Functional relationships between wood structure and vulnerability to xylem cavitation in races of Eucalyptus globulus differing in wood density
Wood density can be considered as a measure of the internal wood structure, and it is usually used as a proxy measure of other mechanical and functional traits. Eucalyptus is one of the most important commercial forestry genera worldwide, but the relationship between wood density and vulnerability...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Oxford University Press
2020
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/7218 https://academic.oup.com/treephys/article/38/2/243/4644574 https://doi.org/10.1093/treephys/tpx138 |
| _version_ | 1855483963781414912 |
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| author | Barotto, Antonio José Monteoliva, Silvia Estela Gyenge, Javier Martinez Meier, Alejandro Fernandez, María Elena |
| author_browse | Barotto, Antonio José Fernandez, María Elena Gyenge, Javier Martinez Meier, Alejandro Monteoliva, Silvia Estela |
| author_facet | Barotto, Antonio José Monteoliva, Silvia Estela Gyenge, Javier Martinez Meier, Alejandro Fernandez, María Elena |
| author_sort | Barotto, Antonio José |
| collection | INTA Digital |
| description | Wood density can be considered as a measure of the internal wood structure, and it is usually used as a proxy measure of other mechanical and functional traits. Eucalyptus is one of the most important commercial forestry genera worldwide, but the relationship
between wood density and vulnerability to cavitation in this genus has been little studied. The analysis is hampered by, among other
things, its anatomical complexity, so it becomes necessary to address more complex techniques and analyses to elucidate the way in
which the different anatomical elements are functionally integrated. In this study, vulnerability to cavitation in two races of Eucalyptus
globulus Labill. with different wood density was evaluated through Path analysis, a multivariate method that allows evaluation of
descriptive models of causal relationship between variables. A model relating anatomical variables with wood properties and functional parameters was proposed and tested. We found significant differences in wood basic density and vulnerability to cavitation
between races. The main exogenous variables predicting vulnerability to cavitation were vessel hydraulic diameter and fibre wall fraction.
Fibre wall fraction showed a direct impact on wood basic density and the slope of vulnerability curve, and an indirect and negative
effect over the pressure imposing 50% of conductivity loss (P50) through them. Hydraulic diameter showed a direct negative
effect on P50, but an indirect and positive influence over this variable through wood density on one hand, and through maximum
hydraulic conductivity (ks max) and slope on the other. Our results highlight the complexity of the relationship between xylem efficiency and safety in species with solitary vessels such as Eucalyptus spp., with no evident compromise at the intraspecific level. |
| format | Artículo |
| id | INTA7218 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | INTA72182020-05-11T14:37:58Z Functional relationships between wood structure and vulnerability to xylem cavitation in races of Eucalyptus globulus differing in wood density Barotto, Antonio José Monteoliva, Silvia Estela Gyenge, Javier Martinez Meier, Alejandro Fernandez, María Elena Madera Eucalyptus Globulus Productos Forestales Xilema Wood Forest Products Xylem Densidad de la Madera Wood density can be considered as a measure of the internal wood structure, and it is usually used as a proxy measure of other mechanical and functional traits. Eucalyptus is one of the most important commercial forestry genera worldwide, but the relationship between wood density and vulnerability to cavitation in this genus has been little studied. The analysis is hampered by, among other things, its anatomical complexity, so it becomes necessary to address more complex techniques and analyses to elucidate the way in which the different anatomical elements are functionally integrated. In this study, vulnerability to cavitation in two races of Eucalyptus globulus Labill. with different wood density was evaluated through Path analysis, a multivariate method that allows evaluation of descriptive models of causal relationship between variables. A model relating anatomical variables with wood properties and functional parameters was proposed and tested. We found significant differences in wood basic density and vulnerability to cavitation between races. The main exogenous variables predicting vulnerability to cavitation were vessel hydraulic diameter and fibre wall fraction. Fibre wall fraction showed a direct impact on wood basic density and the slope of vulnerability curve, and an indirect and negative effect over the pressure imposing 50% of conductivity loss (P50) through them. Hydraulic diameter showed a direct negative effect on P50, but an indirect and positive influence over this variable through wood density on one hand, and through maximum hydraulic conductivity (ks max) and slope on the other. Our results highlight the complexity of the relationship between xylem efficiency and safety in species with solitary vessels such as Eucalyptus spp., with no evident compromise at the intraspecific level. Estación Experimental Agropecuaria Bariloche Fil: Barotto, Antonio José. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Monteoliva, Silvia Estela. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Gyenge, Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Agencia de Extensión Rural Tandil. Consejo Nacional de Investigaciones Cientificas y Técnicas; 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: Fernandez, Maria Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Agencia de Extensión Rural Tandil. Consejo Nacional de Investigaciones Cientificas y Técnicas; Argentina 2020-05-11T14:28:06Z 2020-05-11T14:28:06Z 2018-02 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/7218 https://academic.oup.com/treephys/article/38/2/243/4644574 1758-4469 https://doi.org/10.1093/treephys/tpx138 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 Oxford University Press Tree Physiology 38 (2) : 243-251 (Febrero 2018) |
| spellingShingle | Madera Eucalyptus Globulus Productos Forestales Xilema Wood Forest Products Xylem Densidad de la Madera Barotto, Antonio José Monteoliva, Silvia Estela Gyenge, Javier Martinez Meier, Alejandro Fernandez, María Elena Functional relationships between wood structure and vulnerability to xylem cavitation in races of Eucalyptus globulus differing in wood density |
| title | Functional relationships between wood structure and vulnerability to xylem cavitation in races of Eucalyptus globulus differing in wood density |
| title_full | Functional relationships between wood structure and vulnerability to xylem cavitation in races of Eucalyptus globulus differing in wood density |
| title_fullStr | Functional relationships between wood structure and vulnerability to xylem cavitation in races of Eucalyptus globulus differing in wood density |
| title_full_unstemmed | Functional relationships between wood structure and vulnerability to xylem cavitation in races of Eucalyptus globulus differing in wood density |
| title_short | Functional relationships between wood structure and vulnerability to xylem cavitation in races of Eucalyptus globulus differing in wood density |
| title_sort | functional relationships between wood structure and vulnerability to xylem cavitation in races of eucalyptus globulus differing in wood density |
| topic | Madera Eucalyptus Globulus Productos Forestales Xilema Wood Forest Products Xylem Densidad de la Madera |
| url | http://hdl.handle.net/20.500.12123/7218 https://academic.oup.com/treephys/article/38/2/243/4644574 https://doi.org/10.1093/treephys/tpx138 |
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