Leaf economics guides slow-fast adaptation across the geographic range of A. thaliana
| Autor: | Sartori, Kevin F. R., Vasseur, François, Violle, Cyrille, Baron, Etienne, Gerard, Marianne, Rowe, Nick, Ayala-Garay, Oscar Javier, Christophe, Ananda, Garcia De Jalon, Laura, Masclef, Diane, Harscouet, Erwan, Del Rey Granado, Maria, Chassagneux, Agathe, Kazakou, Elena, Vile, Denis |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Biodiversity and Ecology
adaptation au climat Vegetal Biology Eco-physiological trade-off Genetic differentiation Intraspecific variability Plant adaptation Plant functional trait Plant performance caractère fonctionnel Biodiversité et Ecologie fungi arabidopsis thaliana food and beverages variabilité intraspécifique différenciation génétique Biologie végétale |
| Zdroj: | Leaf economics guides slow-fast adaptation across the geographic range of A. thaliana, BioRxiv(2018) |
| Popis: | The slow-fast continuum describes how resource allocation constrains life-history strategies in many organisms. In plants, it is reflected by a trade-off at the leaf level between the rate of carbon assimilation and lifespan, the so-called Leaf Economics Spectrum (LES). However, it is still unclear how the LES is connected to the slow-fast syndrome, and reflects adaptation to climate. Here, we measured growth, morpho-physiological and life-history traits at both leaf and whole-plant levels in 384 natural accessions of Arabidopsis thaliana. We examined the extent to which the LES continuum parallels the slow-fast continuum, and compared trait variation to neutral genetic differentiation between lineages. We found that the LES is tightly linked to variation in whole-plant functioning, relative growth rate and life history. A genetic analysis further suggested that phenotypic differentiation is linked to the evolution of different slow-fast strategies in contrasted climates. Together, our findings shed light on the physiological bases of the slow-fast continuum, and its role for plant adaptation to climate. |
| Databáze: | OpenAIRE |
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