Fine-scale empirical data on niche divergence and homeolog expression patterns in an allopolyploid and its diploid progenitor species
Cite this dataset
Akiyama, Reiko et al. (2020). Fine-scale empirical data on niche divergence and homeolog expression patterns in an allopolyploid and its diploid progenitor species [Dataset]. Dryad. https://doi.org/10.5061/dryad.4qrfj6q8h
Abstract
- Polyploidization is pervasive in plants, but little is known about the niche divergence of wild allopolyploids (species that harbor polyploid genomes originating from different diploid species) relative to their diploid progenitor species and the gene expression patterns that may underlie such ecological divergence. We conducted a fine-scale empirical study on habitat and gene expression of an allopolyploid and its diploid progenitors.
- We quantified soil properties and light availability of habitats of an allotetraploid Cardamine flexuosa and its diploid progenitors C. amara and C. hirsuta in two seasons. We analyzed expression patterns of genes and homeologs (homeologous gene copies in allopolyploids) using RNA-seq.
- We detected niche divergence between the allopolyploid and its diploid progenitors along water availability gradient at a fine scale: the diploids in opposite extremes and the allopolyploid in a broader range between diploids, with limited overlap with diploids at both ends. Most of the genes whose homeolog expression ratio changed among habitats in C. flexuosa varied spatially and temporally.
- These findings provide empirical evidence for niche divergence between an allopolyploid and its diploid progenitor species at a fine scale and suggest that divergent expression patterns of homeologs in an allopolyploid may underlie its persistence in diverse habitats.
Methods
The data was collected manually at study sites (Figure 1) and used for principal component analysis (Figure 2), logistic regressions (Table 1), and plotting (Figures 3, S2, and S4).
Usage notes
Data on soil properties and light availability of Cardamine sites in Switzerland analysed in the study. README sheet explains the structure of the data in Dryad_Cardamine_habitat_data.xlsx
Funding
Swiss National Science Foundation, Award: 31003A_182318
Swiss National Science Foundation, Award: 31003A_159767
University Research Priority Programs, Evolution in Action of the University of Zurich
Swiss National Science Foundation Marie-Heim Hoegtlin grant, Award: PMPD3_134200
International Human Frontier Science Program Organization
Japan Science and Technology Agency, Core Research for Evolutionary Science and Technology, Award: JPMJCR16O3
Indo-Swiss Collaboration in Biotechnology
Japan Society for the Promotion of Science, Award: 16H06469
Japan Society for the Promotion of Science, Award: 18H04785
Japan Society for the Promotion of Science, Award: 26113709
Japan Society for the Promotion of Science, Award: 16H01463
Swiss National Science Foundation, Award: 31003A_182318
Swiss National Science Foundation Marie-Heim Hoegtlin grant, Award: PMPD3_134200
Indo-Swiss Collaboration in Biotechnology