Thermal buffering capacity of the germination phenotype across the environmental envelope of the Cactaceae
Recruitment from seeds is among the most vulnerable stage for plants as global temperatures change. While germination is the means by which the vast majority of the world's flora regenerate naturally, a framework for accurately predicting which species are at greatest risk of germination failure dur...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Artículo |
| Language: | Inglés |
| Published: |
Wiley
2019
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/5750 |
| _version_ | 1855483681110491136 |
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| author | Seal, Charlotte E. Daws, Matthew I. Flores, Joel Ortega Baes, Francisco Pablo Galindez, Guadalupe León Lobos, Pedro Sandoval, Ana Ceroni Stuva, Aldo Ramírez Bullón, Natali Dávila Aranda, Patricia Ordoñez Salanueva, Cesar A. Yáñez Espinosa, Laura Ulian, Tiziana Amosso, Cecilia Zubani, Lino Torres Bilbao, Alberto Pritchard, Hugh W. |
| author_browse | Amosso, Cecilia Ceroni Stuva, Aldo Daws, Matthew I. Dávila Aranda, Patricia Flores, Joel Galindez, Guadalupe León Lobos, Pedro Ordoñez Salanueva, Cesar A. Ortega Baes, Francisco Pablo Pritchard, Hugh W. Ramírez Bullón, Natali Sandoval, Ana Seal, Charlotte E. Torres Bilbao, Alberto Ulian, Tiziana Yáñez Espinosa, Laura Zubani, Lino |
| author_facet | Seal, Charlotte E. Daws, Matthew I. Flores, Joel Ortega Baes, Francisco Pablo Galindez, Guadalupe León Lobos, Pedro Sandoval, Ana Ceroni Stuva, Aldo Ramírez Bullón, Natali Dávila Aranda, Patricia Ordoñez Salanueva, Cesar A. Yáñez Espinosa, Laura Ulian, Tiziana Amosso, Cecilia Zubani, Lino Torres Bilbao, Alberto Pritchard, Hugh W. |
| author_sort | Seal, Charlotte E. |
| collection | INTA Digital |
| description | Recruitment from seeds is among the most vulnerable stage for plants as global temperatures change. While germination is the means by which the vast majority of the world's flora regenerate naturally, a framework for accurately predicting which species are at greatest risk of germination failure during environmental perturbation is lacking. Taking a physiological approach, we assess how one family, the Cactaceae, may respond to global temperature change based on the thermal buffering capacity of the germination phenotype. We selected 55 cactus species from the Americas, all geo‐referenced seed collections, reflecting the broad environmental envelope of the family across 70° of latitude and 3700 m of altitude. We then generated empirical data of the thermal germination response from which we estimated the minimum (Tb), optimum (To) and ceiling (Tc) temperature for germination and the thermal time (θ50) for each species based on the linearity of germination rate with temperature. Species with the highest Tb and lowest Tc germinated fastest, and the interspecific sensitivity of the germination rate to temperature, as assessed through θ50, varied tenfold. A left‐skewed asymmetry in the germination rate with temperature was relatively common but the unimodal pattern typical of crop species failed for nearly half of the species due to insensitivity to temperature change at To. For 32 fully characterized species, seed thermal parameters correlated strongly with the mean temperature of the wettest quarter of the seed collection sites. By projecting the mean temperature of the wettest quarter under two climate change scenarios, we predict under the least conservative scenario (+3.7°C) that 25% of cactus species will have reduced germination performance, whilst the remainder will have an efficiency gain, by the end of the 21st century. |
| format | Artículo |
| id | INTA5750 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | INTA57502019-09-02T15:39:51Z Thermal buffering capacity of the germination phenotype across the environmental envelope of the Cactaceae Seal, Charlotte E. Daws, Matthew I. Flores, Joel Ortega Baes, Francisco Pablo Galindez, Guadalupe León Lobos, Pedro Sandoval, Ana Ceroni Stuva, Aldo Ramírez Bullón, Natali Dávila Aranda, Patricia Ordoñez Salanueva, Cesar A. Yáñez Espinosa, Laura Ulian, Tiziana Amosso, Cecilia Zubani, Lino Torres Bilbao, Alberto Pritchard, Hugh W. Cactaceae Fisiología Vegetal Germinación Fenotipos Variación Fenotípica Capacidad Térmica Resiliencia Especies en Peligro de Extinción Estrés Térmico Plant Physiology Germination Phenotypes Phenotypic Variation Thermal Capacity Resilience Endangered Species Heat Stress Interspecific Variation Phenotypic Plasticity Plasticidad Fenotípica Recruitment from seeds is among the most vulnerable stage for plants as global temperatures change. While germination is the means by which the vast majority of the world's flora regenerate naturally, a framework for accurately predicting which species are at greatest risk of germination failure during environmental perturbation is lacking. Taking a physiological approach, we assess how one family, the Cactaceae, may respond to global temperature change based on the thermal buffering capacity of the germination phenotype. We selected 55 cactus species from the Americas, all geo‐referenced seed collections, reflecting the broad environmental envelope of the family across 70° of latitude and 3700 m of altitude. We then generated empirical data of the thermal germination response