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Growth response of the bacterial community to pH in soils differing in pH

Fernandez-Calvino, David and Bååth, Erland LU (2010) In FEMS Microbiology Ecology 73(1). p.149-156
Abstract
The effect of pH on the instantaneous growth of soil bacterial communities was studied in five soils with different pH (4.5-7.8) using leucine (Leu) and thymidine (TdR) incorporation. The pH dependency of bacterial growth was modelled using three different unimodal functions, and the pH(opt) for growth and the pH range in which growth was > 50% of the optimal growth were compared. Leu and TdR incorporation yielded very similar results. The best fits were obtained using a third-degree polynomial function and the cardinal pH model. However, a simple second-degree function was adequate in most cases, yielding very similar pH(opt) values to the other two models. Bacterial growth was highly influenced by pH, showing optimum growth at a pH... (More)
The effect of pH on the instantaneous growth of soil bacterial communities was studied in five soils with different pH (4.5-7.8) using leucine (Leu) and thymidine (TdR) incorporation. The pH dependency of bacterial growth was modelled using three different unimodal functions, and the pH(opt) for growth and the pH range in which growth was > 50% of the optimal growth were compared. Leu and TdR incorporation yielded very similar results. The best fits were obtained using a third-degree polynomial function and the cardinal pH model. However, a simple second-degree function was adequate in most cases, yielding very similar pH(opt) values to the other two models. Bacterial growth was highly influenced by pH, showing optimum growth at a pH related to the soil pH. The lowest pH(opt) was found in the most acidic soil and the highest pH(opt) in the soil with the highest pH. The pH(opt) for bacterial growth was close to the soil pH measured in water, but higher (0.7-2.1 units) than the pH measured with 0.1 M KCl. The pH range in which bacterial growth was > 50% of that at optimum was, on average, 1.7 units below and above the optimum pH. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
pH(max), pH(opt), pH(min), response curves, soil pH, bacterial community
in
FEMS Microbiology Ecology
volume
73
issue
1
pages
149 - 156
publisher
Elsevier
external identifiers
  • wos:000278394500012
  • scopus:77953202406
ISSN
1574-6941
DOI
10.1111/j.1574-6941.2010.00873.x
project
BECC
language
English
LU publication?
yes
id
57b8fcad-e5c6-42af-a01f-f121e5a37f87 (old id 1632226)
date added to LUP
2010-07-21 09:37:15
date last changed
2018-06-17 04:25:23
@article{57b8fcad-e5c6-42af-a01f-f121e5a37f87,
  abstract     = {The effect of pH on the instantaneous growth of soil bacterial communities was studied in five soils with different pH (4.5-7.8) using leucine (Leu) and thymidine (TdR) incorporation. The pH dependency of bacterial growth was modelled using three different unimodal functions, and the pH(opt) for growth and the pH range in which growth was > 50% of the optimal growth were compared. Leu and TdR incorporation yielded very similar results. The best fits were obtained using a third-degree polynomial function and the cardinal pH model. However, a simple second-degree function was adequate in most cases, yielding very similar pH(opt) values to the other two models. Bacterial growth was highly influenced by pH, showing optimum growth at a pH related to the soil pH. The lowest pH(opt) was found in the most acidic soil and the highest pH(opt) in the soil with the highest pH. The pH(opt) for bacterial growth was close to the soil pH measured in water, but higher (0.7-2.1 units) than the pH measured with 0.1 M KCl. The pH range in which bacterial growth was > 50% of that at optimum was, on average, 1.7 units below and above the optimum pH.},
  author       = {Fernandez-Calvino, David and Bååth, Erland},
  issn         = {1574-6941},
  keyword      = {pH(max),pH(opt),pH(min),response curves,soil pH,bacterial community},
  language     = {eng},
  number       = {1},
  pages        = {149--156},
  publisher    = {Elsevier},
  series       = {FEMS Microbiology Ecology},
  title        = {Growth response of the bacterial community to pH in soils differing in pH},
  url          = {http://dx.doi.org/10.1111/j.1574-6941.2010.00873.x},
  volume       = {73},
  year         = {2010},
}