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

Sergei G. Sokolovski, Andy A. Meharg, Frans J M Maathuis*

*Corresponding author for this work

Research output: Contribution to journalArticle

31 Citations (Scopus)

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 Vmax and Km 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.

Original languageEnglish
Pages (from-to)525-530
Number of pages6
JournalNew Phytologist
Volume155
Issue number3
DOIs
Publication statusPublished - Sep 2002

Keywords

  • Amino acid
  • Calluna vulgaris
  • Ericoid mycorrhiza
  • Hymenoscyphus ericae
  • Nitrogen
  • Plant nutrition

ASJC Scopus subject areas

  • Plant Science
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry

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