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Transgenerational and Within-Generation Plasticity in Response to Climate Change: Insights from a Manipulative Field Experiment across an Elevational Gradient.
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- Author(s): Wadgymar, Susana M.; Mactavish, Rachel M.; Anderson, Jill T.
- Source:
American Naturalist; Dec2018, Vol. 192 Issue 6, p698-714, 17p, 1 Color Photograph, 1 Diagram, 5 Graphs- Subject Terms:
- Source:
- Additional Information
- Alternate Title: Plasticidad transgeneracional e intrageneracional en respuesta a los cambios climáticos: Resultados de un experimento de campo manipulativo a través de un gradiente de elevación. (German)
- Abstract: Parental environmental effects—or transgenerational plasticity—can influence an individual's phenotype or fitness yet remain underexplored in the context of global change. Using the perennial self-pollinating plant Boechera stricta , we explored the effects of climate change on transgenerational and within-generation plasticity in dormancy, germination, growth, and survival. We first conducted a snow removal experiment in the field, in which we transplanted 16 families of known origin into three common gardens at different elevations and exposed half of the siblings to contemporary snow dynamics and half to early snow removal. We planted the offspring of these individuals in a factorial manipulation of temperature and water level in the growth chamber and reciprocally transplanted them across all parental environments in the field. The growth chamber experiment revealed that the effects of transgenerational plasticity persist in traits expressed after establishment, even when accounting for parental effects on seed mass. The field experiment showed that transgenerational and within-generation plasticity can interact and that plasticity varies clinally in populations distributed across elevations. These findings demonstrate that transgenerational plasticity can influence fitness-related traits and should be incorporated in studies of biological responses to climate change. [ABSTRACT FROM AUTHOR]
- Abstract: Los efectos ambientales parentales, o la plasticidad transgeneracional, pueden influir en el fenotipo y la adecuación (fitness) de un individuo, pero permanecen poco estudiados en el contexto de los cambios climáticos. Utilizando la planta perenne y de autofecundación, Boechera stricta , exploramos los efectos del cambio climático sobre la plasticidad transgeneracional e intrageneracional en la dormancia, la germinación, el crecimiento y la supervivencia. Primero realizamos un experimento de remoción de la nieve en el campo, en el que trasplantamos 16 familias de origen conocido en tres jardines comunes a diferentes elevaciones. Expusimos la mitad de los individuos a las dinámicas contemporáneas de nieve y la otra mitad a la eliminación temprana de la nieve. Plantamos a los descendientes de estos individuos siguiendo una manipulación factorial de temperatura y nivel de agua en el laboratorio, y los trasplantamos recíprocamente a través de todos los ambientes paternales en el campo. El experimento controlado en el laboratorio reveló que los efectos de la plasticidad transgeneracional persisten en rasgos expresados después del establecimiento, incluso cuando se contabilizan los efectos paternos en el peso de la semilla. El experimento de campo mostró que la plasticidad transgeneracional e intrageneracional pueden interactuar y que la plasticidad varía de forma clinal en las poblaciones distribuidas a través de las elevaciones. Estos hallazgos demuestran que la plasticidad transgeneracional puede influir en los rasgos relacionados con la adecuación y debe ser incorporada en estudios de respuestas biológicas al cambio climático. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of American Naturalist is the property of University of Chicago and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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