Arabidopsis thaliana has a small overall number of myosins compared to other eukaryotes, but a large number of class XI myosins.
Plant myosins are unlike myosins from any other organisms except algae. As a percentage of the total gene number, the number of myosins is small overall in Arabidopsis compared with the other sequenced eukaryotic genomes. There are, however, a large number of class XI myosins. The function of each myosin has yet to be determined.
Reddy et al. (Tue,) studied this question.