Leaf phosphorus influences the photosynthesis-nitrogen relation:A cross-biome analysis of 314 species
The ecophysiological linkage of leaf phosphorus (P) to photosynthetic capacity (A max ) and to the A max -nitrogen relation remains poorly understood. To address this issue we compiled published and unpublished field data for mass-based A max , nitrogen (N) and P (n = 517 observations) from 314 spec...
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/5171a166-80b1-40ed-a6e9-3455a6628895 2024-06-23T07:50:20+00:00 Leaf phosphorus influences the photosynthesis-nitrogen relation:A cross-biome analysis of 314 species Reich, Peter B. Oleksyn, Jacek Wright, Ian J. 2009-05 https://researchers.mq.edu.au/en/publications/5171a166-80b1-40ed-a6e9-3455a6628895 https://doi.org/10.1007/s00442-009-1291-3 http://www.scopus.com/inward/record.url?scp=67349263013&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess Reich , P B , Oleksyn , J & Wright , I J 2009 , ' Leaf phosphorus influences the photosynthesis-nitrogen relation : A cross-biome analysis of 314 species ' , Oecologia , vol. 160 , no. 2 , pp. 207-212 . https://doi.org/10.1007/s00442-009-1291-3 article 2009 ftmacquarieunicr https://doi.org/10.1007/s00442-009-1291-3 2024-06-12T23:47:19Z The ecophysiological linkage of leaf phosphorus (P) to photosynthetic capacity (A max ) and to the A max -nitrogen relation remains poorly understood. To address this issue we compiled published and unpublished field data for mass-based A max , nitrogen (N) and P (n = 517 observations) from 314 species at 42 sites in 14 countries. Data were from four biomes: arctic, cold temperate, subtropical (including Mediterranean), and tropical. We asked whether plants with low P levels have low A max , a shallower slope of the A max -N relationship, and whether these patterns have a geographic signature. On average, leaf P was substantially lower in the two warmer than in the two colder biomes, with the reverse true for N:P ratios. The evidence indicates that the response of A max to leaf N is constrained by low leaf P. Using a full factorial model for all data, A max was related to leaf N, but not to leaf P on its own, with a significant leaf N × leaf P interaction indicating that the response of A max to N increased with increasing leaf P. This was also found in analyses using one value per species per site, or by comparing only angiosperms or only woody plants. Additionally, the slope of the A max -N relationship was higher in the colder arctic and temperate than warmer tropical and subtropical biomes. Sorting data into low, medium, and high leaf P groupings also showed that the A max -N slope increases with leaf P. These analyses support claims that in P-limited ecosystems the A max -N relationship may be constrained by low P, and are consistent with laboratory studies that show P-deficient plants have limited ribulose-1,5-bisphosphate regeneration, a likely mechanism for the P influence upon the A max -N relation. Article in Journal/Newspaper Arctic Macquarie University Research Portal Arctic Oecologia 160 2 207 212 |
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Macquarie University Research Portal |
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ftmacquarieunicr |
language |
English |
description |
The ecophysiological linkage of leaf phosphorus (P) to photosynthetic capacity (A max ) and to the A max -nitrogen relation remains poorly understood. To address this issue we compiled published and unpublished field data for mass-based A max , nitrogen (N) and P (n = 517 observations) from 314 species at 42 sites in 14 countries. Data were from four biomes: arctic, cold temperate, subtropical (including Mediterranean), and tropical. We asked whether plants with low P levels have low A max , a shallower slope of the A max -N relationship, and whether these patterns have a geographic signature. On average, leaf P was substantially lower in the two warmer than in the two colder biomes, with the reverse true for N:P ratios. The evidence indicates that the response of A max to leaf N is constrained by low leaf P. Using a full factorial model for all data, A max was related to leaf N, but not to leaf P on its own, with a significant leaf N × leaf P interaction indicating that the response of A max to N increased with increasing leaf P. This was also found in analyses using one value per species per site, or by comparing only angiosperms or only woody plants. Additionally, the slope of the A max -N relationship was higher in the colder arctic and temperate than warmer tropical and subtropical biomes. Sorting data into low, medium, and high leaf P groupings also showed that the A max -N slope increases with leaf P. These analyses support claims that in P-limited ecosystems the A max -N relationship may be constrained by low P, and are consistent with laboratory studies that show P-deficient plants have limited ribulose-1,5-bisphosphate regeneration, a likely mechanism for the P influence upon the A max -N relation. |
format |
Article in Journal/Newspaper |
author |
Reich, Peter B. Oleksyn, Jacek Wright, Ian J. |
spellingShingle |
Reich, Peter B. Oleksyn, Jacek Wright, Ian J. Leaf phosphorus influences the photosynthesis-nitrogen relation:A cross-biome analysis of 314 species |
author_facet |
Reich, Peter B. Oleksyn, Jacek Wright, Ian J. |
author_sort |
Reich, Peter B. |
title |
Leaf phosphorus influences the photosynthesis-nitrogen relation:A cross-biome analysis of 314 species |
title_short |
Leaf phosphorus influences the photosynthesis-nitrogen relation:A cross-biome analysis of 314 species |
title_full |
Leaf phosphorus influences the photosynthesis-nitrogen relation:A cross-biome analysis of 314 species |
title_fullStr |
Leaf phosphorus influences the photosynthesis-nitrogen relation:A cross-biome analysis of 314 species |
title_full_unstemmed |
Leaf phosphorus influences the photosynthesis-nitrogen relation:A cross-biome analysis of 314 species |
title_sort |
leaf phosphorus influences the photosynthesis-nitrogen relation:a cross-biome analysis of 314 species |
publishDate |
2009 |
url |
https://researchers.mq.edu.au/en/publications/5171a166-80b1-40ed-a6e9-3455a6628895 https://doi.org/10.1007/s00442-009-1291-3 http://www.scopus.com/inward/record.url?scp=67349263013&partnerID=8YFLogxK |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Reich , P B , Oleksyn , J & Wright , I J 2009 , ' Leaf phosphorus influences the photosynthesis-nitrogen relation : A cross-biome analysis of 314 species ' , Oecologia , vol. 160 , no. 2 , pp. 207-212 . https://doi.org/10.1007/s00442-009-1291-3 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/s00442-009-1291-3 |
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Oecologia |
container_volume |
160 |
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2 |
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207 |
op_container_end_page |
212 |
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1802641199105835008 |