No evidence for triose phosphate limitation of light saturated leaf photosynthesis under current atmospheric CO 2 concentration
The triose phosphate utilization rate ( TPU ) 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 pho...
Published in: | Plant, Cell & Environment |
---|---|
Main Authors: | , , , , |
Language: | unknown |
Published: |
2023
|
Subjects: | |
Online Access: | http://www.osti.gov/servlets/purl/1557708 https://www.osti.gov/biblio/1557708 https://doi.org/10.1111/pce.13639 |
id |
ftosti:oai:osti.gov:1557708 |
---|---|
record_format |
openpolar |
spelling |
ftosti:oai:osti.gov:1557708 2023-07-30T04:01:51+02:00 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. 2023-02-23 application/pdf http://www.osti.gov/servlets/purl/1557708 https://www.osti.gov/biblio/1557708 https://doi.org/10.1111/pce.13639 unknown http://www.osti.gov/servlets/purl/1557708 https://www.osti.gov/biblio/1557708 https://doi.org/10.1111/pce.13639 doi:10.1111/pce.13639 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.1111/pce.13639 2023-07-11T09:36:19Z The triose phosphate utilization rate ( TPU ) 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 utilised a global dataset of photosynthetic CO 2 response curves representing 141 species from tropical rainforests to Arctic tundra. Here, we quantified TPU by fitting the standard biochemical model of C 3 photosynthesis to measured photosynthetic CO 2 response curves, and characterised 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 TBM. Other/Unknown Material Arctic Tundra SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic Plant, Cell & Environment 42 12 3241 3252 |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES 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 |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
The triose phosphate utilization rate ( TPU ) 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 utilised a global dataset of photosynthetic CO 2 response curves representing 141 species from tropical rainforests to Arctic tundra. Here, we quantified TPU by fitting the standard biochemical model of C 3 photosynthesis to measured photosynthetic CO 2 response curves, and characterised 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 TBM. |
author |
Kumarathunge, Dushan P. Medlyn, Belinda E. Drake, John E. Rogers, Alistair Tjoelker, Mark G. |
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 |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1557708 https://www.osti.gov/biblio/1557708 https://doi.org/10.1111/pce.13639 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_relation |
http://www.osti.gov/servlets/purl/1557708 https://www.osti.gov/biblio/1557708 https://doi.org/10.1111/pce.13639 doi:10.1111/pce.13639 |
op_doi |
https://doi.org/10.1111/pce.13639 |
container_title |
Plant, Cell & Environment |
container_volume |
42 |
container_issue |
12 |
container_start_page |
3241 |
op_container_end_page |
3252 |
_version_ |
1772812588935020544 |