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Calluna vulgaris root cells show increased capacity for amino acid uptake when colonized with the mycorrhizal fungus Hymenoscyphus ericae

Sokolovski, S.G., Meharg, A.A. and Maathuis, F.J.M. (2002) Calluna vulgaris root cells show increased capacity for amino acid uptake when colonized with the mycorrhizal fungus Hymenoscyphus ericae. New Phytologist, 155 (3). pp. 525-530. ISSN 0028-646X

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Abstract

• Ericoid mycorrhizas are believed to improve N nutrition of many ericaceous plant species that typically occur in habitats with impoverished nutrient status, by releasing amino acids from organic N forms. Despite the ubiquity of mycorrhizal formation the mechanisms and regulation of nutrient transport in mycorrhizal associations are poorly understood.

• We used an electrophysiological approach to study how amino acid transport characteristics of Calluna vulgaris were affected by colonization with the ericoid mycorrhiza fungus Hymenoscyphus ericae .

• Both the V max and K m parameters of amino acid uptake were affected by fungal colonization in a manner consistent with an increased availability of amino acid to the plant.

• The ecophysiological significance of altered amino acid transport in colonized root cells of C. vulgaris is discussed.

Item Type: Article
Copyright, Publisher and Additional Information: Open access copy available from the journal web site.
Keywords: amino acid, Calluna vulgaris, Hymenoscyphus ericae, ericoid mycorrhiza, nitrogen, plant nutrition
Academic Units: The University of York > Biology (York)
Depositing User: Open Access From Journal
Date Deposited: 22 Dec 2008 17:30
Last Modified: 22 Dec 2008 17:32
Published Version: http://dx.doi.org/10.1046/j.1469-8137.2002.00485.x
Status: Published
Publisher: Wiley-Blackwell
Refereed: Yes
Identification Number: 10.1046/j.1469-8137.2002.00485.x
URI: http://eprints.whiterose.ac.uk/id/eprint/5101

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