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Soil and rhizosphere microorganisms have the same Q(10) for respiration in a model system

Bååth, Erland LU and Wallander, Håkan LU (2003) In Global Change Biology 9(12). p.1788-1791
Abstract
We compared the Q10 relationship for root-derived respiration (including respiration due to the root, external mycorrhizal mycelium and rhizosphere microorganisms) with that of mainly external ectomycorrhizal mycelium and that of bulk soil microorganisms without any roots present. This was studied in a microcosm consisting of an ectomycorrhizal Pinus muricata seedling growing in a sandy soil, and where roots were allow to colonize one soil compartment, mycorrhizal mycelium another compartment, and the last compartment consisted of root- and mycorrhiza-free soil. The respiration rate in the bulk soil compartment was 30 times lower than in the root compartment, while that in the mycorrhizal compartment was six times lower. There were no... (More)
We compared the Q10 relationship for root-derived respiration (including respiration due to the root, external mycorrhizal mycelium and rhizosphere microorganisms) with that of mainly external ectomycorrhizal mycelium and that of bulk soil microorganisms without any roots present. This was studied in a microcosm consisting of an ectomycorrhizal Pinus muricata seedling growing in a sandy soil, and where roots were allow to colonize one soil compartment, mycorrhizal mycelium another compartment, and the last compartment consisted of root- and mycorrhiza-free soil. The respiration rate in the bulk soil compartment was 30 times lower than in the root compartment, while that in the mycorrhizal compartment was six times lower. There were no differences in Q10 (for 5-15°C) between the different compartments, indicating that there were no differences in the temperature relationship between root-associated and non-root-associated organisms. Thus, there are no indications that different Q10 values should be used for different soil organism, bulk soil or rhizosphere-associated microorganisms when modelling the effects of global climate change. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Global Change Biology
volume
9
issue
12
pages
1788 - 1791
publisher
Wiley-Blackwell
external identifiers
  • wos:000187274800008
  • scopus:0346462835
ISSN
1354-1013
DOI
10.1046/j.1365-2486.2003.00692.x
language
English
LU publication?
yes
id
8e5ee639-0a59-46a9-8804-bc842a220f05 (old id 132880)
date added to LUP
2007-06-29 09:14:11
date last changed
2018-01-28 03:21:37
@article{8e5ee639-0a59-46a9-8804-bc842a220f05,
  abstract     = {We compared the Q10 relationship for root-derived respiration (including respiration due to the root, external mycorrhizal mycelium and rhizosphere microorganisms) with that of mainly external ectomycorrhizal mycelium and that of bulk soil microorganisms without any roots present. This was studied in a microcosm consisting of an ectomycorrhizal Pinus muricata seedling growing in a sandy soil, and where roots were allow to colonize one soil compartment, mycorrhizal mycelium another compartment, and the last compartment consisted of root- and mycorrhiza-free soil. The respiration rate in the bulk soil compartment was 30 times lower than in the root compartment, while that in the mycorrhizal compartment was six times lower. There were no differences in Q10 (for 5-15°C) between the different compartments, indicating that there were no differences in the temperature relationship between root-associated and non-root-associated organisms. Thus, there are no indications that different Q10 values should be used for different soil organism, bulk soil or rhizosphere-associated microorganisms when modelling the effects of global climate change.},
  author       = {Bååth, Erland and Wallander, Håkan},
  issn         = {1354-1013},
  language     = {eng},
  number       = {12},
  pages        = {1788--1791},
  publisher    = {Wiley-Blackwell},
  series       = {Global Change Biology},
  title        = {Soil and rhizosphere microorganisms have the same Q(10) for respiration in a model system},
  url          = {http://dx.doi.org/10.1046/j.1365-2486.2003.00692.x},
  volume       = {9},
  year         = {2003},
}