Ranges of identity percentages calculated for both the nucleotide and the amino acid sequences of profilins in the species analysed.

It also includes the data corresponding to the accumulated percentage for the comparisons between families. When comparing species, nucleotide sequence identity varied from 70.2% (C. avellana×Z. mays) to 100%, whereas identities in the amino acid sequences ranged from 71.9% (B. pendula×Z. mays) to 100%. The higher range of intra- specific variability was that of the Olea europaea L. nucleotide sequences (28.2%), whereas the profilin nucleotide sequences of Betula pendula showed the shorter range of variability (0.5%). Among the families, the percentage of nucleotide identity varied from 70.2% (Betulaceae×Poaceae) to 100% in several cases, while the percentages applied to the amino acid sequences ranged from 74.2% (Oleaceae×Poaceae) also to 100%. Intra- family variability in the nucleotide sequences ranged from 28.2% (Oleaceae) to 20.1% (Poaceae).