Genetic versus environmental contributions to variation in seedling resprouting in Nothofagus obliqua
Resprouting is an almost universal functional trait in temperate angiosperms and confers persistence at an individual level after the loss of above-ground biomass. The importance of genetic versus environmental sources of intraspecific variation in resprouting traits is largely unknown. We conducted...
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| Format: | Artículo |
| Language: | Inglés |
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Springer
2018
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| Online Access: | https://link.springer.com/article/10.1007/s11295-015-0847-0 http://hdl.handle.net/20.500.12123/3911 https://doi.org/10.1007/s11295-015-0847-0 |
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| author | Aparicio, Alejandro Gabriel Zuki, Sebastián Maximiliano Azpilicueta, Maria Marta Barbero, Fernando Alvaro Pastorino, Mario Juan |
| author_browse | Aparicio, Alejandro Gabriel Azpilicueta, Maria Marta Barbero, Fernando Alvaro Pastorino, Mario Juan Zuki, Sebastián Maximiliano |
| author_facet | Aparicio, Alejandro Gabriel Zuki, Sebastián Maximiliano Azpilicueta, Maria Marta Barbero, Fernando Alvaro Pastorino, Mario Juan |
| author_sort | Aparicio, Alejandro Gabriel |
| collection | INTA Digital |
| description | Resprouting is an almost universal functional trait in temperate angiosperms and confers persistence at an individual level after the loss of above-ground biomass. The importance of genetic versus environmental sources of intraspecific variation in resprouting traits is largely unknown. We conducted two genetic field trials, 400 m apart in altitude, in order to sequentially assess seedling resprouting in four environmentally contrasting Argentinean populations of Nothofagus obliqua Mirb. (Oerst). We also performed one nursery test to determine whether populations differed in early root/shoot biomass partition, a key trade-off affecting resprouting. Initial resprouting vigour and final survival were higher in our warmer test site, located 300 m below the core range of the species. The main contrasts between populations were found for pre-clipping seedling size and resprouting profusion, the latter trait showing a clear trade-off with resprouting vigour. Site × population interactions were due mainly to the behaviour of the highest altitude population, suggesting its divergent adaptive trajectory and higher plasticity for resprouting traits. Within populations, trait heritability was low, in general. Episodic frost, which may limit resprouting vigour and final success, had a lower incidence in the altitudinal and xeric limit populations. Overall, our work revealed genetic variation between populations of N. obliqua in traits that determine the success of seedling resprouting, probably associated with divergent selection. Low trait heritability suggests limited in situ micro-evolutionary capacities for resprouting traits under ongoing climate warming; phenotypic plasticity may play an important role in population persistence at the low positions of the elevation gradients N. obliqua currently inhabits. |
| format | Artículo |
| id | INTA3911 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | INTA39112018-11-15T18:09:31Z Genetic versus environmental contributions to variation in seedling resprouting in Nothofagus obliqua Aparicio, Alejandro Gabriel Zuki, Sebastián Maximiliano Azpilicueta, Maria Marta Barbero, Fernando Alvaro Pastorino, Mario Juan Nothofagus Genética Medio Ambiente Plántulas Heredabilidad Genetics Environment Seedlings Heritability Nothofagus obliqua Resprouting is an almost universal functional trait in temperate angiosperms and confers persistence at an individual level after the loss of above-ground biomass. The importance of genetic versus environmental sources of intraspecific variation in resprouting traits is largely unknown. We conducted two genetic field trials, 400 m apart in altitude, in order to sequentially assess seedling resprouting in four environmentally contrasting Argentinean populations of Nothofagus obliqua Mirb. (Oerst). We also performed one nursery test to determine whether populations differed in early root/shoot biomass partition, a key trade-off affecting resprouting. Initial resprouting vigour and final survival were higher in our warmer test site, located 300 m below the core range of the species. The main contrasts between populations were found for pre-clipping seedling size and resprouting profusion, the latter trait showing a clear trade-off with resprouting vigour. Site × population interactions were due mainly to the behaviour of the highest altitude population, suggesting its divergent adaptive trajectory and higher plasticity for resprouting traits. Within populations, trait heritability was low, in general. Episodic frost, which may limit resprouting vigour and final success, had a lower incidence in the altitudinal and xeric limit populations. Overall, our work revealed genetic variation between populations of N. obliqua in traits that determine the success of seedling resprouting, probably associated with divergent selection. Low trait heritability suggests limited in situ micro-evolutionary capacities for resprouting traits under ongoing climate warming; phenotypic plasticity may play an important role in population persistence at the low positions of the elevation gradients N. obliqua currently inhabits. EEA Bariloche Fil: Aparicio, Alejandro Gabriel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estacion Experimental Agropecuaria Bariloche; Argentina Fil: Zuki, Sebastián Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina Fil: Azpilicueta, Maria Marta. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Barbero, Fernando Alvaro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina Fil: Pastorino, Mario Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina 2018-11-15T18:07:17Z 2018-11-15T18:07:17Z 2015-04 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://link.springer.com/article/10.1007/s11295-015-0847-0 http://hdl.handle.net/20.500.12123/3911 1614-2942 1614-2950 https://doi.org/10.1007/s11295-015-0847-0 eng info:eu-repo/semantics/restrictedAccess application/pdf Springer Tree Genetics & Genomes 11 : 23. (April 2015) |
| spellingShingle | Nothofagus Genética Medio Ambiente Plántulas Heredabilidad Genetics Environment Seedlings Heritability Nothofagus obliqua Aparicio, Alejandro Gabriel Zuki, Sebastián Maximiliano Azpilicueta, Maria Marta Barbero, Fernando Alvaro Pastorino, Mario Juan Genetic versus environmental contributions to variation in seedling resprouting in Nothofagus obliqua |
| title | Genetic versus environmental contributions to variation in seedling resprouting in Nothofagus obliqua |
| title_full | Genetic versus environmental contributions to variation in seedling resprouting in Nothofagus obliqua |
| title_fullStr | Genetic versus environmental contributions to variation in seedling resprouting in Nothofagus obliqua |
| title_full_unstemmed | Genetic versus environmental contributions to variation in seedling resprouting in Nothofagus obliqua |
| title_short | Genetic versus environmental contributions to variation in seedling resprouting in Nothofagus obliqua |
| title_sort | genetic versus environmental contributions to variation in seedling resprouting in nothofagus obliqua |
| topic | Nothofagus Genética Medio Ambiente Plántulas Heredabilidad Genetics Environment Seedlings Heritability Nothofagus obliqua |
| url | https://link.springer.com/article/10.1007/s11295-015-0847-0 http://hdl.handle.net/20.500.12123/3911 https://doi.org/10.1007/s11295-015-0847-0 |
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