Temperature responses of photosynthetic capacity parameters were not affected by foliar nitrogen content in mature Pinus sylvestris
A key weakness in current Earth System Models is the representation of thermal acclimation of photosynthesis in response to changes in growth temperatures. Previous studies in boreal and temperate ecosystems have shown leaf‐scale photosynthetic capacity parameters, the maximum rates of carboxylation...
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crwiley:10.1111/ppl.12605 2024-06-23T07:55:38+00:00 Temperature responses of photosynthetic capacity parameters were not affected by foliar nitrogen content in mature Pinus sylvestris Tarvainen, Lasse Lutz, Martina Räntfors, Mats Näsholm, Torgny Wallin, Göran Vetenskapsrådet Knut och Alice Wallenbergs Stiftelse Sveriges Lantbruksuniversitet VINNOVA Svenska Forskningsrådet Formas Kempestiftelserna 2017 http://dx.doi.org/10.1111/ppl.12605 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fppl.12605 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ppl.12605 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Physiologia Plantarum volume 162, issue 3, page 370-378 ISSN 0031-9317 1399-3054 journal-article 2017 crwiley https://doi.org/10.1111/ppl.12605 2024-06-11T04:41:58Z A key weakness in current Earth System Models is the representation of thermal acclimation of photosynthesis in response to changes in growth temperatures. Previous studies in boreal and temperate ecosystems have shown leaf‐scale photosynthetic capacity parameters, the maximum rates of carboxylation ( V cmax ) and electron transport ( J max ), to be positively correlated with foliar nitrogen (N) content at a given reference temperature. It is also known that V cmax and J max exhibit temperature optima that are affected by various environmental factors and, further, that N partitioning among the foliar photosynthetic pools is affected by N availability. However, despite the strong recent anthropogenic influence on atmospheric temperatures and N deposition to forests, little is known about the role of foliar N contents in controlling the photosynthetic temperature responses. In this study, we investigated the temperature dependencies of V cmax and J max in 1‐year‐old needles of mature boreal Pinus sylvestris (Scots pine) trees growing under low and high N availabilities in northern Sweden. We found that needle N status did not significantly affect the temperature responses of V cmax or J max when the responses were fitted to a peaked function. If such N insensitivity is a common tree trait it will simplify the interpretation of the results from gradient and multi‐species studies, which commonly use sites with differing N availabilities, on temperature acclimation of photosynthetic capacity. Moreover, it will simplify modeling efforts aimed at understanding future carbon uptake by precluding the need to adjust the shape of the temperature response curves to variation in N availability. Article in Journal/Newspaper Northern Sweden Wiley Online Library Physiologia Plantarum 162 3 370 378 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
A key weakness in current Earth System Models is the representation of thermal acclimation of photosynthesis in response to changes in growth temperatures. Previous studies in boreal and temperate ecosystems have shown leaf‐scale photosynthetic capacity parameters, the maximum rates of carboxylation ( V cmax ) and electron transport ( J max ), to be positively correlated with foliar nitrogen (N) content at a given reference temperature. It is also known that V cmax and J max exhibit temperature optima that are affected by various environmental factors and, further, that N partitioning among the foliar photosynthetic pools is affected by N availability. However, despite the strong recent anthropogenic influence on atmospheric temperatures and N deposition to forests, little is known about the role of foliar N contents in controlling the photosynthetic temperature responses. In this study, we investigated the temperature dependencies of V cmax and J max in 1‐year‐old needles of mature boreal Pinus sylvestris (Scots pine) trees growing under low and high N availabilities in northern Sweden. We found that needle N status did not significantly affect the temperature responses of V cmax or J max when the responses were fitted to a peaked function. If such N insensitivity is a common tree trait it will simplify the interpretation of the results from gradient and multi‐species studies, which commonly use sites with differing N availabilities, on temperature acclimation of photosynthetic capacity. Moreover, it will simplify modeling efforts aimed at understanding future carbon uptake by precluding the need to adjust the shape of the temperature response curves to variation in N availability. |
author2 |
Vetenskapsrådet Knut och Alice Wallenbergs Stiftelse Sveriges Lantbruksuniversitet VINNOVA Svenska Forskningsrådet Formas Kempestiftelserna |
format |
Article in Journal/Newspaper |
author |
Tarvainen, Lasse Lutz, Martina Räntfors, Mats Näsholm, Torgny Wallin, Göran |
spellingShingle |
Tarvainen, Lasse Lutz, Martina Räntfors, Mats Näsholm, Torgny Wallin, Göran Temperature responses of photosynthetic capacity parameters were not affected by foliar nitrogen content in mature Pinus sylvestris |
author_facet |
Tarvainen, Lasse Lutz, Martina Räntfors, Mats Näsholm, Torgny Wallin, Göran |
author_sort |
Tarvainen, Lasse |
title |
Temperature responses of photosynthetic capacity parameters were not affected by foliar nitrogen content in mature Pinus sylvestris |
title_short |
Temperature responses of photosynthetic capacity parameters were not affected by foliar nitrogen content in mature Pinus sylvestris |
title_full |
Temperature responses of photosynthetic capacity parameters were not affected by foliar nitrogen content in mature Pinus sylvestris |
title_fullStr |
Temperature responses of photosynthetic capacity parameters were not affected by foliar nitrogen content in mature Pinus sylvestris |
title_full_unstemmed |
Temperature responses of photosynthetic capacity parameters were not affected by foliar nitrogen content in mature Pinus sylvestris |
title_sort |
temperature responses of photosynthetic capacity parameters were not affected by foliar nitrogen content in mature pinus sylvestris |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/ppl.12605 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fppl.12605 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ppl.12605 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
Physiologia Plantarum volume 162, issue 3, page 370-378 ISSN 0031-9317 1399-3054 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/ppl.12605 |
container_title |
Physiologia Plantarum |
container_volume |
162 |
container_issue |
3 |
container_start_page |
370 |
op_container_end_page |
378 |
_version_ |
1802648292016783360 |