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Porträttbild på Edith Hammer. Foto.

Edith Hammer

Universitetslektor

Porträttbild på Edith Hammer. Foto.

Symbiotic fungi that are essential for plant nutrient uptake investigated with NMP

Författare

  • Jan Pallon
  • Håkan Wallander
  • Edith Hammer
  • Natalia Arteaga
  • Vaida Auzelyte
  • Mikael Elfman
  • Per Kristiansson
  • Charlotta Nilsson
  • Pål Axel Olsson
  • Marie Wegdén

Summary, in English

The nuclear microprobe (NMP) technique using PIXE for elemental analysis and STIM on/off axis for parallel mass density normalization has proven successful to investigate possible interactions between minerals and ectomycorrhizal (EM) mycelia that form symbiotic associations with forest trees. The ability for the EM to make elements biologically available from minerals and soil were compared in field studies and in laboratory experiments, and molecular analysis (PCR-RFLP) was used to identify ectomycorrhizal species from the field samplings. EM rhizomorphs associated with apatite in laboratory systems and in mesh bags incubated in forest ecosystems contained larger amounts of Ca than similar rhizomorphs connected to acid-washed sand. EM mycelium produced in mesh bags had a capacity to mobilize P from apatite-amended sand and a high concentration of K in some rhizomorphs suggests that these fungi are good accumulators of K and may have a significant role in transporting K to trees.



Spores formed by arbuscular mycorrhizal (AM) fungi in laboratory cultures were compared with spores formed in saline soils in Tunisia in Northern Africa. We found lower concentrations of P and higher concentrations of Cl in the spores collected from the field than in the spores collected from laboratory cultures. For the case of laboratory cultures, the distribution of e.g. P and K was found to be clearly correlated.

Avdelning/ar

  • Fysiska institutionen
  • MEMEG
  • Biodiversity
  • Mikrobiologisk ekologi
  • Biodiversitet och bevarandevetenskap
  • Växtbiologi

Publiceringsår

2007

Språk

Engelska

Sidor

149-152

Publikation/Tidskrift/Serie

Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms

Volym

260

Issue

1

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Subatomic Physics
  • Ecology
  • Biological Sciences

Nyckelord

  • Rhizomorphs
  • Arbuscular mycorrhiza
  • PIXE
  • Spores
  • Ectomycorrhizal
  • STIM

Aktiv

Published

Forskningsgrupp

  • Nuclear Microprobe
  • Microbial Ecology
  • Biodiversity and Conservation Science
  • Plant Biology

ISBN/ISSN/Övrigt

  • ISSN: 0168-583X