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Adaptation of soil microbial communities to temperature: comparison of fungi and bacteria in a laboratory experiment

Barcenas-Moreno, Gema; Gomez-Brandon, Maria; Rousk, Johannes LU and Bååth, Erland LU (2009) In Global Change Biology 15(12). p.2950-2957
Abstract
Temperature not only has direct effects on microbial activity, but can also affect activity indirectly by changing the temperature dependency of the community. This would result in communities performing better over time in response to increased temperatures. We have for the first time studied the effect of soil temperature (5-50 degrees C) on the community adaptation of both bacterial (leucine incorporation) and fungal growth (acetate-in-ergosterol incorporation). Growth at different temperatures was estimated after about a month using a short-term assay to avoid confounding the effects of temperature on substrate availability. Before the experiment started, fungal and bacterial growth was optimal around 30 degrees C. Increasing soil... (More)
Temperature not only has direct effects on microbial activity, but can also affect activity indirectly by changing the temperature dependency of the community. This would result in communities performing better over time in response to increased temperatures. We have for the first time studied the effect of soil temperature (5-50 degrees C) on the community adaptation of both bacterial (leucine incorporation) and fungal growth (acetate-in-ergosterol incorporation). Growth at different temperatures was estimated after about a month using a short-term assay to avoid confounding the effects of temperature on substrate availability. Before the experiment started, fungal and bacterial growth was optimal around 30 degrees C. Increasing soil temperature above this resulted in an increase in the optimum for bacterial growth, correlated to soil temperature, with parallel shifts in the total response curve. Below the optimum, soil temperature had only minor effects, although lower temperatures selected for communities growing better at the lowest temperature. Fungi were affected in the same way as bacteria, with large shifts in temperature tolerance at soil temperatures above that of optimum for growth. A simplified technique, only comparing growth at two contrasting temperatures, gave similar results as using a complete temperature curve, allowing for large scale measurements also in field situations with small differences in temperature. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
temperature, soil, fungal growth, bacterial growth, community adaptation, temperature response
in
Global Change Biology
volume
15
issue
12
pages
2950 - 2957
publisher
Wiley-Blackwell
external identifiers
  • wos:000271710300012
  • scopus:74549150010
ISSN
1354-1013
DOI
10.1111/j.1365-2486.2009.01882.x
project
Effect of environmental factors on fungal and bacterial growth in soil
Microbial carbon-use efficiency
language
English
LU publication?
yes
id
c6f9c873-d242-4208-baa0-1e53ebeeea2b (old id 1519440)
date added to LUP
2009-12-28 12:42:50
date last changed
2017-11-19 03:38:56
@article{c6f9c873-d242-4208-baa0-1e53ebeeea2b,
  abstract     = {Temperature not only has direct effects on microbial activity, but can also affect activity indirectly by changing the temperature dependency of the community. This would result in communities performing better over time in response to increased temperatures. We have for the first time studied the effect of soil temperature (5-50 degrees C) on the community adaptation of both bacterial (leucine incorporation) and fungal growth (acetate-in-ergosterol incorporation). Growth at different temperatures was estimated after about a month using a short-term assay to avoid confounding the effects of temperature on substrate availability. Before the experiment started, fungal and bacterial growth was optimal around 30 degrees C. Increasing soil temperature above this resulted in an increase in the optimum for bacterial growth, correlated to soil temperature, with parallel shifts in the total response curve. Below the optimum, soil temperature had only minor effects, although lower temperatures selected for communities growing better at the lowest temperature. Fungi were affected in the same way as bacteria, with large shifts in temperature tolerance at soil temperatures above that of optimum for growth. A simplified technique, only comparing growth at two contrasting temperatures, gave similar results as using a complete temperature curve, allowing for large scale measurements also in field situations with small differences in temperature.},
  author       = {Barcenas-Moreno, Gema and Gomez-Brandon, Maria and Rousk, Johannes and Bååth, Erland},
  issn         = {1354-1013},
  keyword      = {temperature,soil,fungal growth,bacterial growth,community adaptation,temperature response},
  language     = {eng},
  number       = {12},
  pages        = {2950--2957},
  publisher    = {Wiley-Blackwell},
  series       = {Global Change Biology},
  title        = {Adaptation of soil microbial communities to temperature: comparison of fungi and bacteria in a laboratory experiment},
  url          = {http://dx.doi.org/10.1111/j.1365-2486.2009.01882.x},
  volume       = {15},
  year         = {2009},
}