Javascript is not activated in your browser. This website needs javascript activated to work properly.
Du är här

Effect of drying and rewetting on bacterial growth rates in soil.

Publiceringsår: 2008
Språk: Engelska
Sidor: 400-407
Publikation/Tidskrift/Serie: FEMS Microbiology Ecology
Volym: 65
Nummer: 3
Dokumenttyp: Artikel
Förlag: Blackwell Publishing Ltd.


The effect of soil moisture on bacterial growth was investigated, and the effects of rewetting were compared with glucose addition because both treatments increase substrate availability. Bacterial growth was estimated as thymidine and leucine incorporation, and was compared with respiration. Low growth rates were found in air-dried soil, increasing rapidly to high stable values in moist soils. Respiration and bacterial growth at different soil moisture contents were correlated. Rewetting air-dried soil resulted in a linear increase in bacterial growth with time, reaching the levels in moist soil (10 times higher) after about 7 h. Respiration rates increased within 1 h to a level >10 times higher than that in moist soil. After the initial flush, there was a gradual decrease in respiration rate, while bacterial growth increased to levels twice that of moist soil 24 h after rewetting, and decreased to levels similar to those in moist soil after 2 days. Adding glucose resulted in no positive effect on bacterial growth during the first 9 h, despite resulting in more than five times higher respiration. This indicated that the initial increase in bacterial growth after rewetting was not due to increased substrate availability.



  • Biology and Life Sciences
  • leucine incorporation
  • thymidine incorporation
  • bacterial growth
  • rewetting
  • soil moisture
  • respiration


  • Responses of soil microbes to drought and rewetting
  • Microbial Ecology
  • ISSN: 0168-6496

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen