Germination response to water availability in populations of Festuca pallescens along a Patagonian rainfall gradient based on hydrotime model parameters
Sensitivity to water availability is a key physiological trait for grassland species located in arid and semiarid environments, where successful germination is closely related to rainfall dynamics. Festuca pallescens inhabits diverse environments along a steep precipitation gradient in North Patagon...
| Autores principales: | , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Springer Nature
2021
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/9495 https://www.nature.com/articles/s41598-021-89901-1 https://doi.org/10.1038/s41598-021-89901-1 |
| _version_ | 1855036223931809792 |
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| author | Lopez, Aldana Soledad Lopez, Dardo Ruben Arana, María Veronica Battla, Diego Marchelli, Paula |
| author_browse | Arana, María Veronica Battla, Diego Lopez, Aldana Soledad Lopez, Dardo Ruben Marchelli, Paula |
| author_facet | Lopez, Aldana Soledad Lopez, Dardo Ruben Arana, María Veronica Battla, Diego Marchelli, Paula |
| author_sort | Lopez, Aldana Soledad |
| collection | INTA Digital |
| description | Sensitivity to water availability is a key physiological trait for grassland species located in arid and semiarid environments, where successful germination is closely related to rainfall dynamics. Festuca pallescens inhabits diverse environments along a steep precipitation gradient in North Patagonia, thus offering a suitable model for the study of germination behavior in response to water availability. By analyzing germination in nine populations using a hydrotime model approach, we aimed to find within-species variation. Seed population behavior was analyzed under different hydric conditions using hydrotime model parameters (hydrotime, mean base water potential and its standard deviation). We estimated the mean base water potential for F. pallescens (ψb(50) = − 2.79 ± 0.45 MPa), which did not differ significantly between populations. However, the hydrotime parameter (θH) varied markedly, suggesting physiological adaptation to local environments. Higher values of θH were found in populations located at the extremes of the distribution gradient, indicating that germination may be prevented or delayed in conditions that are suboptimal for the species. Since the variation in hydrotime model parameters did not follow a cline, micro-environmental cues may have the greatest
influence on the physiological behavior of the species, rather than the macroscale rainfall gradient. |
| format | info:ar-repo/semantics/artículo |
| id | INTA9495 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Springer Nature |
| publisherStr | Springer Nature |
| record_format | dspace |
| spelling | INTA94952021-06-04T11:54:44Z Germination response to water availability in populations of Festuca pallescens along a Patagonian rainfall gradient based on hydrotime model parameters Lopez, Aldana Soledad Lopez, Dardo Ruben Arana, María Veronica Battla, Diego Marchelli, Paula Festuca Gramíneas Forrajeras Pastizales Pastizal Natural Feed Grasses Pastures Natural Pastures Festuca pallescens Región Patagónica Gradiente de Lluvias Sensitivity to water availability is a key physiological trait for grassland species located in arid and semiarid environments, where successful germination is closely related to rainfall dynamics. Festuca pallescens inhabits diverse environments along a steep precipitation gradient in North Patagonia, thus offering a suitable model for the study of germination behavior in response to water availability. By analyzing germination in nine populations using a hydrotime model approach, we aimed to find within-species variation. Seed population behavior was analyzed under different hydric conditions using hydrotime model parameters (hydrotime, mean base water potential and its standard deviation). We estimated the mean base water potential for F. pallescens (ψb(50) = − 2.79 ± 0.45 MPa), which did not differ significantly between populations. However, the hydrotime parameter (θH) varied markedly, suggesting physiological adaptation to local environments. Higher values of θH were found in populations located at the extremes of the distribution gradient, indicating that germination may be prevented or delayed in conditions that are suboptimal for the species. Since the variation in hydrotime model parameters did not follow a cline, micro-environmental cues may have the greatest influence on the physiological behavior of the species, rather than the macroscale rainfall gradient. Estación Experimental Agropecuaria Bariloche Fil: Lopez, Aldana Soledad. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Lopez, Aldana Soledad. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Lopez, Dardo Ruben. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi. Campo Anexo Villa Dolores; Argentina Fil: Arana, María Veronica. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Arana, María Veronica. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Battla, Diego. Universidad Nacional de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina Fil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Marchelli, Paula. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina 2021-06-04T11:29:48Z 2021-06-04T11:29:48Z 2021-05 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/9495 https://www.nature.com/articles/s41598-021-89901-1 2045-2322 https://doi.org/10.1038/s41598-021-89901-1 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Springer Nature Scientific Reports 11 : Art.: 10653 (May 2021) |
| spellingShingle | Festuca Gramíneas Forrajeras Pastizales Pastizal Natural Feed Grasses Pastures Natural Pastures Festuca pallescens Región Patagónica Gradiente de Lluvias Lopez, Aldana Soledad Lopez, Dardo Ruben Arana, María Veronica Battla, Diego Marchelli, Paula Germination response to water availability in populations of Festuca pallescens along a Patagonian rainfall gradient based on hydrotime model parameters |
| title | Germination response to water availability in populations of Festuca pallescens along a Patagonian rainfall gradient based on hydrotime model parameters |
| title_full | Germination response to water availability in populations of Festuca pallescens along a Patagonian rainfall gradient based on hydrotime model parameters |
| title_fullStr | Germination response to water availability in populations of Festuca pallescens along a Patagonian rainfall gradient based on hydrotime model parameters |
| title_full_unstemmed | Germination response to water availability in populations of Festuca pallescens along a Patagonian rainfall gradient based on hydrotime model parameters |
| title_short | Germination response to water availability in populations of Festuca pallescens along a Patagonian rainfall gradient based on hydrotime model parameters |
| title_sort | germination response to water availability in populations of festuca pallescens along a patagonian rainfall gradient based on hydrotime model parameters |
| topic | Festuca Gramíneas Forrajeras Pastizales Pastizal Natural Feed Grasses Pastures Natural Pastures Festuca pallescens Región Patagónica Gradiente de Lluvias |
| url | http://hdl.handle.net/20.500.12123/9495 https://www.nature.com/articles/s41598-021-89901-1 https://doi.org/10.1038/s41598-021-89901-1 |
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