Photosynthetic capacity in middle-aged larch and spruce acclimates independently to experimental warming and elevated CO2

Mirindi Eric Dusenge; Jeffrey M. Warren; Peter B. Reich; Eric J. Ward; Bridget K. Murphy; Artur Stefanski; Raimundo Bermudez; Marisol Cruz; David A. McLennan; Anthony W. King; Rebecca A. Montgomery; Paul J. Hanson; Danielle A. Way

doi:10.1111/pce.15068

Photosynthetic capacity in middle-aged larch and spruce acclimates independently to experimental warming and elevated CO₂

Mirindi Eric Dusenge, Jeffrey M. Warren, Peter B. Reich, Eric J. Ward, Bridget K. Murphy, Artur Stefanski, Raimundo Bermudez, Marisol Cruz, David A. McLennan, Anthony W. King, Rebecca A. Montgomery, Paul J. Hanson, Danielle A. Way

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Photosynthetic acclimation to both warming and elevated CO₂ of boreal trees remains a key uncertainty in modelling the response of photosynthesis to future climates. We investigated the impact of increased growth temperature and elevated CO₂ on photosynthetic capacity (V_cmax and J_max) in mature trees of two North American boreal conifers, tamarack and black spruce. We show that V_cmax and J_max at a standard temperature of 25°C did not change with warming, while V_cmax and J_max at their thermal optima (T_opt) and growth temperature (T_g) increased. Moreover, V_cmax and J_max at either 25°C, T_opt or T_g decreased with elevated CO₂. The J_max/V_cmax ratio decreased with warming when assessed at both T_opt and T_g but did not significantly vary at 25°C. The J_max/V_cmax increased with elevated CO₂ at either reference temperature. We found no significant interaction between warming and elevated CO₂ on all traits. If this lack of interaction between warming and elevated CO₂ on the V_cmax, J_max and J_max/V_cmax ratio is a general trend, it would have significant implications for improving photosynthesis representation in vegetation models. However, future research is required to investigate the widespread nature of this response in a larger number of species and biomes.

Original language	English
Pages (from-to)	4886-4902
Number of pages	17
Journal	Plant Cell and Environment
Volume	47
Issue number	12
DOIs	https://doi.org/10.1111/pce.15068
State	Published - Dec 2024

Funding

Research was sponsored by the Biological and Environmental Research Program in the Office of Science, U.S. Department of Energy managed by UT- Battelle, LLC, for the U.S. Department of Energy under contract DEAC05-00OR22725. M.E.D., J.M.W., E.J.W., D.A.M., A.W.K. and P.J.H. were supported under this contract. E.J.W. also acknowledges support from USGS Climate Research and Development Program. P.B.R., A.S., R.B., and R.A.M acknowledge funding support by the U.S. NSF Biological Integration Institutes grant DBI-2021898. D.A.W. acknowledges funding from the NSERC Discovery and Strategic programs (RGPIN/04677-2019 and STPGP/521445-2018), the Research School of Biology at the Australian National University, and the U.S. Department of Energy contract No. DE-SC0012704 to Brookhaven National Laboratory. Notice: This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). The DOI link for the data set used in this paper can be accessed at https://doi.org/10.25581/spruce.056/1455138 (Dusenge, Ward, et al., 2020) and https://doi.org/10.6084/m9.figshare.23685984.v2. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Research was sponsored by the Biological and Environmental Research Program in the Office of Science, U.S. Department of Energy managed by UT‐ Battelle, LLC, for the U.S. Department of Energy under contract DEAC05‐00OR22725. M.E.D., J.M.W., E.J.W., D.A.M., A.W.K. and P.J.H. were supported under this contract. E.J.W. also acknowledges support from USGS Climate Research and Development Program. P.B.R., A.S., R.B., and R.A.M acknowledge funding support by the U.S. NSF Biological Integration Institutes grant DBI‐2021898. D.A.W. acknowledges funding from the NSERC Discovery and Strategic programs (RGPIN/04677‐2019 and STPGP/521445‐2018), the Research School of Biology at the Australian National University, and the U.S. Department of Energy contract No. DE‐SC0012704 to Brookhaven National Laboratory. Notice: This manuscript has been authored by UT‐Battelle, LLC, under contract DE‐AC05‐00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid‐up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). The DOI link for the data set used in this paper can be accessed at https://doi.org/10.25581/spruce.056/1455138 (Dusenge, Ward, et al., 2020) and https://doi.org/10.6084/m9.figshare.23685984.v2 . Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Keywords

SPRUCE project
acclimation
black spruce
boreal conifers
tamarack
temperature

Access to Document

10.1111/pce.15068

Cite this

Dusenge, M. E., Warren, J. M., Reich, P. B., Ward, E. J., Murphy, B. K., Stefanski, A., Bermudez, R., Cruz, M., McLennan, D. A., King, A. W., Montgomery, R. A., Hanson, P. J., & Way, D. A. (2024). Photosynthetic capacity in middle-aged larch and spruce acclimates independently to experimental warming and elevated CO₂. Plant Cell and Environment, 47(12), 4886-4902. https://doi.org/10.1111/pce.15068

