Intra-population variability in the drought response of a beech (Fagus sylvatica L.) population in the southwest of Europe
Phenotypic variability within forest species populations is considered of special relevance for local adaptation under new environments, albeit it has been analyzed to a lesser extent than inter-population phenotypic variability. A common garden study was carried out to assess phenotypic variability...
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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2018
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| Acceso en línea: | https://academic.oup.com/treephys/article-abstract/37/7/938/3862735 http://hdl.handle.net/20.500.12123/2342 https://doi.org/10.1093/treephys/tpx058 |
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| author | Aranda, Ismael Bahamonde, Héctor Alejandro Sánchez-Gómez, David |
| author_browse | Aranda, Ismael Bahamonde, Héctor Alejandro Sánchez-Gómez, David |
| author_facet | Aranda, Ismael Bahamonde, Héctor Alejandro Sánchez-Gómez, David |
| author_sort | Aranda, Ismael |
| collection | INTA Digital |
| description | Phenotypic variability within forest species populations is considered of special relevance for local adaptation under new environments, albeit it has been analyzed to a lesser extent than inter-population phenotypic variability. A common garden study was carried out to assess phenotypic variability in response to water stress in half-sibling families from a marginal population of Fagus sylvatica L. at its south-western range edge distribution in Europe. Two irrigation regimes were applied, well-watered (WW) seedlings and those submitted to weekly cycles of drying–rewatering of growth media. Seedling growth and their leaf functional traits were recorded during the last cycle of water stress. Most of the phenotypic changes were explained by phenotypic plasticity in response to water stress, but there was also a significant effect of family in the expression of some of the studied traits. The relationship of carbon isotope fractioning with gas exchange traits across families under WW conditions did not follow the same pattern as the phenotypic trends. The leaf net photosynthesis across families was modified by the nitrogen content on a leaf mass basis that was in turn correlated positively with leaf nitrogen isotope fractionation. The results point to an important role of leaf nitrogen in determining the intrinsic water-use efficiency (WUE) across families. Variation in WUE was ruled mainly by control of stomatal conductance to water vapor under water stress, but by leaf net photosynthesis under wet conditions. Relatively high inter-family phenotypic variability in growth and functional traits were observed. Within-population phenotypic variability, and the plasticity of some of the studied traits, is of fundamental importance to cope with the harsher environments beech will have to endure in the future at different points in its distribution range. |
| format | Artículo |
| id | INTA2342 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA23422018-06-29T18:13:40Z Intra-population variability in the drought response of a beech (Fagus sylvatica L.) population in the southwest of Europe Aranda, Ismael Bahamonde, Héctor Alejandro Sánchez-Gómez, David Fagus Sylvatica Sequía Fenotipos Variación Genética Drought Phenotypes Genetic Variation Haya Europea Sudoeste de Europa Phenotypic variability within forest species populations is considered of special relevance for local adaptation under new environments, albeit it has been analyzed to a lesser extent than inter-population phenotypic variability. A common garden study was carried out to assess phenotypic variability in response to water stress in half-sibling families from a marginal population of Fagus sylvatica L. at its south-western range edge distribution in Europe. Two irrigation regimes were applied, well-watered (WW) seedlings and those submitted to weekly cycles of drying–rewatering of growth media. Seedling growth and their leaf functional traits were recorded during the last cycle of water stress. Most of the phenotypic changes were explained by phenotypic plasticity in response to water stress, but there was also a significant effect of family in the expression of some of the studied traits. The relationship of carbon isotope fractioning with gas exchange traits across families under WW conditions did not follow the same pattern as the phenotypic trends. The leaf net photosynthesis across families was modified by the nitrogen content on a leaf mass basis that was in turn correlated positively with leaf nitrogen isotope fractionation. The results point to an important role of leaf nitrogen in determining the intrinsic water-use efficiency (WUE) across families. Variation in WUE was ruled mainly by control of stomatal conductance to water vapor under water stress, but by leaf net photosynthesis under wet conditions. Relatively high inter-family phenotypic variability in growth and functional traits were observed. Within-population phenotypic variability, and the plasticity of some of the studied traits, is of fundamental importance to cope with the harsher environments beech will have to endure in the future at different points in its distribution range. EEA Santa Cruz Fil: Aranda, Ismael. Instituto Nacional de Investigaciones Agrarias y Tecnologías Agroalimentarias (INIA). Centro de Investigación Forestal. Department of Forest Ecology and Genetics; España Fil: Bahamonde, Héctor Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Universidad Nacional de la Patagonia Austral; Argentina Fil: Sánchez-Gómez, David. Instituto Nacional de Investigaciones Agrarias y Tecnologías Agroalimentarias (INIA). Centro de Investigación Forestal. Department of Forest Ecology and Genetics; España. Instituto Regional de Investigación y Desarrollo Agroalimentario y Forestal de Castilla La Mancha (IRIAF). Centro de Investigación Agroforestal de Albaladejito (CIAF); España 2018-05-07T17:01:05Z 2018-05-07T17:01:05Z 2017-06 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://academic.oup.com/treephys/article-abstract/37/7/938/3862735 http://hdl.handle.net/20.500.12123/2342 0829-318X 1758-4469 https://doi.org/10.1093/treephys/tpx058 eng info:eu-repo/semantics/restrictedAccess application/pdf Tree physiology 37 (7) : 938–949. (July 2017) |
| spellingShingle | Fagus Sylvatica Sequía Fenotipos Variación Genética Drought Phenotypes Genetic Variation Haya Europea Sudoeste de Europa Aranda, Ismael Bahamonde, Héctor Alejandro Sánchez-Gómez, David Intra-population variability in the drought response of a beech (Fagus sylvatica L.) population in the southwest of Europe |
| title | Intra-population variability in the drought response of a beech (Fagus sylvatica L.) population in the southwest of Europe |
| title_full | Intra-population variability in the drought response of a beech (Fagus sylvatica L.) population in the southwest of Europe |
| title_fullStr | Intra-population variability in the drought response of a beech (Fagus sylvatica L.) population in the southwest of Europe |
| title_full_unstemmed | Intra-population variability in the drought response of a beech (Fagus sylvatica L.) population in the southwest of Europe |
| title_short | Intra-population variability in the drought response of a beech (Fagus sylvatica L.) population in the southwest of Europe |
| title_sort | intra population variability in the drought response of a beech fagus sylvatica l population in the southwest of europe |
| topic | Fagus Sylvatica Sequía Fenotipos Variación Genética Drought Phenotypes Genetic Variation Haya Europea Sudoeste de Europa |
| url | https://academic.oup.com/treephys/article-abstract/37/7/938/3862735 http://hdl.handle.net/20.500.12123/2342 https://doi.org/10.1093/treephys/tpx058 |
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