Arbuscular mycorrhizal symbiosis and plant aquaporin expression

Establishment of the symbiosis between plants and mycorrhizal fungi is accompanied by structural changes in the plant root. During arbuscule formation fungal hyphae penetrate the root apoplast and install highly specialized interfaces for solute transport between plant and fungus. The periarbuscular...

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Bibliographic Details
Published in:Phytochemistry (Oxford) 2007, Vol.68 (1), p.122-129
Main Authors: Uehlein, Norbert, Fileschi, Kerstin, Eckert, Martin, Bienert, Gerd Patrick, Bertl, Adam, Kaldenhoff, Ralf
Format: Article
Language:English
Subjects:
Ammonia
Ammonium
Aquaporin
Aquaporins - genetics
Aquaporins - metabolism
Gene Expression Regulation, Plant - physiology
Medicago truncatula
Mycorrhiza
Mycorrhizae - chemistry
Mycorrhizae - metabolism
Nodulin
Periarbuscular membrane
Symbiosis - physiology
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Summary:Establishment of the symbiosis between plants and mycorrhizal fungi is accompanied by structural changes in the plant root. During arbuscule formation fungal hyphae penetrate the root apoplast and install highly specialized interfaces for solute transport between plant and fungus. The periarbuscular membrane surrounding arbuscular structures contains a high density of transport systems. Among these also aquaporins, which potentially can act as a low affinity transport system for ammonia or ammonium. Almost all land plants have developed a symbiosis with arbuscular mycorrhizal fungi. Establishment of the association is accompanied by structural changes in the plant root. During arbuscule formation fungal hyphae penetrate the root apoplast and install highly specialized interfaces for solute transport between plant and fungus. The periarbuscular membrane which is part of the plant plasma membrane surrounding arbuscular structures was shown to harbour a high density of different transport systems. Among these also expression of aquaporins was described, which potentially can act as a low affinity transport system for ammonia or ammonium. The present study provides data for expression, localization and function of plant aquaporins in the periarbuscular membrane of mycorrhizal Medicago truncatula plants.
ISSN:0031-9422
1873-3700
DOI:10.1016/j.phytochem.2006.09.033