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 < 0.05 after correcting for multiple testing; K tested ranged from 2 to 5).
Polymorphisms associated to climatic variables.