No evidence for triose phosphate limitation of light‐saturated leaf photosynthesis under current atmospheric CO 2 concentration
Abstract The triose phosphate utilization ( TPU ) rate has been identified as one of the processes that can limit terrestrial plant photosynthesis. However, we lack a robust quantitative assessment of TPU limitation of photosynthesis at the global scale. As a result, TPU , and its potential limitati...
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crwiley:10.1111/pce.13639 2024-10-13T14:05:30+00:00 No evidence for triose phosphate limitation of light‐saturated leaf photosynthesis under current atmospheric CO 2 concentration Kumarathunge, Dushan P. Medlyn, Belinda E. Drake, John E. Rogers, Alistair Tjoelker, Mark G. Brookhaven National Laboratory 2019 http://dx.doi.org/10.1111/pce.13639 https://onlinelibrary.wiley.com/doi/pdf/10.1111/pce.13639 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/pce.13639 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/pce.13639 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Plant, Cell & Environment volume 42, issue 12, page 3241-3252 ISSN 0140-7791 1365-3040 journal-article 2019 crwiley https://doi.org/10.1111/pce.13639 2024-09-19T04:20:18Z Abstract The triose phosphate utilization ( TPU ) rate has been identified as one of the processes that can limit terrestrial plant photosynthesis. However, we lack a robust quantitative assessment of TPU limitation of photosynthesis at the global scale. As a result, TPU , and its potential limitation of photosynthesis, is poorly represented in terrestrial biosphere models (TBMs). In this study, we utilized a global data set of photosynthetic CO 2 response curves representing 141 species from tropical rainforests to Arctic tundra. We quantified TPU by fitting the standard biochemical model of C 3 photosynthesis to measured photosynthetic CO 2 response curves and characterized its instantaneous temperature response. Our results demonstrate that TPU does not limit leaf photosynthesis at the current ambient atmospheric CO 2 concentration. Furthermore, our results showed that the light‐saturated photosynthetic rates of plants growing in cold environments are not more often limited by TPU than those of plants growing in warmer environments. In addition, our study showed that the instantaneous temperature response of TPU is distinct from temperature response of the maximum rate of Rubisco carboxylation. The new formulations of the temperature response of TPU derived in this study may prove useful in quantifying the biochemical limits to terrestrial plant photosynthesis and improve the representation of plant photosynthesis in TBMs. Article in Journal/Newspaper Arctic Tundra Wiley Online Library Arctic Plant, Cell & Environment 42 12 3241 3252 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The triose phosphate utilization ( TPU ) rate has been identified as one of the processes that can limit terrestrial plant photosynthesis. However, we lack a robust quantitative assessment of TPU limitation of photosynthesis at the global scale. As a result, TPU , and its potential limitation of photosynthesis, is poorly represented in terrestrial biosphere models (TBMs). In this study, we utilized a global data set of photosynthetic CO 2 response curves representing 141 species from tropical rainforests to Arctic tundra. We quantified TPU by fitting the standard biochemical model of C 3 photosynthesis to measured photosynthetic CO 2 response curves and characterized its instantaneous temperature response. Our results demonstrate that TPU does not limit leaf photosynthesis at the current ambient atmospheric CO 2 concentration. Furthermore, our results showed that the light‐saturated photosynthetic rates of plants growing in cold environments are not more often limited by TPU than those of plants growing in warmer environments. In addition, our study showed that the instantaneous temperature response of TPU is distinct from temperature response of the maximum rate of Rubisco carboxylation. The new formulations of the temperature response of TPU derived in this study may prove useful in quantifying the biochemical limits to terrestrial plant photosynthesis and improve the representation of plant photosynthesis in TBMs. |
author2 |
Brookhaven National Laboratory |
format |
Article in Journal/Newspaper |
author |
Kumarathunge, Dushan P. Medlyn, Belinda E. Drake, John E. Rogers, Alistair Tjoelker, Mark G. |
spellingShingle |
Kumarathunge, Dushan P. Medlyn, Belinda E. Drake, John E. Rogers, Alistair Tjoelker, Mark G. No evidence for triose phosphate limitation of light‐saturated leaf photosynthesis under current atmospheric CO 2 concentration |
author_facet |
Kumarathunge, Dushan P. Medlyn, Belinda E. Drake, John E. Rogers, Alistair Tjoelker, Mark G. |
author_sort |
Kumarathunge, Dushan P. |
title |
No evidence for triose phosphate limitation of light‐saturated leaf photosynthesis under current atmospheric CO 2 concentration |
title_short |
No evidence for triose phosphate limitation of light‐saturated leaf photosynthesis under current atmospheric CO 2 concentration |
title_full |
No evidence for triose phosphate limitation of light‐saturated leaf photosynthesis under current atmospheric CO 2 concentration |
title_fullStr |
No evidence for triose phosphate limitation of light‐saturated leaf photosynthesis under current atmospheric CO 2 concentration |
title_full_unstemmed |
No evidence for triose phosphate limitation of light‐saturated leaf photosynthesis under current atmospheric CO 2 concentration |
title_sort |
no evidence for triose phosphate limitation of light‐saturated leaf photosynthesis under current atmospheric co 2 concentration |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/pce.13639 https://onlinelibrary.wiley.com/doi/pdf/10.1111/pce.13639 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/pce.13639 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/pce.13639 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_source |
Plant, Cell & Environment volume 42, issue 12, page 3241-3252 ISSN 0140-7791 1365-3040 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/pce.13639 |
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Plant, Cell & Environment |
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42 |
container_issue |
12 |
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3241 |
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3252 |
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1812811588917264384 |