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

Summary, in 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.

• Author: Anita Maienza; Erland Bååth
• Department/s: MEMEG
• Publishing year: 2014
• Language: English
• Pages: 818-821
• Publication/Series: Microbial Ecology
• Volume: 68
• Issue: 4
• Links: http://dx.doi.org/10.1007/s00248-014-0446-x
• Document type: Journal article
• Publisher: Springer
• Topic: Biological Sciences
• Status: Published
• ISBN/ISSN/Other: ISSN: 1432-184X