Embolism recovery strategies and nocturnal water loss across species influenced by biogeographic origin

Melanie J.B. Zeppel, William R.L. Anderegg, Henry D. Adams, Patrick Hudson, Alicia Cook, Rizwana Rumman, Derek Eamus, David T. Tissue, Stephen Wilson Pacala

Research output: Contribution to journalArticle

Abstract

Drought-induced tree mortality is expected to increase in future climates with the potential for significant consequences to global carbon, water, and energy cycles. Xylem embolism can accumulate to lethal levels during drought, but species that can refill embolized xylem and recover hydraulic function may be able to avoid mortality. Yet the potential controls of embolism recovery, including cross-biome patterns and plant traits such as nonstructural carbohydrates (NSCs), hydraulic traits, and nocturnal stomatal conductance, are unknown. We exposed eight plant species, originating from mesic (tropical and temperate) and semi-arid environments, to drought under ambient and elevated CO 2 levels, and assessed recovery from embolism following rewatering. We found a positive association between xylem recovery and NSCs, and, surprisingly, a positive relationship between xylem recovery and nocturnal stomatal conductance. Arid-zone species exhibited greater embolism recovery than mesic zone species. Our results indicate that nighttime stomatal conductance often assumed to be a wasteful use of water, may in fact be a key part of plant drought responses, and contribute to drought survival. Findings suggested distinct biome-specific responses that partially depended on species climate-of-origin precipitation or aridity index, which allowed some species to recover from xylem embolism. These findings provide improved understanding required to predict the response of diverse plant communities to drought. Our results provide a framework for predicting future vegetation shifts in response to climate change.

Original languageEnglish (US)
Pages (from-to)5348-5361
Number of pages14
JournalEcology and Evolution
Volume9
Issue number9
DOIs
StatePublished - May 1 2019

Fingerprint

embolism
xylem
drought
stomatal conductance
water
dry environmental conditions
biome
carbohydrate
fluid mechanics
carbohydrates
hydraulics
climate
mortality
ecosystems
tree mortality
arid environment
aridity
arid zones
plant anatomy
loss

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Nature and Landscape Conservation

Keywords

  • carbohydrate starvation
  • drought-induced mortality
  • embolism recovery
  • embolism refilling
  • hydraulic failure
  • nocturnal stomatal conductance
  • nonstructural carbohydrates
  • xylem embolism

Cite this

Zeppel, Melanie J.B. ; Anderegg, William R.L. ; Adams, Henry D. ; Hudson, Patrick ; Cook, Alicia ; Rumman, Rizwana ; Eamus, Derek ; Tissue, David T. ; Pacala, Stephen Wilson. / Embolism recovery strategies and nocturnal water loss across species influenced by biogeographic origin. In: Ecology and Evolution. 2019 ; Vol. 9, No. 9. pp. 5348-5361.
@article{9ddff5e8db974479ba1079e0cfe72fe9,
title = "Embolism recovery strategies and nocturnal water loss across species influenced by biogeographic origin",
abstract = "Drought-induced tree mortality is expected to increase in future climates with the potential for significant consequences to global carbon, water, and energy cycles. Xylem embolism can accumulate to lethal levels during drought, but species that can refill embolized xylem and recover hydraulic function may be able to avoid mortality. Yet the potential controls of embolism recovery, including cross-biome patterns and plant traits such as nonstructural carbohydrates (NSCs), hydraulic traits, and nocturnal stomatal conductance, are unknown. We exposed eight plant species, originating from mesic (tropical and temperate) and semi-arid environments, to drought under ambient and elevated CO 2 levels, and assessed recovery from embolism following rewatering. We found a positive association between xylem recovery and NSCs, and, surprisingly, a positive relationship between xylem recovery and nocturnal stomatal conductance. Arid-zone species exhibited greater embolism recovery than mesic zone species. Our results indicate that nighttime stomatal conductance often assumed to be a wasteful use of water, may in fact be a key part of plant drought responses, and contribute to drought survival. Findings suggested distinct biome-specific responses that partially depended on species climate-of-origin precipitation or aridity index, which allowed some species to recover from xylem embolism. These findings provide improved understanding required to predict the response of diverse plant communities to drought. Our results provide a framework for predicting future vegetation shifts in response to climate change.",
keywords = "carbohydrate starvation, drought-induced mortality, embolism recovery, embolism refilling, hydraulic failure, nocturnal stomatal conductance, nonstructural carbohydrates, xylem embolism",
author = "Zeppel, {Melanie J.B.} and Anderegg, {William R.L.} and Adams, {Henry D.} and Patrick Hudson and Alicia Cook and Rizwana Rumman and Derek Eamus and Tissue, {David T.} and Pacala, {Stephen Wilson}",
year = "2019",
month = "5",
day = "1",
doi = "10.1002/ece3.5126",
language = "English (US)",
volume = "9",
pages = "5348--5361",
journal = "Ecology and Evolution",
issn = "2045-7758",
publisher = "John Wiley and Sons Ltd",
number = "9",

