Polymorphisms associated to climatic variables.

a TAIR-ID of the A. thaliana orthologue; c = candidate gene (* after Ometto et al. 2012); nc = non-candidate (neutral) gene.b Relative position of the SNP in the alignment.c SNPs could be at non-coding intronic sites (noncod), synonymous sites (syn), or non-synonymous sites (nonsyn). For the latter, the two alternative aminoacids (abbreviated using the one letter standard code) are given in brackets.d Frequency of the SNP minor allele in each population. Populations are sorted along the longitudinal gradient and identified using the codes given in S1 Table.e Results of the association test (performed by TASSEL) between mean rainfall precipitation during spring and summer and frequency of the allelic variants at the SNP: numbers identify the population clusters K estimated by STRUCTURE at which the association was statistically significant (P K tested ranged from 2 to 5).Polymorphisms associated to climatic variables.