Isotopic Signal Supports Physiological Integration in Root Suckers of Two Tree Species Differing in Shade Tolerance
The physiological performance of clonal plants is largely linked with resource translocation among interconnected ramets. Whereas carbon (C) and nitrogen (N) transferences have been evidenced in several herbaceous clonal plants, empirical evidence in woody species is anecdotal. We evaluated physiolo...
| Autores: | , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/379502 |
| Acceso en línea: | http://hdl.handle.net/10261/379502 |
| Access Level: | acceso abierto |
| Palabra clave: | δ13C δ15N Functional traits Physiological integration Pulse labeling Ramets |
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Isotopic Signal Supports Physiological Integration in Root Suckers of Two Tree Species Differing in Shade ToleranceEscandón, Antonio B.Ferrio, Juan PedroSaldaña, AlfredoFlores-Bavestrello, AlejandraAburto, Felipe A.Paula, Susanaδ13Cδ15NFunctional traitsPhysiological integrationPulse labelingRametsThe physiological performance of clonal plants is largely linked with resource translocation among interconnected ramets. Whereas carbon (C) and nitrogen (N) transferences have been evidenced in several herbaceous clonal plants, empirical evidence in woody species is anecdotal. We evaluated physiological integration in two evergreen tree species, differing in the light requirements in a temperate rainforest of Southern Chile: <i>Embothrium coccineum</i> J.R. et. G. Forster (light-demanding) and <i>Eucryphia cordifolia</i> Cav. (shade-tolerant). We measured light availability for vegetative (root suckers) and sexual (seed-origin plants; hereafter, saplings) recruits of the two species. Then, we compared elemental and isotopic leaf traits between recruit types and species growing under similar light availability. A <sup>13</sup>CO<sub>2</sub> field pulse labeling was performed on a set of <i>Embothrium</i> root suckers to quantify C transfer from moderately shaded suckers (donors) to highly shaded suckers (receivers). For the two species, leaf N concentration, δ<sup>13</sup>C, and δ<sup>15</sup>N were higher in suckers compared to saplings. In the labeling experiment, the δ<sup>13</sup>C and <sup>12</sup>C equivalent excess did not differ between donor and receiver, indicating a weak C transfer between donors and receivers. Although the results from the pulse labeling were not conclusive, they suggest, together with the differences in natural isotope abundance, the existence of physiological integration in root suckers of both species. Our findings indicate that the formation of root suckers is more important for regeneration and persistence than for resource acquisition at an intermediate ecological succession of a temperate rainforest.A.B.E. was supported by CONICYT doctoral fellowship No. 21140422 and Postdoctoral ANID fellowship No. 3220691. A.B.E. thanks the EDPG LPR-161 project for partially paying for the elemental and stable isotope analysis. J.P.F. was supported by Reference Group S74_23R (Gobierno de Aragón, Spain). F.A.A. thanks to FONDEQUIP Project No. EQM 150018 for providing equipment access and supporting isotope analysis. S.P. was funded by the ANID PIA/BASAL FB210006 (Chile).Peer reviewedMultidisciplinary Digital Publishing InstituteGobierno de AragónPrograma de Equipamiento Científico y Tecnológico (Chile)Escandón, Antonio B. [0009-0004-2724-2728]Ferrio, Juan Pedro [0000-0001-5904-7821]Saldaña, Alfredo [0000-0001-5161-5150]Aburto, Felipe A. [0000-0001-9472-930X]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2025202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/379502reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésThe underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.3390/f16020210https://doi.org/10.3390/f16020210Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3795022026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Isotopic Signal Supports Physiological Integration in Root Suckers of Two Tree Species Differing in Shade Tolerance |
| title |
Isotopic Signal Supports Physiological Integration in Root Suckers of Two Tree Species Differing in Shade Tolerance |
| spellingShingle |
Isotopic Signal Supports Physiological Integration in Root Suckers of Two Tree Species Differing in Shade Tolerance Escandón, Antonio B. δ13C δ15N Functional traits Physiological integration Pulse labeling Ramets |