from which we estimated the minimum (Tb), optimum (To) and ceiling (Tc) temperature for germination and the thermal time (θ50) for each species based on the linearity of germination rate with temperature. Species with the highest Tb and lowest Tc germinated fastest, and the interspecific sensitivity of the germination rate to temperature, as assessed through θ50, varied tenfold. A left‐skewed asymmetry in the germination rate with temperature was relatively common but the unimodal pattern typical of crop species failed for nearly half of the species due to insensitivity to temperature change at To. For 32 fully characterized species, seed thermal parameters correlated strongly with the mean temperature of the wettest quarter of the seed collection sites. By projecting the mean temperature of the wettest quarter under two climate change scenarios, we predict under the least conservative scenario (+3.7°C) that 25% of cactus species will have reduced germination performance, whilst the remainder will have an efficiency gain, by the end of the 21st century. EEA Salta Fil: Seal, Charlotte E. Royal Botanic Gardens. Department of Comparative Plant and Fungal Biology, Kew, Ardingly; Reino Unido Fil: Daws, Matthew I. Royal Botanic Gardens. Department of Comparative Plant and Fungal Biology, Kew, Ardingly; Reino Unido Fil: Flores, Joel. Instituto Potosino de Investigación Científica y Tecnológica. División de Ciencias Ambientales; México Fil: Ortega Baes, Francisco Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Escuela de Agronomía. Laboratorio de Investigaciones Botánicas; Argentina Fil: Galindez, Guadalupe. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta. Banco Activo de Germoplasma; Argentina. Fil: León Lobos, Pedro. Instituto de Investigaciones Agropecuarias. Banco Base de Semillas; Chile Fil: Sandoval, Ana. Instituto de Investigaciones Agropecuarias. Banco Base de Semillas; Chile Fil: Ceroni Stuva, Aldo. Universidad Nacional Agraria La Molina. Jardín Botánico “Octavio Velarde Núñez”; Perú Fil: Ramírez Bullón, Natali. Universidad Nacional Agraria La Molina. Jardín Botánico “Octavio Velarde Núñez”; Perú Fil: Dávila Aranda, Patricia. Universidad Nacional Autónoma de México. Facultad de Estudios Superiores-Iztacala; México Fil: Ordoñez Salanueva, Cesar A. Universidad Nacional Autónoma de México. Facultad de Estudios Superiores-Iztacala; México Fil: Yáñez Espinosa, Laura. Universidad Autónoma de San Luis Potosí. Instituto de Investigación de Zonas Desérticas; México Fil: Ulian, Tiziana. Royal Botanic Gardens. Department of Natural Capital & Plant Health, Kew, Ardingly; Reino Unido Fil: Amosso, Cecilia. Università degli Studi di Pavia. Dipartimento di Scienze della Terra e dell’ Ambiente; Italia Fil: Zubani, Lino. Università degli Studi di Pavia. Dipartimento di Scienze della Terra e dell’ Ambiente; Italia Fil: Torres Bilbao, Alberto. Empresa Nacional para la Protección de la Flora y la Fauna; Cuba Fil: Pritchard, Hugh W. Royal Botanic Gardens. Department of Comparative Plant and Fungal Biology, Kew, Ardingly; Reino Unido 2019-09-02T15:36:09Z 2019-09-02T15:36:09Z 2017-06-28 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/5750 1365-2486 (Online) eng info:eu-repo/semantics/restrictedAccess application/pdf Wiley Global change biology 23 (12) : 5309-5317. (December 2017) |
| spellingShingle | Cactaceae Fisiología Vegetal Germinación Fenotipos Variación Fenotípica Capacidad Térmica Resiliencia Especies en Peligro de Extinción Estrés Térmico Plant Physiology Germination Phenotypes Phenotypic Variation Thermal Capacity Resilience Endangered Species Heat Stress Interspecific Variation Phenotypic Plasticity Plasticidad Fenotípica Seal, Charlotte E. Daws, Matthew I. Flores, Joel Ortega Baes, Francisco Pablo Galindez, Guadalupe León Lobos, Pedro Sandoval, Ana Ceroni Stuva, Aldo Ramírez Bullón, Natali Dávila Aranda, Patricia Ordoñez Salanueva, Cesar A. Yáñez Espinosa, Laura Ulian, Tiziana Amosso, Cecilia Zubani, Lino Torres Bilbao, Alberto Pritchard, Hugh W. Thermal buffering capacity of the germination phenotype across the environmental envelope of the Cactaceae |
| title | Thermal buffering capacity of the germination phenotype across the environmental envelope of the Cactaceae |
| title_full | Thermal buffering capacity of the germination phenotype across the environmental envelope of the Cactaceae |
| title_fullStr | Thermal buffering capacity of the germination phenotype across the environmental envelope of the Cactaceae |
| title_full_unstemmed | Thermal buffering capacity of the germination phenotype across the environmental envelope of the Cactaceae |
| title_short | Thermal buffering capacity of the germination phenotype across the environmental envelope of the Cactaceae |
| title_sort | thermal buffering capacity of the germination phenotype across the environmental envelope of the cactaceae |
| topic | Cactaceae Fisiología Vegetal Germinación Fenotipos Variación Fenotípica Capacidad Térmica Resiliencia Especies en Peligro de Extinción Estrés Térmico Plant Physiology Germination Phenotypes Phenotypic Variation Thermal Capacity Resilience Endangered Species Heat Stress Interspecific Variation Phenotypic Plasticity Plasticidad Fenotípica |
| url | http://hdl.handle.net/20.500.12123/5750 |
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