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Boundaries between soil compartments formed by microporous hydrophobic membranes (GORE-TEX®) can be crossed by vesicular-arbuscular mycorrhizal fungi but not by ions in the soil solution

Mäder, P.; Vierheilig, H.; Alt, M. and Wiemken, A. (1993) Boundaries between soil compartments formed by microporous hydrophobic membranes (GORE-TEX®) can be crossed by vesicular-arbuscular mycorrhizal fungi but not by ions in the soil solution. Plant and Soil, 152, pp. 201-206.

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Summary

Various container systems have been described in which soil regions available to hyphae only are separated from the mycorrhizal root region by 30–60 μm mesh screens to study nutrient exchange between plants and fungi in the mycorrhizal symbiosis. The screens designed up to now prevent penetration by roots but allow easy passage of fungal hyphae as well as diffusion or mass flow of water and nutrient solutions. We tested hydrophobic microporous polytetrafluorethylene (PTFE) membranes (GORE-TEXR) with 5 to 15 μm diameter pores in an attempt to obtain a better seal between compartments and to prevent uncontrolled nutrient transport by diffusion or mass flow. We found that these membranes completely prevented diffusion or mass flow of ions between two soil compartments but could be penetrated easily by the vesicular-arbuscular mycorrhizal fungus Glomus mosseae, as demonstrated by the rapid colonization of soybean roots (Glycine max L.) from an inoculum across the membranes.


EPrint Type:Journal paper
Keywords:hydrophobic mambrane, hyphae, nutrient transport, vesicular arbuscular mycorrhiza, Department of Soil Scineces
Agrovoc keywords:
Language
Value
URI
English
hydrophobic mambrane
UNSPECIFIED
English
hyphae
UNSPECIFIED
English
nutrient transport
UNSPECIFIED
English
vesicular arbuscular mycorrhiza
UNSPECIFIED
Subjects: Soil > Soil quality > Soil biology
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil
Switzerland > Other organizations
ISSN:0032-079X
DOI:10.1007/BF00029089
Deposited By: Mäder, Paul
ID Code:26785
Deposited On:26 Sep 2014 10:45
Last Modified:13 Jan 2021 13:11
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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