is physically and chemically not yet fully understood (Pronk et al, 2017). Recently it was found for numerous soils that there is a significant relationship between the wettability (expressed in the CA) and the surface C/O ratio (Woche et al, 2017).…”

Section: Theory For Isotope Fractionation For Subsurface Watermentioning

confidence: 99%

The Role of Matric Potential, Solid Interfacial Chemistry, and Wettability on Isotopic Equilibrium Fractionation

Gaj

Lamparter

Woche

et al. 2019

Vadose Zone Journal

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Core Ideas Matric potential controls the equilibrium fractionation factor between soil water and water vapor. Surface chemistry determined by X‐ray spectroscopy affects the equilibrium fractionation factor. A conceptual isotope retention characteristic approach is presented. Soil water stable isotopes are widely used for geo‐ and ecohydrological applications. However, the signature of the soil water isotopic composition in the environment depends on various factors. While recent work has shown matric potential effects on equilibrium fractionation, little work has examined other soil parameters concerning soil water energy status like the surface wettability, usually quantified in terms of contact angle. We simultaneously explored the role of matric potential, contact angle, and soil surface chemistry effects on the equilibrium fractionation factor during soil water evaporation. We present a simple laboratory experiment with four different soils of various textures. Subsamples of each texture class were treated with dichlorodimethylsilane to modify surface wetting properties. Additionally, we tested two natural soil samples to explore wettability effects. Samples were dried at temperatures between 40 and 550°C to produce chemically modified surface properties. All samples were spiked with water of known isotopic composition at different water contents. The isotopic signature was determined using the vapor‐bag equilibration method. The matric potential of each sample was measured with a soil water potential meter, the contact angle was determined with the sessile drop method, and the surface chemistry by X‐ray photoelectron spectroscopy. In addition to temperature and soil matric potential, the elemental composition has apparently some control on the equilibrium fractionation factor. Based on findings, we introduce a new soil water isotope retention characteristic approach to summarize how these factors (matric potential, contact angle, and soil surface chemistry) each control the equilibrium fractionation factor for 18O/16O and 2H/H. Corresponding retention curve approach parameters are promising to be applied in the future to predict soil water fractionation effects under natural and non‐stationary conditions.

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“…Therefore, the communities responded differently to the spiking of organic amendments Babin et al 2013Babin et al , 2014Pronk et al 2017). This suggests that expandable layer silicate minerals might therefore influence the effects of QAACs in soil not only by sequestration of the compound (Fig.…”

Section: Effects Of Qaacs On the Soil Microbial Communitymentioning

confidence: 99%

Quaternary ammonium compounds in soil: implications for antibiotic resistance development

Mulder

Siemens

Sentek

et al. 2017

Rev Environ Sci Biotechnol

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Quaternary ammonium compounds (QACs) are surface-active, antimicrobial, high production volume (HPV) chemicals with a broad application in agriculture. This review provides a comprehensive overview of (1) predicted and measured concentrations of QACs in soils including their analysis, (2) sequestration mechanisms in soils based on their physicochemical properties and chemical structure, and (3) implications of concentrations and fate of QACs in soils for the proliferation of antibiotic resistance in the environment. Predicted environmental concentrations (PEC) for QACs that are applied to soils with manure are in the order of 3.5 mg kg -1 . Based on literature data, the median PEC of QAC in sewage sludge amended soils is 25 lg kg -1 . The positively charged QACs are mainly sorbed to clay minerals. We propose that QACs might be sequestered in the interlayer regions of layered silicates in clayrich soils, reducing their acute toxicity, while increasing their persistence. The release of sequestered QACs from soil can still potentially maintain concentration levels that are sufficient to develop antibiotic resistance in the environment.

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Interaction of minerals, organic matter, and microorganisms during biogeochemical interface formation as shown by a series of artificial soil experiments

Cited by 80 publications

References 76 publications

Bacterial colonization of minerals in grassland soils is selective and highly dynamic

Bacterial colonization of minerals in grassland soils is selective and highly dynamic

The Role of Matric Potential, Solid Interfacial Chemistry, and Wettability on Isotopic Equilibrium Fractionation

Quaternary ammonium compounds in soil: implications for antibiotic resistance development

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