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Type: Journal article
Title: Colonisation by arbuscular mycorrhizal fungi changes the relationship between phosphorus uptake and membrane potential in leek (Allium porrum) seedlings
Author: Ayling, S.
Smith, S.
Smith, F.
Citation: Functional Plant Biology, 2001; 28(5):391-399
Publisher: CSIRO Publishing
Issue Date: 2001
ISSN: 1445-4408
Statement of
Sarah M. Ayling, Sally E. Smith and F. Andrew Smith
Abstract: The effect of colonisation by arbuscular mycorrhizal (AM) fungi on the relationship between phosphorus (P) uptake and root membrane electric potential difference (p.d.) was investigated in leek (Allium porrum L.). Plants were grown, with or without the AM fungus Scutellospora calospora (Nicolson and Gerdemann) Walker and Sanders, in soil. P uptake and root p.d. were correlated; plants with the highest P concentration in the shoot had the most negative p.d. This relationship was strong in non-mycorrhizal leeks (r² = 84–98%), but weaker in mycorrhizal leeks (r² = 55–64%), consistent with the idea that in mycorrhizal roots the fungal hyphae are the principal site of P uptake.
Keywords: Allium porrum; leek; membrane electric potential difference; phosphate; Scutellospora calospora
Rights: © CSIRO 2001
RMID: 0020010144
DOI: 10.1071/PP00151
Appears in Collections:Soil and Land Systems publications

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