| title_short |
Isotopic Signal Supports Physiological Integration in Root Suckers of Two Tree Species Differing in Shade Tolerance |
| title_full |
Isotopic Signal Supports Physiological Integration in Root Suckers of Two Tree Species Differing in Shade Tolerance |
| title_fullStr |
Isotopic Signal Supports Physiological Integration in Root Suckers of Two Tree Species Differing in Shade Tolerance |
| title_full_unstemmed |
Isotopic Signal Supports Physiological Integration in Root Suckers of Two Tree Species Differing in Shade Tolerance |
| title_sort |
Isotopic Signal Supports Physiological Integration in Root Suckers of Two Tree Species Differing in Shade Tolerance |
| dc.creator.none.fl_str_mv |
Escandón, Antonio B. Ferrio, Juan Pedro Saldaña, Alfredo Flores-Bavestrello, Alejandra Aburto, Felipe A. Paula, Susana |
| author |
Escandón, Antonio B. |
| author_facet |
Escandón, Antonio B. Ferrio, Juan Pedro Saldaña, Alfredo Flores-Bavestrello, Alejandra Aburto, Felipe A. Paula, Susana |
| author_role |
author |
| author2 |
Ferrio, Juan Pedro Saldaña, Alfredo Flores-Bavestrello, Alejandra Aburto, Felipe A. Paula, Susana |
| author2_role |
author author author author author |
| dc.contributor.none.fl_str_mv |
Gobierno de Aragón Programa de Equipamiento Científico y Tecnológico (Chile) Escandón, Antonio B. [0009-0004-2724-2728] Ferrio, Juan Pedro [0000-0001-5904-7821] Saldaña, Alfredo [0000-0001-5161-5150] Aburto, Felipe A. [0000-0001-9472-930X] Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
δ13C δ15N Functional traits Physiological integration Pulse labeling Ramets |
| topic |
δ13C δ15N Functional traits Physiological integration Pulse labeling Ramets |
| description |
The physiological performance of clonal plants is largely linked with resource translocation among interconnected ramets. Whereas carbon (C) and nitrogen (N) transferences have been evidenced in several herbaceous clonal plants, empirical evidence in woody species is anecdotal. We evaluated physiological integration in two evergreen tree species, differing in the light requirements in a temperate rainforest of Southern Chile: <i>Embothrium coccineum</i> J.R. et. G. Forster (light-demanding) and <i>Eucryphia cordifolia</i> Cav. (shade-tolerant). We measured light availability for vegetative (root suckers) and sexual (seed-origin plants; hereafter, saplings) recruits of the two species. Then, we compared elemental and isotopic leaf traits between recruit types and species growing under similar light availability. A <sup>13</sup>CO<sub>2</sub> field pulse labeling was performed on a set of <i>Embothrium</i> root suckers to quantify C transfer from moderately shaded suckers (donors) to highly shaded suckers (receivers). For the two species, leaf N concentration, δ<sup>13</sup>C, and δ<sup>15</sup>N were higher in suckers compared to saplings. In the labeling experiment, the δ<sup>13</sup>C and <sup>12</sup>C equivalent excess did not differ between donor and receiver, indicating a weak C transfer between donors and receivers. Although the results from the pulse labeling were not conclusive, they suggest, together with the differences in natural isotope abundance, the existence of physiological integration in root suckers of both species. Our findings indicate that the formation of root suckers is more important for regeneration and persistence than for resource acquisition at an intermediate ecological succession of a temperate rainforest. |
| publishDate |
2025 |
| dc.date.none.fl_str_mv |
2025 2025 2025 2025 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/379502 |
| url |
http://hdl.handle.net/10261/379502 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.3390/f16020210 https://doi.org/10.3390/f16020210 Sí |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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Multidisciplinary Digital Publishing Institute |
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Multidisciplinary Digital Publishing Institute |
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reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
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Consejo Superior de Investigaciones Científicas (CSIC) |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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