Plants control soil gas exchanges possibly via mucilage

• Published in: Journal of plant nutrition and soil science Vol. 184; no. 3; pp. 320 - 328
• Main Authors: Haupenthal, Adrian, Brax, Mathilde, Bentz, Jonas, Jungkunst, Hermann F., Schützenmeister, Klaus, Kroener, Eva
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01.06.2021
• Subjects: Beads; Bulk density; Diffusion coefficient; diffusivity; Drying; Electron microscopy; Exudates; Filaments; gas diffusion coefficient; Gas exchange; Gaseous diffusion; geometry; glass; Glass beads; Hydrogels; liquid bridges; Microscopy; Mucilage; mucilages; plant nutrition; pore connectivity; pore scale simulation; Porosity; respiration; rhizodeposition; Rhizosphere; Scanning electron microscopy; soil air; Soil gas; Soil gases; soil pore system; Soil porosity; Soils; Tortuosity; Vapor phases

Background: Gaseous matter exchanges in soil are determined by the connectivity of the pore system which is easily clogged by fresh root exudates. However, it remains unclear how a hydrogel (e.g., mucilage) affects soil pore tortuosity and gas diffusion properties when drying. Aims: The aim of this...