Publication of this article was funded in part by the University of Florida Open-Access publishing Fund. In addition, requestors receiving funding through the UFOAP project are expected to submit a post-review, final draft of the article to UF's institutional repository, IR@UF, (www.uflib.ufl.edu/UFir) at the time of funding. The institutional Repository at the University of Florida community, with research, news, outreach, and educational materials. ; Qi et al. BMC Evolutionary Biology 2013, 13:143 http://www.biomedcentral.com/1471-2148/13/143; Pages 1-13; doi:10.1186/1471-2148-13-143 Cite this article as: Qi et al.: Phylogeny and evolutionary history of glycogen synthase kinase 3/SHAGGY-like kinase genes in land plants. BMC Evolutionary Biology 2013 13:143.