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Studies on the attractional effect of root exudates on hyphal growth of an arbuscular mycorrhizal fungus in a soil compartment-membrane system

Vierheilig, H.; Alt-Hug, M.; Engel-Streitwolf, R.; Mäder, P. and Wiemken, A. (1998) Studies on the attractional effect of root exudates on hyphal growth of an arbuscular mycorrhizal fungus in a soil compartment-membrane system. Plant and Soil, 203, pp. 137-144.

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Summary

The effects of tomato and bean rhizospheres on hyphal spreading of the arbuscular mycorrhizal (AM) fungus Glomus mosseae were studied using a soil compartment system in combination with hydrophobic polytetrafluorethylene (PTFE) membranes. Both the nylon screen and the PTFE membrane were freely permeable to hyphae but not to roots. Furthermore, the hydrophobic PTFE membrane seemed to be a barrier to the flux of soil solutions containing root exudates. The results show that water soluble exudates of tomato and bean roots greatly stimulate hyphal growth in the soil compartment system used. Moreover, water soluble root exudates of bean exert a clear attractional effect on AM hyphal growth.


EPrint Type:Journal paper
Keywords:attraction, Glomales, hyphal growth, root exudates, stimulation
Agrovoc keywords:
LanguageValueURI
EnglishattractionUNSPECIFIED
EnglishGlomalesUNSPECIFIED
Englishhyphal growthUNSPECIFIED
Englishroot exudatesUNSPECIFIED
EnglishstimulationUNSPECIFIED
Subjects: Soil > Soil quality > Soil biology
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil Sciences
Canada
Switzerland > Other organizations
ISSN:0032-079X
DOI:10.1023/A:1004329919005
Deposited By: Keck, Hannes
ID Code:26774
Deposited On:03 Sep 2014 13:14
Last Modified:03 Sep 2014 13:14
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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