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Effects of two centuries of global environmental variation on phenology and physiology of Arabidopsis thaliana

Victoria L. DeLeo, Duncan N. L. Menge, Ephraim M. Hanks, Thomas E. Juenger, Jesse R. Lasky
doi: https://doi.org/10.1101/424242
Victoria L. DeLeo
1Huck Institutes of the Life Sciences | Plant Biology Pennsylvania State University University Park, PA 16802
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  • For correspondence: vldeleo@psu.edu
Duncan N. L. Menge
4Department of Ecology, Evolution, and Environmental Biology Columbia University New York, NY 10027
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Ephraim M. Hanks
5Department of Statistics Pennsylvania State University University Park, PA 16802
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Thomas E. Juenger
6Department of Integrative Biology University of Texas at Austin Austin, TX 78712
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Jesse R. Lasky
3Department of Biology Pennsylvania State University University Park, PA 16802
4Department of Ecology, Evolution, and Environmental Biology Columbia University New York, NY 10027
7Earth Institute Columbia University New York, NY 10025
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Abstract

Intraspecific diversity arises from genetic and plastic responses to the environment. Immense natural history collections allow comprehensive surveys of intraspecific diversity across a species range through centuries of environmental variation. Using 216 years of Arabidopsis thaliana samples, we tested if traits exhibit coordinated variation and hypothesized adaptive responses to climate gradients. We used spatially varying coefficient models to quantify region-specific trends. Traits generally showed little coordination. However, C:N was low for summer versus spring-collected plants, consistent with a life history-physiology axis from slow-growing winter annuals to fast-growing spring/summer annuals. Collection date was later in more recent years in many regions, possibly because these populations shifted toward more spring (as opposed to fall) germination. δ15N decreased over time across most of the range, consistent with predictions based on anthropogenic changes. Regional heterogeneity in phenotype trends indicates complex responses to spatial and temporal climate shifts potentially arising from variation in local adaptation and plasticity.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted September 23, 2018.
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Effects of two centuries of global environmental variation on phenology and physiology of Arabidopsis thaliana
Victoria L. DeLeo, Duncan N. L. Menge, Ephraim M. Hanks, Thomas E. Juenger, Jesse R. Lasky
bioRxiv 424242; doi: https://doi.org/10.1101/424242
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Effects of two centuries of global environmental variation on phenology and physiology of Arabidopsis thaliana
Victoria L. DeLeo, Duncan N. L. Menge, Ephraim M. Hanks, Thomas E. Juenger, Jesse R. Lasky
bioRxiv 424242; doi: https://doi.org/10.1101/424242

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