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title = "Photosynthetic capacity in middle-aged larch and spruce acclimates independently to experimental warming and elevated CO2",

abstract = "Photosynthetic acclimation to both warming and elevated CO2 of boreal trees remains a key uncertainty in modelling the response of photosynthesis to future climates. We investigated the impact of increased growth temperature and elevated CO2 on photosynthetic capacity (Vcmax and Jmax) in mature trees of two North American boreal conifers, tamarack and black spruce. We show that Vcmax and Jmax at a standard temperature of 25°C did not change with warming, while Vcmax and Jmax at their thermal optima (Topt) and growth temperature (Tg) increased. Moreover, Vcmax and Jmax at either 25°C, Topt or Tg decreased with elevated CO2. The Jmax/Vcmax ratio decreased with warming when assessed at both Topt and Tg but did not significantly vary at 25°C. The Jmax/Vcmax increased with elevated CO2 at either reference temperature. We found no significant interaction between warming and elevated CO2 on all traits. If this lack of interaction between warming and elevated CO2 on the Vcmax, Jmax and Jmax/Vcmax ratio is a general trend, it would have significant implications for improving photosynthesis representation in vegetation models. However, future research is required to investigate the widespread nature of this response in a larger number of species and biomes.",

keywords = "SPRUCE project, acclimation, black spruce, boreal conifers, tamarack, temperature",

author = "Dusenge, \{Mirindi Eric\} and Warren, \{Jeffrey M.\} and Reich, \{Peter B.\} and Ward, \{Eric J.\} and Murphy, \{Bridget K.\} and Artur Stefanski and Raimundo Bermudez and Marisol Cruz and McLennan, \{David A.\} and King, \{Anthony W.\} and Montgomery, \{Rebecca A.\} and Hanson, \{Paul J.\} and Way, \{Danielle A.\}",

note = "Publisher Copyright: {\textcopyright} 2024 The Author(s). Plant, Cell \& Environment published by John Wiley \& Sons Ltd.",

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Dusenge, ME, Warren, JM, Reich, PB, Ward, EJ, Murphy, BK, Stefanski, A, Bermudez, R, Cruz, M, McLennan, DA, King, AW, Montgomery, RA, Hanson, PJ & Way, DA 2024, 'Photosynthetic capacity in middle-aged larch and spruce acclimates independently to experimental warming and elevated CO₂', Plant Cell and Environment, vol. 47, no. 12, pp. 4886-4902. https://doi.org/10.1111/pce.15068

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AU - Dusenge, Mirindi Eric

AU - Warren, Jeffrey M.

AU - Reich, Peter B.

AU - Ward, Eric J.

AU - Murphy, Bridget K.

AU - Stefanski, Artur

AU - Bermudez, Raimundo

AU - Cruz, Marisol

AU - McLennan, David A.

AU - King, Anthony W.

AU - Montgomery, Rebecca A.

AU - Hanson, Paul J.

AU - Way, Danielle A.

PY - 2024/12

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N2 - Photosynthetic acclimation to both warming and elevated CO2 of boreal trees remains a key uncertainty in modelling the response of photosynthesis to future climates. We investigated the impact of increased growth temperature and elevated CO2 on photosynthetic capacity (Vcmax and Jmax) in mature trees of two North American boreal conifers, tamarack and black spruce. We show that Vcmax and Jmax at a standard temperature of 25°C did not change with warming, while Vcmax and Jmax at their thermal optima (Topt) and growth temperature (Tg) increased. Moreover, Vcmax and Jmax at either 25°C, Topt or Tg decreased with elevated CO2. The Jmax/Vcmax ratio decreased with warming when assessed at both Topt and Tg but did not significantly vary at 25°C. The Jmax/Vcmax increased with elevated CO2 at either reference temperature. We found no significant interaction between warming and elevated CO2 on all traits. If this lack of interaction between warming and elevated CO2 on the Vcmax, Jmax and Jmax/Vcmax ratio is a general trend, it would have significant implications for improving photosynthesis representation in vegetation models. However, future research is required to investigate the widespread nature of this response in a larger number of species and biomes.

AB - Photosynthetic acclimation to both warming and elevated CO2 of boreal trees remains a key uncertainty in modelling the response of photosynthesis to future climates. We investigated the impact of increased growth temperature and elevated CO2 on photosynthetic capacity (Vcmax and Jmax) in mature trees of two North American boreal conifers, tamarack and black spruce. We show that Vcmax and Jmax at a standard temperature of 25°C did not change with warming, while Vcmax and Jmax at their thermal optima (Topt) and growth temperature (Tg) increased. Moreover, Vcmax and Jmax at either 25°C, Topt or Tg decreased with elevated CO2. The Jmax/Vcmax ratio decreased with warming when assessed at both Topt and Tg but did not significantly vary at 25°C. The Jmax/Vcmax increased with elevated CO2 at either reference temperature. We found no significant interaction between warming and elevated CO2 on all traits. If this lack of interaction between warming and elevated CO2 on the Vcmax, Jmax and Jmax/Vcmax ratio is a general trend, it would have significant implications for improving photosynthesis representation in vegetation models. However, future research is required to investigate the widespread nature of this response in a larger number of species and biomes.

KW - SPRUCE project

KW - acclimation

KW - black spruce

KW - boreal conifers

KW - tamarack

KW - temperature

UR - https://www.scopus.com/pages/publications/85200255781

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DO - 10.1111/pce.15068

M3 - Article

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AN - SCOPUS:85200255781

SN - 0140-7791

VL - 47

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JO - Plant Cell and Environment

JF - Plant Cell and Environment

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