The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Carbon allocation in mycelia of arbuscular mycorrhizal fungi during colonisation of plant seedlings

På svenska

Author

Summary, in English

The direction of carbon (C) allocation in mycorrhizal mycelia is of fundamental importance to coexistence of individual plants. We therefore investigated the transfer of C from established plants to plant seedlings through fungal mycelia. C allocation by the arbuscular mycorrhizal (AM) fungus Glomus intraradices, from 'donor' plants to mycelia in soil and two different species of introduced 'receiver' seedlings, was investigated in a pot experiment using C-13 labelling and fatty acid analysis. After (CO2)-C-13 application to the shoots of Trifolium subterraneum or Plantago lanceolata, used as donor plants, T subterraneum and P. lanceolata receiver seedlings were introduced. Samples were collected 4-20 days after (CO2)-C-13 application and analysed regarding C-13 and the fatty acid 16:1 omega 5, the signature of AM fungi. C-13 transfer from T subterraneum donor plants was demonstrated by C-13 enrichment of the roots of the receiver seedlings, but not from the P. lanceolata donor plants. C-13 allocation to the neutral lipid fatty acid 16:1 omega 5 was only 1 ng in each receiver seedling, but 2 mu g of the fatty acid in whole soil. The results indicate that C allocation through mycelial networks is influenced by the donor plant species, but is not directed towards receiver seedlings to any higher degree than towards other directions. The importanice of the extraradical AM fungal mycelium as a C sink was demonstrated. (c) 2007 Elsevier Ltd. All rights reserved.

Publishing year

2007

Language

English

Pages

1450-1458

Publication/Series

Soil Biology & Biochemistry

Volume

39

Issue

7

Document type

Journal article

Publisher

Elsevier

Topic

  • Ecology

Keywords

  • C allocation
  • arbuscular mycorrhizal (AM) fungi
  • C-13
  • fatty acid
  • lipid
  • mycelial network

Status

Published

Research group

  • Microbial Ecology
  • Plant Biology

ISBN/ISSN/Other

  • ISSN: 0038-0717