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Aluminum complexation suppresses citrate uptake by acid forest soil microorganisms

Fransson, Ann-Mari LU ; Vinogradoff, S; Godbold, D L; van Hees, P A W and Jones, D L (2004) In Soil Biology & Biochemistry 36(2). p.353-357
Abstract
Organo-mineral interactions have been hypothesized to play a major role in biogeochemical cycling and pedogenesis in some forest soils. These processes are likely to be controlled to some extent by their persistence in soil, however, the factors regulating their bioavailability remain poorly understood. Therefore, we investigated the microbial utilization of C-14-labeled citrate in glass bead filled bioreactors containing a biofilm developed from an inoculum from an acid forest soil. The removal of Al-citrate in the bioreactors was negligible compared to the rate of citrate removal in the absence of Al. There was no evidence that in the short-term the microbial community adapted to increase the utilization of Al-citrate. In bioreactors... (More)
Organo-mineral interactions have been hypothesized to play a major role in biogeochemical cycling and pedogenesis in some forest soils. These processes are likely to be controlled to some extent by their persistence in soil, however, the factors regulating their bioavailability remain poorly understood. Therefore, we investigated the microbial utilization of C-14-labeled citrate in glass bead filled bioreactors containing a biofilm developed from an inoculum from an acid forest soil. The removal of Al-citrate in the bioreactors was negligible compared to the rate of citrate removal in the absence of Al. There was no evidence that in the short-term the microbial community adapted to increase the utilization of Al-citrate. In bioreactors filled with a Picea abies forest soil (Haplic Arenosol) the rates of citrate utilization were always slightly higher than that of At-citrate. We conclude that complexation of citrate by metals such as Al may have a significant effect on their role in soil biogeochemical cycles. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Soil Biology & Biochemistry
volume
36
issue
2
pages
353 - 357
publisher
Elsevier
external identifiers
  • wos:000189081500016
  • scopus:1042302218
ISSN
0038-0717
DOI
10.1016/j.soilbio.2003.09.015
language
English
LU publication?
yes
id
c5dd5c68-da34-4cd4-96fa-91163e8f19ed (old id 137533)
date added to LUP
2007-07-02 09:53:36
date last changed
2017-05-28 04:29:16
@article{c5dd5c68-da34-4cd4-96fa-91163e8f19ed,
  abstract     = {Organo-mineral interactions have been hypothesized to play a major role in biogeochemical cycling and pedogenesis in some forest soils. These processes are likely to be controlled to some extent by their persistence in soil, however, the factors regulating their bioavailability remain poorly understood. Therefore, we investigated the microbial utilization of C-14-labeled citrate in glass bead filled bioreactors containing a biofilm developed from an inoculum from an acid forest soil. The removal of Al-citrate in the bioreactors was negligible compared to the rate of citrate removal in the absence of Al. There was no evidence that in the short-term the microbial community adapted to increase the utilization of Al-citrate. In bioreactors filled with a Picea abies forest soil (Haplic Arenosol) the rates of citrate utilization were always slightly higher than that of At-citrate. We conclude that complexation of citrate by metals such as Al may have a significant effect on their role in soil biogeochemical cycles.},
  author       = {Fransson, Ann-Mari and Vinogradoff, S and Godbold, D L and van Hees, P A W and Jones, D L},
  issn         = {0038-0717},
  language     = {eng},
  number       = {2},
  pages        = {353--357},
  publisher    = {Elsevier},
  series       = {Soil Biology & Biochemistry},
  title        = {Aluminum complexation suppresses citrate uptake by acid forest soil microorganisms},
  url          = {http://dx.doi.org/10.1016/j.soilbio.2003.09.015},
  volume       = {36},
  year         = {2004},
}