Figure 4. Conservation of serine and threonine residues of PSKR1 orthologues (left symbol) and PSKR2 orthologues (right symbol) in positions aligning with PSKR1 phosphorylation sites.

A dot indicates a conserved substitution of the respective residue by serine, threonine or tyrosine;–indicates no conservation, and + indicates a conserved P site. The species tree used in the present study was constructed by modifying the Phytozome version 10 plant tree of life.