Fig. 1.

An unrooted maximum likelihood phylogenetic tree of the Cellulose synthase-like (Csl) gene family from Arabidopsis, maize, rice and wheat using FastTree (v2.1.10) according to Price et al. (35). Nodes with more than 70% support from 1000 bootstrap replications were considered significant and indicated by a black circle. Different colors represent CSL proteins from different species. The scale bar indicates a radial distance equal to 0.5 amino acid substitutions per site. To keep the gene family nomenclature uniform, maize gene models from Gramene were renamed as follows: Zm, first four digits of the locus number, Csl, and the class identifier as described in Schwerdt et al. (9)