Morpho-physiological responses of Nothofagus obliqua to light intensity and water status, with focus on primary growth dynamics
Primary growth affects plant plasticity by influencing the number, spatial arrangement and time of differentiation of the leaves. For Nothofagus obliqua, we evaluated if primary shoot growth dynamics determines short-term responses to environmental conditions, and intra-individual variations in such...
| Autores principales: | , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Springer Nature
2019
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/4210 https://link.springer.com/article/10.1007/s00468-018-1712-1 https://doi.org/10.1007/s00468-018-1712-1 |
| _version_ | 1855483388203368448 |
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| author | Torres, Cristian Daniel Magnin, Amaru Varela, Santiago Agustin Stecconi, Marina Grosfeld, Javier Edgardo Puntieri, Javier Guido |
| author_browse | Grosfeld, Javier Edgardo Magnin, Amaru Puntieri, Javier Guido Stecconi, Marina Torres, Cristian Daniel Varela, Santiago Agustin |
| author_facet | Torres, Cristian Daniel Magnin, Amaru Varela, Santiago Agustin Stecconi, Marina Grosfeld, Javier Edgardo Puntieri, Javier Guido |
| author_sort | Torres, Cristian Daniel |
| collection | INTA Digital |
| description | Primary growth affects plant plasticity by influencing the number, spatial arrangement and time of differentiation of the leaves. For Nothofagus obliqua, we evaluated if primary shoot growth dynamics determines short-term responses to environmental conditions, and intra-individual variations in such responses. Before bud-break, saplings were located in experimental conditions, combining two light treatments with two water supply treatments. For each individual, morphology, relative extension rate (RER), and relative leaf chlorophyll content (SPAD units) were registered for the annual shoot derived from the most distal bud of two axis categories: the main axis (trunk) and a main branch. For trunk shoots, we analysed the net photosynthetic rate at saturating photosynthetic photon flux density (Psat) of proximal and distal leaves. Shaded trees had higher RER, longer and more slender shoots, longer internodes, and higher leaf chlorophyll content than unshaded trees. The number of nodes was affected by water condition in trunk shoots, and by light condition in main branch shoots. Full sunlight stimulated the development of a branch following the length and growth direction of its parent shoot (relay branch). Shade would have promoted the development of neoformed leaves. Under shade and low water availability, water use efficiency was higher in distal than proximal leaves. Under high sunlight and water availability, leaves of relay branches presented slightly higher Psat with higher water loss than both proximal preformed leaves and distal leaves under the other tested conditions. This study highlights the need of assessing intra-individual variations in shoot acclimation in relation to axis differentiation. |
| format | Artículo |
| id | INTA4210 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Springer Nature |
| publisherStr | Springer Nature |
| record_format | dspace |
| spelling | INTA42102025-06-17T11:59:37Z Morpho-physiological responses of Nothofagus obliqua to light intensity and water status, with focus on primary growth dynamics Torres, Cristian Daniel Magnin, Amaru Varela, Santiago Agustin Stecconi, Marina Grosfeld, Javier Edgardo Puntieri, Javier Guido Nothofagus Plasticidad Plasticity Light Environmental Factors Luz Factores Ambientales Nothofagus obliqua Primary growth affects plant plasticity by influencing the number, spatial arrangement and time of differentiation of the leaves. For Nothofagus obliqua, we evaluated if primary shoot growth dynamics determines short-term responses to environmental conditions, and intra-individual variations in such responses. Before bud-break, saplings were located in experimental conditions, combining two light treatments with two water supply treatments. For each individual, morphology, relative extension rate (RER), and relative leaf chlorophyll content (SPAD units) were registered for the annual shoot derived from the most distal bud of two axis categories: the main axis (trunk) and a main branch. For trunk shoots, we analysed the net photosynthetic rate at saturating photosynthetic photon flux density (Psat) of proximal and distal leaves. Shaded trees had higher RER, longer and more slender shoots, longer internodes, and higher leaf chlorophyll content than unshaded trees. The number of nodes was affected by water condition in trunk shoots, and by light condition in main branch shoots. Full sunlight stimulated the development of a branch following the length and growth direction of its parent shoot (relay branch). Shade would have promoted the development of neoformed leaves. Under shade and low water availability, water use efficiency was higher in distal than proximal leaves. Under high sunlight and water availability, leaves of relay branches presented slightly higher Psat with higher water loss than both proximal preformed leaves and distal leaves under the other tested conditions. This study highlights the need of assessing intra-individual variations in shoot acclimation in relation to axis differentiation. Estación Experimental Agropecuaria Bariloche. Área Forestal. Grupo de Ecología Forestal Fil: Torres, Cristian Daniel. Universidad Nacional del Comahue. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional de Río Negro. Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural; Argentina Fil: Magnin, Amaru. Universidad Nacional del Comahue. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional de Río Negro. Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural; Argentina Fil: Varela, Santiago Agustín. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Barilohe. Área Forestal. Grupo de Ecología Forestal; Argentina Fil: Stecconi, Marina. Universidad Nacional del Comahue. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina. Universidad Nacional de Río Negro. Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural; Argentina Fil: Grosfeld, Javier Edgardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico y Tecnológico Patagonia Norte; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina Fil: Puntieri, Javier G. Universidad Nacional de Río Negro. Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico y Tecnológico Patagonia Norte; Argentina 2019-01-04T12:42:11Z 2019-01-04T12:42:11Z 2018-10 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/4210 https://link.springer.com/article/10.1007/s00468-018-1712-1 1432-2285 https://doi.org/10.1007/s00468-018-1712-1 eng info:eu-repo/semantics/restrictedAccess application/pdf Springer Nature Trees. Structure and Function 32 (5) : 1301–1314 (Octubre 2018) |
| spellingShingle | Nothofagus Plasticidad Plasticity Light Environmental Factors Luz Factores Ambientales Nothofagus obliqua Torres, Cristian Daniel Magnin, Amaru Varela, Santiago Agustin Stecconi, Marina Grosfeld, Javier Edgardo Puntieri, Javier Guido Morpho-physiological responses of Nothofagus obliqua to light intensity and water status, with focus on primary growth dynamics |
| title | Morpho-physiological responses of Nothofagus obliqua to light intensity and water status, with focus on primary growth dynamics |
| title_full | Morpho-physiological responses of Nothofagus obliqua to light intensity and water status, with focus on primary growth dynamics |
| title_fullStr | Morpho-physiological responses of Nothofagus obliqua to light intensity and water status, with focus on primary growth dynamics |
| title_full_unstemmed | Morpho-physiological responses of Nothofagus obliqua to light intensity and water status, with focus on primary growth dynamics |
| title_short | Morpho-physiological responses of Nothofagus obliqua to light intensity and water status, with focus on primary growth dynamics |
| title_sort | morpho physiological responses of nothofagus obliqua to light intensity and water status with focus on primary growth dynamics |
| topic | Nothofagus Plasticidad Plasticity Light Environmental Factors Luz Factores Ambientales Nothofagus obliqua |
| url | http://hdl.handle.net/20.500.12123/4210 https://link.springer.com/article/10.1007/s00468-018-1712-1 https://doi.org/10.1007/s00468-018-1712-1 |
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