Data from: Genomic evidence for the parallel evolution of coastal forms in the Senecio lautus complex

Phylogenetic analysis of a broad selection of Senecio species showed that members of the S. lautus complex form a distinct lineage that has diversified recently in Australasia. An inspection of thousands of polymorphisms in the genome of 27 natural populations from the S. lautus complex in Australia revealed a signal of strong genetic structure independent of habitat and phenotype. Additionally, genetic differentiation between populations was correlated with the geographical distance separating them, and the genetic diversity of populations strongly depended on geographical location.

Importantly, coastal forms appeared in several independent phylogenetic clades, a pattern that is consistent with the parallel evolution of these forms. Analyses of the patterns of genomic differentiation between populations further revealed that adjacent populations displayed greater genomic heterogeneity than allopatric populations and are differentiated according to variation in soil composition. These results are consistent with a process of parallel ecotypic divergence in face of gene flow.

Usage notes

Category_SNPs FET Fst Consensus_sequences_RADs Consensus_sequences Frequency Consensus_sequences_RADs-2 This fasta file contains consensus sequences derived from RADs genotyping of neutral loci in 29 S. lautus populations and the close relative S. madagascariensis. These sequences were used to construct the rooted phylogeny presented in Figure 2B of the manuscript.