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Temperature Effects on Recovery Time of Bacterial Growth After Rewetting Dry Soil.

Author:
  • Anita Maienza
  • Erland Bååth
Publishing year: 2014
Language: English
Pages: 818-821
Publication/Series: Microbial Ecology
Volume: 68
Issue: 4
Document type: Journal article
Publisher: Springer

Abstract english

The effect of temperature on the recovery of bacterial growth after rewetting dry soil was measured in a soil that responded with bacterial growth increasing immediately upon rewetting in a linear fashion (type (i) response sensu Meisner et al. (Soil Biol Biochem 66: 188-192, 2013)). The soil was air-dried for 4 days and then rewetted at different temperatures. Bacterial growth over time was then estimated using the leucine incorporation method. At 25 °C, the recovery of bacterial growth to levels of a wet control soil was rapid, within 6 h, while at 15 °C, recovery time increased to around 60 h, becoming more than a week at 5 °C. The temperature dependency of the recovery time was well modeled by a square root function. Thus, temperature will not only directly affect growth rates but also affect length of transition periods, like resuscitation after a drying event. The temperature during the rewetting event thus has to be taken into consideration when analyzing the microbial response dynamics.

Keywords

  • Biological Sciences

Other

Published
  • MICCS - Molecular Interactions Controlling soil Carbon Sequestration
  • ISSN: 1432-184X
Erland Bååth
E-mail: erland [dot] baath [at] biol [dot] lu [dot] se

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