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Directional and stabilizing selection shaped morphological, reproductive, and physiological traits of the invader Solidago canadensis (Dataset)
| Content Provider | Dryad |
|---|---|
| Author | Du, Leshan Oduor, Ayub Zuo, Wei Liu, Haiyan Li, Junmin |
| Abstract | Trait evolution in invasive plant species is important because it can impact demographic parameters key to invasion success. Invasive plant species often show phenotypic clines along geographic and climatic gradients. However, the relative contributions of natural selection and neutral evolutionary processes to phenotypic trait variation among populations of invasive plants remains unclear. A common method to assess whether a trait has been shaped by natural selection or neutral evolutionary processes is to compare the geographical pattern for the trait of interest to the divergence in neutral genetic loci (i.e., QST-FST comparisons). A redundancy analysis (RDA) can facilitate identification of putative agents of natural selection on the trait. Here, we employed both a QST-FST comparisons approach and RDA to infer whether natural selection shaped traits of invasive populations of S. canadensis in China and identify the potential environmental drivers of natural selection. We addressed two questions: (1) Does natural selection drive phenotypic trait variation among S. canadensis populations? (2) Do climatic, latitudinal, longitudinal, and altitudinal gradients drive patterns of genetic variation among S. canadensis populations? We found significant directional selection for several morphological and reproductive traits (i.e., QST >FST) and stabilizing selection for physiological traits (i.e., QST < FST). The RDA showed that stem biomass of S. canadensis was strongly positively correlated with longitude, while leaf width ratio and specific leaf area were significantly positively correlated with mean diurnal range. Stem biomass had a strong negative correlation with annual precipitation. Moreover, height of S. canadensis individuals was strongly positively correlated with altitude and precipitation of the wettest quarter. Precipitation seasonality that was associated with longitudinal shift in China likely selected for larger stem biomass in S. canadensis. Overall, these results suggest that longitudinal and altitudinal clines in climate exerted strong selection pressures that shaped phenotypic traits of S. canadensis. |
| File Size | 1284955 |
| File Format | HTM / HTML |
| ISSN | 20457758 |
| DOI | 10.5061/dryad.9w0vt4bn0 |
| Alternate Webpage(s) | https://datadryad.org/stash/downloads/file_stream/2461427 |
| Alternate Webpage(s) | https://datadryad.org/stash/downloads/file_stream/2461426 |
| Alternate Webpage(s) | https://datadryad.org/stash/downloads/file_stream/2902840 |
| Alternate Webpage(s) | https://datadryad.org/stash/downloads/file_stream/2902846 |
| Language | English |
| Publisher Date | 2023-08-03 |
| Access Restriction | Open |
| Subject Keyword | Common Garden Genetic Differentiation Local Adaption Phenotypic Differentiation Nature and Landscape Conservation Ecology Behavior and Systematics |
| Content Type | Text |
| Resource Type | Data Set |
| Subject | Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation |
