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Phosphorus limitation of early growth differs between nitrogen‐fixing and nonfixing dry tropical forest tree species

Tropical forests are often characterized by low soil phosphorus (P) availability, suggesting that P limits plant performance. However, how seedlings from different functional types respond to soil P availability is poorly known but important for understanding and modeling forest dynamics under chang...

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Autores principales: Toro, Laura, Pereira‐Arias, Damaris, Perez‐Aviles, Daniel, Vargas G., German, Soper, Fiona M., Gutknecht, Jessica, Powers, Jennifer S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10107181/
https://www.ncbi.nlm.nih.gov/pubmed/36352518
http://dx.doi.org/10.1111/nph.18612
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author Toro, Laura
Pereira‐Arias, Damaris
Perez‐Aviles, Daniel
Vargas G., German
Soper, Fiona M.
Gutknecht, Jessica
Powers, Jennifer S.
author_facet Toro, Laura
Pereira‐Arias, Damaris
Perez‐Aviles, Daniel
Vargas G., German
Soper, Fiona M.
Gutknecht, Jessica
Powers, Jennifer S.
author_sort Toro, Laura
collection PubMed
description Tropical forests are often characterized by low soil phosphorus (P) availability, suggesting that P limits plant performance. However, how seedlings from different functional types respond to soil P availability is poorly known but important for understanding and modeling forest dynamics under changing environmental conditions. We grew four nitrogen (N)‐fixing Fabaceae and seven diverse non‐N‐fixing tropical dry forest tree species in a shade house under three P fertilization treatments and evaluated carbon (C) allocation responses, P demand, P‐use, investment in P acquisition traits, and correlations among P acquisition traits. Nitrogen fixers grew larger with increasing P addition in contrast to non‐N fixers, which showed fewer responses in C allocation and P use. Foliar P increased with P addition for both functional types, while P acquisition strategies did not vary among treatments but differed between functional types, with N fixers showing higher root phosphatase activity (RPA) than nonfixers. Growth responses suggest that N fixers are limited by P, but nonfixers may be limited by other resources. However, regardless of limitation, P acquisition traits such as mycorrhizal colonization and RPA were nonplastic across a steep P gradient. Differential limitation among plant functional types has implications for forest succession and earth system models.
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spelling pubmed-101071812023-04-18 Phosphorus limitation of early growth differs between nitrogen‐fixing and nonfixing dry tropical forest tree species Toro, Laura Pereira‐Arias, Damaris Perez‐Aviles, Daniel Vargas G., German Soper, Fiona M. Gutknecht, Jessica Powers, Jennifer S. New Phytol Research Tropical forests are often characterized by low soil phosphorus (P) availability, suggesting that P limits plant performance. However, how seedlings from different functional types respond to soil P availability is poorly known but important for understanding and modeling forest dynamics under changing environmental conditions. We grew four nitrogen (N)‐fixing Fabaceae and seven diverse non‐N‐fixing tropical dry forest tree species in a shade house under three P fertilization treatments and evaluated carbon (C) allocation responses, P demand, P‐use, investment in P acquisition traits, and correlations among P acquisition traits. Nitrogen fixers grew larger with increasing P addition in contrast to non‐N fixers, which showed fewer responses in C allocation and P use. Foliar P increased with P addition for both functional types, while P acquisition strategies did not vary among treatments but differed between functional types, with N fixers showing higher root phosphatase activity (RPA) than nonfixers. Growth responses suggest that N fixers are limited by P, but nonfixers may be limited by other resources. However, regardless of limitation, P acquisition traits such as mycorrhizal colonization and RPA were nonplastic across a steep P gradient. Differential limitation among plant functional types has implications for forest succession and earth system models. John Wiley and Sons Inc. 2022-12-02 2023-02 /pmc/articles/PMC10107181/ /pubmed/36352518 http://dx.doi.org/10.1111/nph.18612 Text en © 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation. https://creativecommons.org/licenses/by-nc/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
spellingShingle Research
Toro, Laura
Pereira‐Arias, Damaris
Perez‐Aviles, Daniel
Vargas G., German
Soper, Fiona M.
Gutknecht, Jessica
Powers, Jennifer S.
Phosphorus limitation of early growth differs between nitrogen‐fixing and nonfixing dry tropical forest tree species
title Phosphorus limitation of early growth differs between nitrogen‐fixing and nonfixing dry tropical forest tree species
title_full Phosphorus limitation of early growth differs between nitrogen‐fixing and nonfixing dry tropical forest tree species
title_fullStr Phosphorus limitation of early growth differs between nitrogen‐fixing and nonfixing dry tropical forest tree species
title_full_unstemmed Phosphorus limitation of early growth differs between nitrogen‐fixing and nonfixing dry tropical forest tree species
title_short Phosphorus limitation of early growth differs between nitrogen‐fixing and nonfixing dry tropical forest tree species
title_sort phosphorus limitation of early growth differs between nitrogen‐fixing and nonfixing dry tropical forest tree species
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10107181/
https://www.ncbi.nlm.nih.gov/pubmed/36352518
http://dx.doi.org/10.1111/nph.18612
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