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Repeated drying and rewetting cycles accelerate bacterial growth recovery after rewetting

Leizeaga, Ainara LU ; Meisner, Annelein LU ; Rousk, Johannes LU and Bååth, Erland LU (2022) In Biology and Fertility of Soils 58(4). p.365-374
Abstract

Two patterns of bacterial growth response upon drying and rewetting (DRW) of soils have previously been identified. Bacterial growth can either start increasing immediately after rewetting in a linear fashion (“type 1” response) or start increasing exponentially after a lag period (“type 2” response). The effect of repeated DRW cycles was studied in three soils with different response patterns after a single DRW cycle (“type 1”, “type 2” with a short lag period and “type 2” with a long lag period). The soils were exposed to seven DRW cycles, and respiration and bacterial growth were monitored after 1, 2, 3, 5, and 7 cycles. Exposure to repeated DRW shifted the bacterial growth response from a “type 2” to a “type 1” pattern, resulting in... (More)

Two patterns of bacterial growth response upon drying and rewetting (DRW) of soils have previously been identified. Bacterial growth can either start increasing immediately after rewetting in a linear fashion (“type 1” response) or start increasing exponentially after a lag period (“type 2” response). The effect of repeated DRW cycles was studied in three soils with different response patterns after a single DRW cycle (“type 1”, “type 2” with a short lag period and “type 2” with a long lag period). The soils were exposed to seven DRW cycles, and respiration and bacterial growth were monitored after 1, 2, 3, 5, and 7 cycles. Exposure to repeated DRW shifted the bacterial growth response from a “type 2” to a “type 1” pattern, resulting in an accelerated growth recovery to a pre-disturbance growth rate. Bacterial growth in soils that initially had a “type 1” response also tended to recover faster after each subsequent DRW cycle. The respiration patterns after DRW also indicated the same transition from a “type 2” to a “type 1” pattern. Our results show that exposure to repeated DRW cycles will shape the bacterial response to future DRW cycles, which might be mediated by a shift in species composition, a physiological adjustment, evolutionary changes, or a combination of the three.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Bacterial growth, Birch effect, Drying-rewetting cycles, Moisture, Respiration, Soil microorganisms
in
Biology and Fertility of Soils
volume
58
issue
4
pages
365 - 374
publisher
Springer
external identifiers
  • scopus:85124257958
ISSN
0178-2762
DOI
10.1007/s00374-022-01623-2
language
English
LU publication?
yes
additional info
Funding Information: Open access funding provided by Lund University. This work was supported by grants from the Royal Physiographic Society of Lund, the Swedish Research Council Formas [grant no 2018–01315], the Knut and Alice Wallenberg Foundation [grant no KAW 2017.0171], an international career grant from the Swedish Research Council [VR, Grant No. 330–2014-6430] and Marie Sklodowska Curie Actions [Cofund Project INCA600398]. Publisher Copyright: © 2022, The Author(s).
id
310b5302-f9c8-4a58-9a92-a2172b78c4ba
date added to LUP
2022-04-22 08:48:38
date last changed
2024-05-09 14:14:55
@article{310b5302-f9c8-4a58-9a92-a2172b78c4ba,
  abstract     = {{<p>Two patterns of bacterial growth response upon drying and rewetting (DRW) of soils have previously been identified. Bacterial growth can either start increasing immediately after rewetting in a linear fashion (“type 1” response) or start increasing exponentially after a lag period (“type 2” response). The effect of repeated DRW cycles was studied in three soils with different response patterns after a single DRW cycle (“type 1”, “type 2” with a short lag period and “type 2” with a long lag period). The soils were exposed to seven DRW cycles, and respiration and bacterial growth were monitored after 1, 2, 3, 5, and 7 cycles. Exposure to repeated DRW shifted the bacterial growth response from a “type 2” to a “type 1” pattern, resulting in an accelerated growth recovery to a pre-disturbance growth rate. Bacterial growth in soils that initially had a “type 1” response also tended to recover faster after each subsequent DRW cycle. The respiration patterns after DRW also indicated the same transition from a “type 2” to a “type 1” pattern. Our results show that exposure to repeated DRW cycles will shape the bacterial response to future DRW cycles, which might be mediated by a shift in species composition, a physiological adjustment, evolutionary changes, or a combination of the three.</p>}},
  author       = {{Leizeaga, Ainara and Meisner, Annelein and Rousk, Johannes and Bååth, Erland}},
  issn         = {{0178-2762}},
  keywords     = {{Bacterial growth; Birch effect; Drying-rewetting cycles; Moisture; Respiration; Soil microorganisms}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{365--374}},
  publisher    = {{Springer}},
  series       = {{Biology and Fertility of Soils}},
  title        = {{Repeated drying and rewetting cycles accelerate bacterial growth recovery after rewetting}},
  url          = {{http://dx.doi.org/10.1007/s00374-022-01623-2}},
  doi          = {{10.1007/s00374-022-01623-2}},
  volume       = {{58}},
  year         = {{2022}},
}