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Elemental composition in vesicles of an arbuscular mycorrhizal fungus, as revealed by PIXE analysis.

Author:
  • Pål Axel Olsson
  • Edith Hammer
  • Jan Pallon
  • Ingrid van Aarle
  • Håkan Wallander
Publishing year: 2011
Language: English
Pages: 643-648
Publication/Series: Fungal Biology2010-01-01+01:00
Volume: 115
Issue: 7
Document type: Journal article
Publisher: Elsevier

Abstract english

We investigated element accumulation in vesicles of the arbuscular mycorrhizal (AM) fungus Glomus intraradices, extracted from the roots of inoculated leek plants. The elemental composition (elements heavier than Mg) was quantified using particle-induced X-ray emission (PIXE), in combination with scanning transmission ion microscopy (STIM). In vesicles, P was the most abundant of the elements analysed, followed by Ca, S, Si and K. We analysed 12 vesicles from two root systems and found that the variation between vesicles was particularly high for P and Si. The P content related positively to Si, Zn and K, while its relation to Cl fitted to a negative power function. Vesicle transects showed that P and K were present in central parts, while Ca was present mainly near the vesicle surfaces. The results showed that P is an important part (0.5% of the dry weight) of the vesicle content and that the distribution of some elements, within mycelia, may be strongly correlated.

Keywords

  • Biological Sciences
  • Subatomic Physics

Other

Published
  • Microbial Ecology
  • ISSN: 1878-6146
Edith Hammer
E-mail: edith [dot] hammer [at] biol [dot] lu [dot] se

Associate senior lecturer

MEMEG

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Research group

Microbial Ecology

Projects

MICCS

PhD students and postdocs

PhD students, main supervisor

Carlos Arellano

Postdocs

Kristin Aleklett