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Title: Triose phosphate limitation in photosynthesis models reduces leaf photosynthesis and global terrestrial carbon storage

Abstract

Triose phosphate utilization (TPU)-limited photosynthesis occurs when carbon export from the Calvin-Benson cycle cannot keep pace with carbon inputs and processing. This condition is poorly constrained by observations but may become an increasingly important driver of global carbon cycling under future climate scenarios. However, the consequences of including or omitting TPU limitation in models have seldom been quantified. In this work, we assess the impact of changing the representation of TPU limitation on leaf- and global-scale processes. At the leaf scale, TPU limits photosynthesis at cold temperatures, high CO 2 concentrations, and high light levels. Consistent with leaf-scale results, global simulations using the Community Land Model version 4.5 illustrate that the standard representation of TPU limits carbon gain under present day and future conditions, most consistently at high latitudes. If the assumed TPU limitation is doubled, further restricting photosynthesis, terrestrial ecosystem carbon pools are reduced by 9 Pg by 2100 under a business-as-usual scenario. The impact of TPU limitation on global terrestrial carbon gain suggests that CO 2 concentrations may increase more than expected if models omit TPU limitation, and highlights the need to better understand when TPU limitation is important, including variation among different plant types and acclimation tomore » temperature and CO 2.« less

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [5]; ORCiD logo [6];  [1];  [1]
  1. National Center for Atmospheric Research, Boulder, CO (United States). Climate and Global Dynamics Division
  2. Texas Tech Univ., Lubbock, TX (United States). Dept. of Biological Sciences; Purdue Univ., West Lafayette, IN (United States). Dept. of Forestry and Natural Resources
  3. Cornell Univ., Ithaca, NY (United States). Dept. of Ecology and Evolutionary Biology
  4. Purdue Univ., West Lafayette, IN (United States). Dept. of Forestry and Natural Resources and Dept. of Biological Sciences
  5. Michigan State Univ., East Lansing, MI (United States). MSU AgBioResearch, Plant Resilience Inst. and Dept. of Biochemistry and Molecular Biology
  6. Brookhaven National Lab. (BNL), Upton, NY (United States). Environmental and Climate Sciences Dept.
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23); USDA; National Science Foundation (NSF)
OSTI Identifier:
1459720
Alternate Identifier(s):
OSTI ID: 1459167
Report Number(s):
BNL-206806-2018-JAAM
Journal ID: ISSN 1748-9326
Grant/Contract Number:
SC0012704; 2015-67003-23485; FC03-97ER62402/377 A010; SC0012972; 2015-67003-23489; 1049033; 1000026; FG02-91ER2002; FC03-97ER62402/A010
Resource Type:
Journal Article: Published Article
Journal Name:
Environmental Research Letters
Additional Journal Information:
Journal Name: Environmental Research Letters; Journal ID: ISSN 1748-9326
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Lombardozzi, Danica, Smith, Nicholas Gregory, Cheng, Susan J., Dukes, Jeffrey S., Sharkey, Thomas D., Rogers, Alistair, Fisher, Rosie, and Bonan, Gordon. Triose phosphate limitation in photosynthesis models reduces leaf photosynthesis and global terrestrial carbon storage. United States: N. p., 2018. Web. doi:10.1088/1748-9326/aacf68.
Lombardozzi, Danica, Smith, Nicholas Gregory, Cheng, Susan J., Dukes, Jeffrey S., Sharkey, Thomas D., Rogers, Alistair, Fisher, Rosie, & Bonan, Gordon. Triose phosphate limitation in photosynthesis models reduces leaf photosynthesis and global terrestrial carbon storage. United States. doi:10.1088/1748-9326/aacf68.
Lombardozzi, Danica, Smith, Nicholas Gregory, Cheng, Susan J., Dukes, Jeffrey S., Sharkey, Thomas D., Rogers, Alistair, Fisher, Rosie, and Bonan, Gordon. Wed . "Triose phosphate limitation in photosynthesis models reduces leaf photosynthesis and global terrestrial carbon storage". United States. doi:10.1088/1748-9326/aacf68.
@article{osti_1459720,
title = {Triose phosphate limitation in photosynthesis models reduces leaf photosynthesis and global terrestrial carbon storage},
author = {Lombardozzi, Danica and Smith, Nicholas Gregory and Cheng, Susan J. and Dukes, Jeffrey S. and Sharkey, Thomas D. and Rogers, Alistair and Fisher, Rosie and Bonan, Gordon},
abstractNote = {Triose phosphate utilization (TPU)-limited photosynthesis occurs when carbon export from the Calvin-Benson cycle cannot keep pace with carbon inputs and processing. This condition is poorly constrained by observations but may become an increasingly important driver of global carbon cycling under future climate scenarios. However, the consequences of including or omitting TPU limitation in models have seldom been quantified. In this work, we assess the impact of changing the representation of TPU limitation on leaf- and global-scale processes. At the leaf scale, TPU limits photosynthesis at cold temperatures, high CO2 concentrations, and high light levels. Consistent with leaf-scale results, global simulations using the Community Land Model version 4.5 illustrate that the standard representation of TPU limits carbon gain under present day and future conditions, most consistently at high latitudes. If the assumed TPU limitation is doubled, further restricting photosynthesis, terrestrial ecosystem carbon pools are reduced by 9 Pg by 2100 under a business-as-usual scenario. The impact of TPU limitation on global terrestrial carbon gain suggests that CO2 concentrations may increase more than expected if models omit TPU limitation, and highlights the need to better understand when TPU limitation is important, including variation among different plant types and acclimation to temperature and CO2.},
doi = {10.1088/1748-9326/aacf68},
journal = {Environmental Research Letters},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 27 00:00:00 EDT 2018},
month = {Wed Jun 27 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1088/1748-9326/aacf68

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