Multi-trait genetic variation in resource-use strategies and phenotypic plasticity correlates with local climate across the range of a Mediterranean oak (Quercus faginea)
| Autor: | Aida Solé‐Medina, Juan José Robledo‐Arnuncio, José Alberto Ramírez‐Valiente |
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| Přispěvatelé: | British Ecological Society, CSIC - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Solé-Medina, Aida [0000-0001-6681-2747], Robledo-Arnuncio, Juan José [0000-0002-3909-8928], Ramírez-Valiente, José Alberto [0000-0002-5951-2938], Solé-Medina, Aida, Robledo-Arnuncio, Juan José, Ramírez-Valiente, José Alberto |
| Rok vydání: | 2021 |
| Předmět: |
Trait coordination
Drought Population genetics Physiology Local adaptation Leaf morphology Genetic Variation Water Plant Science Phenotypic plasticity Growth Drought tolerance Resource-use strategies Adaptation Physiological Quercus Phenotype FOS: Biological sciences Phenotyipic plasticity Divergent evolution Quercus faginea |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| DOI: | 10.5281/zenodo.5831496 |
| Popis: | 17 Pág. Resource-use strategies are hypothesized to evolve along climatic gradients. However, our understanding of the environmental factors driving divergent evolution of resource-use strategies and the relationship between trait genetic variation and phenotypic plasticity is far from complete. Using the Mediterranean tree Quercus faginea as study system, we tested the hypothesis that a conservative resource-use strategy with increased drought tolerance and reduced phenotypic plasticity has evolved in areas with longer and more severe dry seasons. We conducted a glasshouse experiment in which we measured leaf morphological, physiological, growth and allocation traits in seedlings from 10 range-wide climatically contrasting populations, grown under two different watering treatments. Both univariate and multivariate analyses revealed a genetic gradient of resource-use strategies and phenotypic plasticity associated with provenance climate. In particular, populations from harsher (drier and colder) environments had more sclerophyllous leaves, lower growth rates, better physiological performance under dry conditions and reduced multi-trait phenotypic plasticity compared to populations from more mesic and milder environments. Our results suggest that contrasting precipitation and temperature regimes play an important role in the adaptive intraspecific evolution of multivariate phenotypes and their plasticity, resulting in coordinated morphology, physiology, growth and allometry according to alternative resource-use strategies. This work was funded by the British Ecological Society (SR16/1360) and an OPPORTUNITY (2nd call) grant from the EVOLTREE network awarded to JAR-V. AS-M was supported by a PhD grant from the Subdirección General de Investigación y Tecnología of the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (FPI-SGIT2016-01). |
| Databáze: | OpenAIRE |
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