Intraspecific variation in nitrogen source utilisation by isolates of the ericoid mycorrhizal fungus Hymenoscyphus Ericae (Read) Korf and Kernan

J W G Cairney, N A Sawyer, J M Sharples, A A Meharg

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Abstract

Variation in the abilities of 35 isolates of the ericoid mycorrhizal fungal endophyte Hymenoscyplus ericae from two held sites to utilise inorganic and organic nitrogen sources in axenic culture has been investigated. While most isolates showed a preference for NH4+ as a sole nitrogen source, considerable variation was observed in the abilities of isolates to utilise amino acids and protein (BSA). In particular, large intraspecific variation was observed for glutamine and BSA utilisation, with some isolates thriving on these substrates while others produced little growth. The data suggest that individual isolates of H. ericae may vary considerably in their abilities to supply their host plants with nitrogen from different substrates in soil. (C) 2000 Elsevier Science Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1319-1322
Number of pages4
JournalSoil Biology and Biochemistry
Volume32
Publication statusPublished - 2000

Keywords

  • ericoid mycorrhiza
  • nitrogen utilisation
  • Hymenoscyphus ericae
  • ECTOMYCORRHIZAL FUNGI
  • ENDOPHYTE
  • BIOLOGY

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