}

Zeppel, MJB, Anderegg, WRL, Adams, HD, Hudson, P, Cook, A, Rumman, R, Eamus, D, Tissue, DT & Pacala, SW 2019, 'Embolism recovery strategies and nocturnal water loss across species influenced by biogeographic origin', Ecology and Evolution, vol. 9, no. 9, pp. 5348-5361. https://doi.org/10.1002/ece3.5126

Embolism recovery strategies and nocturnal water loss across species influenced by biogeographic origin. / Zeppel, Melanie J.B.; Anderegg, William R.L.; Adams, Henry D.; Hudson, Patrick; Cook, Alicia; Rumman, Rizwana; Eamus, Derek; Tissue, David T.; Pacala, Stephen Wilson.

In: Ecology and Evolution, Vol. 9, No. 9, 01.05.2019, p. 5348-5361.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Embolism recovery strategies and nocturnal water loss across species influenced by biogeographic origin

AU - Zeppel, Melanie J.B.

AU - Anderegg, William R.L.

AU - Adams, Henry D.

AU - Hudson, Patrick

AU - Cook, Alicia

AU - Rumman, Rizwana

AU - Eamus, Derek

AU - Tissue, David T.

AU - Pacala, Stephen Wilson

PY - 2019/5/1

Y1 - 2019/5/1

N2 - Drought-induced tree mortality is expected to increase in future climates with the potential for significant consequences to global carbon, water, and energy cycles. Xylem embolism can accumulate to lethal levels during drought, but species that can refill embolized xylem and recover hydraulic function may be able to avoid mortality. Yet the potential controls of embolism recovery, including cross-biome patterns and plant traits such as nonstructural carbohydrates (NSCs), hydraulic traits, and nocturnal stomatal conductance, are unknown. We exposed eight plant species, originating from mesic (tropical and temperate) and semi-arid environments, to drought under ambient and elevated CO 2 levels, and assessed recovery from embolism following rewatering. We found a positive association between xylem recovery and NSCs, and, surprisingly, a positive relationship between xylem recovery and nocturnal stomatal conductance. Arid-zone species exhibited greater embolism recovery than mesic zone species. Our results indicate that nighttime stomatal conductance often assumed to be a wasteful use of water, may in fact be a key part of plant drought responses, and contribute to drought survival. Findings suggested distinct biome-specific responses that partially depended on species climate-of-origin precipitation or aridity index, which allowed some species to recover from xylem embolism. These findings provide improved understanding required to predict the response of diverse plant communities to drought. Our results provide a framework for predicting future vegetation shifts in response to climate change.

AB - Drought-induced tree mortality is expected to increase in future climates with the potential for significant consequences to global carbon, water, and energy cycles. Xylem embolism can accumulate to lethal levels during drought, but species that can refill embolized xylem and recover hydraulic function may be able to avoid mortality. Yet the potential controls of embolism recovery, including cross-biome patterns and plant traits such as nonstructural carbohydrates (NSCs), hydraulic traits, and nocturnal stomatal conductance, are unknown. We exposed eight plant species, originating from mesic (tropical and temperate) and semi-arid environments, to drought under ambient and elevated CO 2 levels, and assessed recovery from embolism following rewatering. We found a positive association between xylem recovery and NSCs, and, surprisingly, a positive relationship between xylem recovery and nocturnal stomatal conductance. Arid-zone species exhibited greater embolism recovery than mesic zone species. Our results indicate that nighttime stomatal conductance often assumed to be a wasteful use of water, may in fact be a key part of plant drought responses, and contribute to drought survival. Findings suggested distinct biome-specific responses that partially depended on species climate-of-origin precipitation or aridity index, which allowed some species to recover from xylem embolism. These findings provide improved understanding required to predict the response of diverse plant communities to drought. Our results provide a framework for predicting future vegetation shifts in response to climate change.

KW - carbohydrate starvation

KW - drought-induced mortality

KW - embolism recovery

KW - embolism refilling

KW - hydraulic failure

KW - nocturnal stomatal conductance

KW - nonstructural carbohydrates

KW - xylem embolism

UR - http://www.scopus.com/inward/record.url?scp=85065498248&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065498248&partnerID=8YFLogxK

U2 - 10.1002/ece3.5126

DO - 10.1002/ece3.5126

M3 - Article

VL - 9

SP - 5348

EP - 5361

JO - Ecology and Evolution

JF - Ecology and Evolution

SN - 2045-7758

IS - 9

ER -