Heritable variation in the survival of seedlings from Patagonian cypress marginal xeric populations coping with drought and extreme cold
The rear edges of tree species have begun to be perceived as highly valuable for genetic resources conservation and management. In view of expected climatic changes, the responses of trees at their xeric limits may largely be determined by their capacity to cope with augmented environmental variance...
| Main Authors: | , , , , |
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| Format: | Artículo |
| Language: | Inglés |
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Springer
2020
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| Online Access: | http://hdl.handle.net/20.500.12123/7223 https://link.springer.com/article/10.1007/s11295-011-0465-4 https://doi.org/10.1007/s11295-011-0465-4 |
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| author | Aparicio, Alejandro Gabriel Zuki, Sebastián Maximiliano Pastorino, Mario Juan Martinez Meier, Alejandro Gallo, Leonardo Ariel |
| author_browse | Aparicio, Alejandro Gabriel Gallo, Leonardo Ariel Martinez Meier, Alejandro Pastorino, Mario Juan Zuki, Sebastián Maximiliano |
| author_facet | Aparicio, Alejandro Gabriel Zuki, Sebastián Maximiliano Pastorino, Mario Juan Martinez Meier, Alejandro Gallo, Leonardo Ariel |
| author_sort | Aparicio, Alejandro Gabriel |
| collection | INTA Digital |
| description | The rear edges of tree species have begun to be perceived as highly valuable for genetic resources conservation and management. In view of expected climatic changes, the responses of trees at their xeric limits may largely be determined by their capacity to cope with augmented environmental variance.We assess the heritability of early survival of Patagonian cypress in two common-garden
field tests with contrasting summer water deficits, comprising 140 and 163 open-pollinated families from 10 marginal xeric populations. The first experiment underwent less rigorous conditions than the average mesic, Mediterranean climatic conditions, which were sufficient to reveal additive genetic effects of summer drought on seedling survival. The second trial suffered strong summer water-deficit stress and a winter extreme cold event. In this harsher environment, the heritabilities of survival under summer water-deficit stress were high in all the populations (h200.84 on average), while the heritabilities of seasonal, extreme cold survival were moderate or even nil (h200.28 on average). We did not find evidence of genetic differentiation among populations in their capabilities to survive droughts and cold extremes.
Our results indicate that even when climatic changes were strong enough to cause the extinction of the most threatened populations, heritable variation for traits underlying drought and cold tolerances may allow the marginal xeric edge of cypress to persist under augmented environmental variance, without losing overall genetic diversity. |
| format | Artículo |
| id | INTA7223 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | INTA72232020-05-12T12:33:57Z Heritable variation in the survival of seedlings from Patagonian cypress marginal xeric populations coping with drought and extreme cold Aparicio, Alejandro Gabriel Zuki, Sebastián Maximiliano Pastorino, Mario Juan Martinez Meier, Alejandro Gallo, Leonardo Ariel Bosques Cupressus Adaptabilidad Adaptación al Cambio Climático Recursos Genéticos Forestales Forests Adaptability Climate Change Adaptation Forest Genetic Resources Ciprés Región Patagónica The rear edges of tree species have begun to be perceived as highly valuable for genetic resources conservation and management. In view of expected climatic changes, the responses of trees at their xeric limits may largely be determined by their capacity to cope with augmented environmental variance.We assess the heritability of early survival of Patagonian cypress in two common-garden field tests with contrasting summer water deficits, comprising 140 and 163 open-pollinated families from 10 marginal xeric populations. The first experiment underwent less rigorous conditions than the average mesic, Mediterranean climatic conditions, which were sufficient to reveal additive genetic effects of summer drought on seedling survival. The second trial suffered strong summer water-deficit stress and a winter extreme cold event. In this harsher environment, the heritabilities of survival under summer water-deficit stress were high in all the populations (h200.84 on average), while the heritabilities of seasonal, extreme cold survival were moderate or even nil (h200.28 on average). We did not find evidence of genetic differentiation among populations in their capabilities to survive droughts and cold extremes. Our results indicate that even when climatic changes were strong enough to cause the extinction of the most threatened populations, heritable variation for traits underlying drought and cold tolerances may allow the marginal xeric edge of cypress to persist under augmented environmental variance, without losing overall genetic diversity. Estación Experimental Agropecuaria Bariloche Fil: Aparicio, Alejandro Gabriel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Área de Recursos Forestales. Grupo de Genética Ecológica y Mejoramiento Forestal; Argentina Fil: Zuki, Sebastián Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Pastorino, Mario Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Martinez Meier, Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Área de Recursos Forestales. Grupo de Ecología Forestal; Argentina Fil: Gallo, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Área de Recursos Forestales. Grupo de Genética Ecológica y Mejoramiento Forestal; Argentina 2020-05-12T12:27:11Z 2020-05-12T12:27:11Z 2012-01 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/7223 https://link.springer.com/article/10.1007/s11295-011-0465-4 1614-2942 https://doi.org/10.1007/s11295-011-0465-4 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 Tree Genetics & Genomes 8 : 801-810 (Enero 2012) |
| spellingShingle | Bosques Cupressus Adaptabilidad Adaptación al Cambio Climático Recursos Genéticos Forestales Forests Adaptability Climate Change Adaptation Forest Genetic Resources Ciprés Región Patagónica Aparicio, Alejandro Gabriel Zuki, Sebastián Maximiliano Pastorino, Mario Juan Martinez Meier, Alejandro Gallo, Leonardo Ariel Heritable variation in the survival of seedlings from Patagonian cypress marginal xeric populations coping with drought and extreme cold |
| title | Heritable variation in the survival of seedlings from Patagonian cypress marginal xeric populations coping with drought and extreme cold |
| title_full | Heritable variation in the survival of seedlings from Patagonian cypress marginal xeric populations coping with drought and extreme cold |
| title_fullStr | Heritable variation in the survival of seedlings from Patagonian cypress marginal xeric populations coping with drought and extreme cold |
| title_full_unstemmed | Heritable variation in the survival of seedlings from Patagonian cypress marginal xeric populations coping with drought and extreme cold |
| title_short | Heritable variation in the survival of seedlings from Patagonian cypress marginal xeric populations coping with drought and extreme cold |
| title_sort | heritable variation in the survival of seedlings from patagonian cypress marginal xeric populations coping with drought and extreme cold |
| topic | Bosques Cupressus Adaptabilidad Adaptación al Cambio Climático Recursos Genéticos Forestales Forests Adaptability Climate Change Adaptation Forest Genetic Resources Ciprés Región Patagónica |
| url | http://hdl.handle.net/20.500.12123/7223 https://link.springer.com/article/10.1007/s11295-011-0465-4 https://doi.org/10.1007/s11295-011-0465-4 |
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