Results and discussion
Natural variation of wild species provides a relevant complementary
resource to discover novel gene functions. It has been proven thatA. thaliana demes from the north-east of Spain harbor high
genetic diversity [35] and they have a great potential for studying
traits related to adaptation (e.g. [36]) and allelic variants that
specifically interact with the environment (e.g. [37]). Teréset al. [5] selected two demes with contrasting phenotypes in
soil carbonate tolerance, A1(c+) and
T6(c-), and performed several studies to characterize
the physiological mechanisms activated by these demes under carbonate
and iron-deficiency stress.