Microbial key players involved in P turnover differ in artificial soil mixtures depending on clay mineral composition

Autor: Irina Tanuwidjaja, Cordula Vogel, Gisle Vestergaard, Susanne Kublik, Mirna Mrkonjić Fuka, Stefanie Schulz, Ingrid Kögel-Knabner, Michael Schloter, Anne Schöler, Geertje J. Pronk
Jazyk: angličtina
Rok vydání: 2021
Předmět:
0301 basic medicine
Inorganic pyrophosphatase
Exopolyphosphatase
Microorganism
Soil Science
chemistry.chemical_element
Bacterial P turnover
Biology
engineering.material
Artificial Soils
Bacterial P Turnover
Metagenomics
Inorganic Pyrophosphatase
complex mixtures
03 medical and health sciences
Soil
Nutrient
Microbial ecology
Environmental Microbiology
Ecology
Evolution
Behavior and Systematics
Soil Microbiology
Artificial soils
Minerals
Ecology
Bacteria
Phosphorus
Artificial soils
Bacterial P turnover
Metagenomics
Exopolyphosphatase
Inorganic pyrophosphatase
04 agricultural and veterinary sciences
ddc
030104 developmental biology
chemistry
Environmental chemistry
Illite
Soil water
040103 agronomy & agriculture
engineering
0401 agriculture
forestry
and fisheries
Clay
Composition (visual arts)
Clay minerals
Zdroj: Microb. Ecol. 81, 897–907 (2021)
Microbial Ecology
Popis: Nutrient turnover in soils is strongly driven by soil properties, including clay mineral composition. One main nutrient is phosphorus (P), which is known to be easily immobilized in soil. Therefore, the specific surface characteristics of clay minerals might substantially influence P availability in soil and thus the microbial strategies for accessing P pools. We used a metagenomic approach to analyze the microbial potential to access P after 842 days of incubation in artificial soils with a clay mineral composition of either non-expandable illite (IL) or expandable montmorillonite (MT), which differ in their surface characteristics like soil surface area and surface charge. Our data indicate that microorganisms of the two soils developed different strategies to overcome P depletion, resulting in similar total P concentrations. Genes predicted to encode inorganic pyrophosphatase (ppa), exopolyphosphatase (ppx), and the pstSCAB transport system were higher in MT, suggesting effective P uptake and the use of internal poly-P stores. Genes predicted to encode enzymes involved in organic P turnover like alkaline phosphatases (phoA, phoD) and glycerophosphoryl diester phosphodiesterase were detected in both soils in comparable numbers. In addition, Po concentrations did not differ significantly. Most identified genes were assigned to microbial lineages generally abundant in agricultural fields, but some were assigned to lineages known to include oligotrophic specialists, such as Bacillaceae and Microchaetaceae.
Databáze: OpenAIRE
Externí odkaz: