Changes in root exudate induced respiration reveal a novel mechanism through which drought affects ecosystem C cyclingCitation formats

  • External authors:
  • Alex Williams
  • Fiona Stringer
  • Robert Willcocks
  • Rosie McEwing
  • Holly Langridge
  • Angela Straathof

Standard

Changes in root exudate induced respiration reveal a novel mechanism through which drought affects ecosystem C cycling. / De Vries, Franciska; Williams, Alex; Stringer, Fiona; Willcocks, Robert; McEwing, Rosie; Langridge, Holly; Straathof, Angela.

In: New Phytologist, 2019.

Research output: Contribution to journalArticlepeer-review

Harvard

De Vries, F, Williams, A, Stringer, F, Willcocks, R, McEwing, R, Langridge, H & Straathof, A 2019, 'Changes in root exudate induced respiration reveal a novel mechanism through which drought affects ecosystem C cycling', New Phytologist. https://doi.org/10.1111/nph.16001

APA

De Vries, F., Williams, A., Stringer, F., Willcocks, R., McEwing, R., Langridge, H., & Straathof, A. (2019). Changes in root exudate induced respiration reveal a novel mechanism through which drought affects ecosystem C cycling. New Phytologist. https://doi.org/10.1111/nph.16001

Vancouver

Author

De Vries, Franciska ; Williams, Alex ; Stringer, Fiona ; Willcocks, Robert ; McEwing, Rosie ; Langridge, Holly ; Straathof, Angela. / Changes in root exudate induced respiration reveal a novel mechanism through which drought affects ecosystem C cycling. In: New Phytologist. 2019.

Bibtex

@article{6b3b1982670a4e4c841f24d560329df4,
title = "Changes in root exudate induced respiration reveal a novel mechanism through which drought affects ecosystem C cycling",
abstract = "1) Root exudates play an important role in ecosystem response to climate change, but the functional consequences of drought-induced changes in the quality of root exudates are unknown. Here, we addressed this knowledge gap in a unique experimental approach.2) We subjected two common grassland species that differ widely in their growth strategies and root systems, the grass Holcus lanatus and the forb Rumex acetosa, to two weeks of drought. We collected root exudates and soils at the end of the drought and after two weeks of recovery, and re-added all root exudates to all soils in a fully reciprocal set up to measure root exudate induced respiration.3) We found that soil treatment was unimportant for determining root exudate induced respiration. In contrast, root exudates collected from plants that had experienced drought clearly triggered more soil respiration than exudates from undroughted plants. Importantly, this increased respiration compensated for the lower rates of root exudation in droughted plants.4) Our findings reveal a novel mechanism through which drought can continue to affect ecosystem carbon cycling, and a potential plant strategy to facilitate regrowth through stimulating microbial activity. These findings have important implications for understanding plant and ecosystem response to drought.",
keywords = "root exudate, climate change, soil fungi, soil bacteria, root traits, drought, carbon, Plant-soil interactions",
author = "{De Vries}, Franciska and Alex Williams and Fiona Stringer and Robert Willcocks and Rosie McEwing and Holly Langridge and Angela Straathof",
year = "2019",
doi = "10.1111/nph.16001",
language = "English",
journal = "New Phytologist (Print)",
issn = "1469-8137",
publisher = "John Wiley & Sons Ltd",

}

RIS

TY - JOUR

T1 - Changes in root exudate induced respiration reveal a novel mechanism through which drought affects ecosystem C cycling

AU - De Vries, Franciska

AU - Williams, Alex

AU - Stringer, Fiona

AU - Willcocks, Robert

AU - McEwing, Rosie

AU - Langridge, Holly

AU - Straathof, Angela

PY - 2019

Y1 - 2019

N2 - 1) Root exudates play an important role in ecosystem response to climate change, but the functional consequences of drought-induced changes in the quality of root exudates are unknown. Here, we addressed this knowledge gap in a unique experimental approach.2) We subjected two common grassland species that differ widely in their growth strategies and root systems, the grass Holcus lanatus and the forb Rumex acetosa, to two weeks of drought. We collected root exudates and soils at the end of the drought and after two weeks of recovery, and re-added all root exudates to all soils in a fully reciprocal set up to measure root exudate induced respiration.3) We found that soil treatment was unimportant for determining root exudate induced respiration. In contrast, root exudates collected from plants that had experienced drought clearly triggered more soil respiration than exudates from undroughted plants. Importantly, this increased respiration compensated for the lower rates of root exudation in droughted plants.4) Our findings reveal a novel mechanism through which drought can continue to affect ecosystem carbon cycling, and a potential plant strategy to facilitate regrowth through stimulating microbial activity. These findings have important implications for understanding plant and ecosystem response to drought.

AB - 1) Root exudates play an important role in ecosystem response to climate change, but the functional consequences of drought-induced changes in the quality of root exudates are unknown. Here, we addressed this knowledge gap in a unique experimental approach.2) We subjected two common grassland species that differ widely in their growth strategies and root systems, the grass Holcus lanatus and the forb Rumex acetosa, to two weeks of drought. We collected root exudates and soils at the end of the drought and after two weeks of recovery, and re-added all root exudates to all soils in a fully reciprocal set up to measure root exudate induced respiration.3) We found that soil treatment was unimportant for determining root exudate induced respiration. In contrast, root exudates collected from plants that had experienced drought clearly triggered more soil respiration than exudates from undroughted plants. Importantly, this increased respiration compensated for the lower rates of root exudation in droughted plants.4) Our findings reveal a novel mechanism through which drought can continue to affect ecosystem carbon cycling, and a potential plant strategy to facilitate regrowth through stimulating microbial activity. These findings have important implications for understanding plant and ecosystem response to drought.

KW - root exudate

KW - climate change

KW - soil fungi

KW - soil bacteria

KW - root traits

KW - drought

KW - carbon

KW - Plant-soil interactions

U2 - 10.1111/nph.16001

DO - 10.1111/nph.16001

M3 - Article

JO - New Phytologist (Print)

JF - New Phytologist (Print)

SN - 1469-8137

ER -