Figure 1.

Phylogenetic relationships of dirigent and dirigent-like protein from Medicago truncatula, Arabidopsis thaliana, Picea sitchensis, Oryza sativa, Hordeum vulgare and Triticum aestivum. The scale bar indicates an evolutionary distance of 1 amino acid substitution per position. The different subfamilies are indicated with different branch colours (according to [28]). Only bootstrap values >0.90 are indicated (small gray circle) for visual clarity. At: A. thaliana, P: P. sitchensis, Ta: T. aestivum, Hv: H. vulgare, Os: O. sativa. The accession numbers used to build the tree are indicated in the Materials and Methods section.