Data for: Inorganic versus organic phosphorus mobilization shapes the arbuscular mycorrhizal legacy on Fe-oxide surfaces

Description

This dataset contains the physicochemical measurements of goethite recovered from mineral bags in a 90-mesocosm pot experiment with Sorghum bicolor. Mineral bags containing goethite (unloaded, or loaded with orthophosphate [GOE-OP] or phytate [GOE-PA]) were buried for 12 weeks in mesocosms inoculated with one of nine arbuscular mycorrhizal fungal (AMF) strains or left non-mycorrhizal (AM0). Upon harvest, recovered mineral bags were analyzed for five surface-legacy descriptors: bulk organic carbon and nitrogen content, glomalin-related soil protein (GRSP), contact angle (wettability), zeta potential (surface charge), and effective hydrodynamic diameter (particle aggregation). Plant shoot and root phosphorus content are also reported. The dataset includes per-mesocosm values for all measured variables together with treatment metadata (AMF strain, P source, replicate), plus nine baseline (t0, pre-exposure) mineral bag characterizations per P source, used as a reference state prior to mesocosm incubation.

Steps to reproduce

Mineral bags (20 µm polyamide mesh) containing goethite-sand mixtures, unloaded or loaded with orthophosphate or phytate, were buried in 0.5-L pots planted with Sorghum bicolor and inoculated with one of nine AMF strains or left non-inoculated, for 12 weeks under controlled greenhouse conditions. Nine additional mineral bags per P source were characterized before mesocosm exposure (t0 baseline). At harvest, mineral bags were recovered, and the goethite phase was separated, dried, and analyzed for bulk C and N (elemental analyzer), GRSP (Bradford assay on SDS-extracted, NaOH-redissolved fraction), contact angle (sessile drop method), zeta potential and effective hydrodynamic diameter (dynamic light scattering). Full analytical detail is provided in the Materials and Methods of the associated article.

Institutions

• Leibniz University Hannover

  Lower Saxony, Hanover

Categories

Funders

• Bundesministerium für Forschung, Technologie und Raumfahrt

  North Rhine-Westphalia, Bonn

  Grant ID: Prodigy

Licence