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Phosphorus Availability Influences Elemental Uptake in the Mycorrhizal Fungus Glomus intraradices, as Revealed by PIXE Analysis.

Publiceringsår: 2008
Språk: Engelska
Sidor: 4144-4148
Publikation/Tidskrift/Serie: Applied and environmental microbiology
Volym: 74
Nummer: 13
Dokumenttyp: Artikel
Förlag: American Society for Microbiology

Sammanfattning

We investigated element accumulation in the arbuscular mycorrhizal fungus Glomus intraradices. Fungal spores and mycelium growing in monoxenic cultures were analyzed. The elemental composition was quantified using particle-induced X-ray emission (PIXE) in combination with scanning transmission ion microscopy. In the spores, Ca and Fe were mainly associated with the spore wall; while P and K showed patchy distributions and their concentrations were correlated. Excess of P in the hyphal growth medium increased the P and Si concentration in spores, and increased the K:Ca ratio in spores. Increased P availability decreased the concentration of Zn and Mn in spores. We conclude that the availability of P influences the uptake and accumulation of several elements in spores. It is demonstrated that PIXE analysis is a powerful tool for quantitative analysis of elemental accumulation in fungal mycelia.

Disputation

Nyckelord

  • Biology and Life Sciences

Övriga

Published
Yes
  • Microbial Ecology
  • ISSN: 1098-5336

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