interface between the arbuscular mycorrhizal fungus Glomus intraradices and root cells of Panax quinquefolius: a Paris-type mycorrhizal association

Two major types of arbucular mycorrhizal associations, the Arum-type and the Paris-type, have been identified based on morphological features. Although the Paris-type is the most common, it is the Arum-type that has been most intensively studied in terms of structure/function because of its prevalen...

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Bibliographic Details
Published in:Mycologia 2002-07, Vol.94 (4), p.587-595
Main Authors: Armstrong, Lara, Peterson, R. Larry
Format: Article
Language:English
Subjects:
actin
actin filaments
Antibodies
arbuscules
Cell walls
cellulose
Cytoplasm
Cytoskeleton
Ecology
endosymbionts
fungal anatomy
Glomus intraradices
host plants
Hyphae
hyphal coils
interfacial matrix
L cells
Microfilaments
Microtubules
mycorrhizal fungi
Mycorrhizas
Panax quinquefolius
pectins
plant anatomy
Plant roots
roots
vesicular arbuscular mycorrhizae
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Summary:Two major types of arbucular mycorrhizal associations, the Arum-type and the Paris-type, have been identified based on morphological features. Although the Paris-type is the most common, it is the Arum-type that has been most intensively studied in terms of structure/function because of its prevalence in agronomically important plant species. In this study, the interface between the host cell cytoplasm and intracellular hyphae (extensive hyphal coils and arbusculate coils), which typify the Paris-type mycorrhiza, was studied. Using immunofluorescence techniques combined with laser scanning confocal microscopy, dramatic changes in the cytoskeleton in colonized cells were observed. Changes in the positioning of both host cell microtubules and actin filaments occurred in colonized plant cells. Both microtubules and actin filaments were associated with the hyphal coils and the arbusculate coils. An interfacial matrix, of host origin, was demonstrated between hyphal coils and arbusculate coils using various affinity techniques. It formed an apoplastic compartment consisting of cellulose and pectins between the fungus and host cell cytoplasm. There was less labelling adjacent to the fine branches of arbusculate coils compared to the hyphal coils. These observations show some similarities to those seen with Arum-type mycorrhizas.
ISSN:0027-5514
1557-2536
DOI:10.1080/15572536.2003.11833187