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Temporal changes in the elemental composition of Rhizopogon rhizomorphs during colonization of patches with fresh organic matter or acid-washed sand

Wallander, Håkan LU and Pallon, Jan LU (2005) In Mycologia 97(2). p.295-303
Abstract
A laboratory experiment was performed to estimate the elemental composition of rhizomorphs of an ectomycorrhizal (EM) fungus growing in a patchy environment. Successive samples of Rhizopogon rhizomorphs, located adjacent to patches with organic matter or patches with acid-washed sand, were taken over a period of 45 d. The mass per unit area was analyzed with scanning transmission ion microscopy (STIM), and the elemental content of elements heavier than Mg were analyzed with particle induced X-ray emission (PIXE). Rhizomorphs associated with the organic matter on average were three times heavier per unit area than rhizomorphs associated with sand. The Ca concentration (mg g(-1)) increased in rhizomorphs adjacent to patches with sand, while... (More)
A laboratory experiment was performed to estimate the elemental composition of rhizomorphs of an ectomycorrhizal (EM) fungus growing in a patchy environment. Successive samples of Rhizopogon rhizomorphs, located adjacent to patches with organic matter or patches with acid-washed sand, were taken over a period of 45 d. The mass per unit area was analyzed with scanning transmission ion microscopy (STIM), and the elemental content of elements heavier than Mg were analyzed with particle induced X-ray emission (PIXE). Rhizomorphs associated with the organic matter on average were three times heavier per unit area than rhizomorphs associated with sand. The Ca concentration (mg g(-1)) increased in rhizomorphs adjacent to patches with sand, while it decreased in rhizomorphs adjacent to patches with organic matter. Fe concentration was higher in rhizomorphs adjacent to patches with sand. We concluded that the EM fungus responded to the organic matter by producing larger rhizomorphs, rather than increasing the concentration of elements in the rhizomorphs, to improve the transport of elements to the roots. The elemental composition of rhizomorphs varied considerably over time, and the accumulation of Ca in rhizomorphs in the sand-filled compartments could be the effect of acropetal flow of solutes from the plant roots toward the mycelial front. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Mycologia
volume
97
issue
2
pages
295 - 303
publisher
NYBG NEW YORK BOTANICAL GARDEN
external identifiers
  • wos:000230336600001
  • scopus:21744455040
ISSN
0027-5514
language
English
LU publication?
yes
id
60550932-845c-4f11-bc91-327da3e4e37a (old id 146767)
alternative location
http://www.mycologia.org/cgi/content/full/97/2/295
date added to LUP
2007-06-29 15:53:49
date last changed
2017-05-21 04:15:32
@article{60550932-845c-4f11-bc91-327da3e4e37a,
  abstract     = {A laboratory experiment was performed to estimate the elemental composition of rhizomorphs of an ectomycorrhizal (EM) fungus growing in a patchy environment. Successive samples of Rhizopogon rhizomorphs, located adjacent to patches with organic matter or patches with acid-washed sand, were taken over a period of 45 d. The mass per unit area was analyzed with scanning transmission ion microscopy (STIM), and the elemental content of elements heavier than Mg were analyzed with particle induced X-ray emission (PIXE). Rhizomorphs associated with the organic matter on average were three times heavier per unit area than rhizomorphs associated with sand. The Ca concentration (mg g(-1)) increased in rhizomorphs adjacent to patches with sand, while it decreased in rhizomorphs adjacent to patches with organic matter. Fe concentration was higher in rhizomorphs adjacent to patches with sand. We concluded that the EM fungus responded to the organic matter by producing larger rhizomorphs, rather than increasing the concentration of elements in the rhizomorphs, to improve the transport of elements to the roots. The elemental composition of rhizomorphs varied considerably over time, and the accumulation of Ca in rhizomorphs in the sand-filled compartments could be the effect of acropetal flow of solutes from the plant roots toward the mycelial front.},
  author       = {Wallander, Håkan and Pallon, Jan},
  issn         = {0027-5514},
  language     = {eng},
  number       = {2},
  pages        = {295--303},
  publisher    = {NYBG NEW YORK BOTANICAL GARDEN},
  series       = {Mycologia},
  title        = {Temporal changes in the elemental composition of Rhizopogon rhizomorphs during colonization of patches with fresh organic matter or acid-washed sand},
  volume       = {97},
  year         = {2005},
}