No evidence for triose phosphate limitation of light-saturated leaf photosynthesis under current atmospheric CO2 concentration
The triose phosphate utilization rate (TPU) has been identified as is 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: | , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
U.K., Wiley-Blackwell Publishing
2019
|
Subjects: | |
Online Access: | https://doi.org/10.1111/pce.13639 http://hdl.handle.net/1959.7/uws:52509 |
id |
ftunivwestsyd:oai:researchdirect.westernsydney.edu.au:uws_52509 |
---|---|
record_format |
openpolar |
spelling |
ftunivwestsyd:oai:researchdirect.westernsydney.edu.au:uws_52509 2023-05-15T15:08:05+02:00 No evidence for triose phosphate limitation of light-saturated leaf photosynthesis under current atmospheric CO2 concentration Kumarathunge, Dushan (S32842) Medlyn, Belinda E. (R18040) Drake, John E. (R17039) Rogers, Alistair Tjoelker, Mark G. (R16688) Hawkesbury Institute for the Environment (Host institution) 2019 print 12 https://doi.org/10.1111/pce.13639 http://hdl.handle.net/1959.7/uws:52509 eng eng U.K., Wiley-Blackwell Publishing Plant, Cell and Environment--0140-7791--1365-3040 Vol. 42 Issue. 12 pp: 3241-3252 XXXXXX - Unknown photosynthesis biosphere temperature electron transport triose phosphate atmospheric carbon dioxide journal article Text 2019 ftunivwestsyd https://doi.org/10.1111/pce.13639 2020-12-05T18:36:29Z The triose phosphate utilization rate (TPU) has been identified as is 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 CO2 response curves representing 141 species from tropical rainforests to Arctic tundra. We quantified TPU by fitting the standard biochemical model of C3 photosynthesis to measured photosynthetic CO2 response curves, and characterised its instantaneous temperature response. Our results demonstrate that TPU does not limit leaf photosynthesis at the current ambient atmospheric CO2 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 University of Western Sydney (UWS): Research Direct Arctic Plant, Cell & Environment 42 12 3241 3252 |
institution |
Open Polar |
collection |
University of Western Sydney (UWS): Research Direct |
op_collection_id |
ftunivwestsyd |
language |
English |
topic |
XXXXXX - Unknown photosynthesis biosphere temperature electron transport triose phosphate atmospheric carbon dioxide |
spellingShingle |
XXXXXX - Unknown photosynthesis biosphere temperature electron transport triose phosphate atmospheric carbon dioxide Kumarathunge, Dushan (S32842) Medlyn, Belinda E. (R18040) Drake, John E. (R17039) Rogers, Alistair Tjoelker, Mark G. (R16688) No evidence for triose phosphate limitation of light-saturated leaf photosynthesis under current atmospheric CO2 concentration |
topic_facet |
XXXXXX - Unknown photosynthesis biosphere temperature electron transport triose phosphate atmospheric carbon dioxide |
description |
The triose phosphate utilization rate (TPU) has been identified as is 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 CO2 response curves representing 141 species from tropical rainforests to Arctic tundra. We quantified TPU by fitting the standard biochemical model of C3 photosynthesis to measured photosynthetic CO2 response curves, and characterised its instantaneous temperature response. Our results demonstrate that TPU does not limit leaf photosynthesis at the current ambient atmospheric CO2 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 |
Hawkesbury Institute for the Environment (Host institution) |
format |
Article in Journal/Newspaper |
author |
Kumarathunge, Dushan (S32842) Medlyn, Belinda E. (R18040) Drake, John E. (R17039) Rogers, Alistair Tjoelker, Mark G. (R16688) |
author_facet |
Kumarathunge, Dushan (S32842) Medlyn, Belinda E. (R18040) Drake, John E. (R17039) Rogers, Alistair Tjoelker, Mark G. (R16688) |
author_sort |
Kumarathunge, Dushan (S32842) |
title |
No evidence for triose phosphate limitation of light-saturated leaf photosynthesis under current atmospheric CO2 concentration |
title_short |
No evidence for triose phosphate limitation of light-saturated leaf photosynthesis under current atmospheric CO2 concentration |
title_full |
No evidence for triose phosphate limitation of light-saturated leaf photosynthesis under current atmospheric CO2 concentration |
title_fullStr |
No evidence for triose phosphate limitation of light-saturated leaf photosynthesis under current atmospheric CO2 concentration |
title_full_unstemmed |
No evidence for triose phosphate limitation of light-saturated leaf photosynthesis under current atmospheric CO2 concentration |
title_sort |
no evidence for triose phosphate limitation of light-saturated leaf photosynthesis under current atmospheric co2 concentration |
publisher |
U.K., Wiley-Blackwell Publishing |
publishDate |
2019 |
url |
https://doi.org/10.1111/pce.13639 http://hdl.handle.net/1959.7/uws:52509 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_relation |
Plant, Cell and Environment--0140-7791--1365-3040 Vol. 42 Issue. 12 pp: 3241-3252 |
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_ |
1766339514122371072 |