Fig. 5.

Schematic representation showing the expression of the different genes known to be involved in ovule development in A. thaliana and what is known so far in Gnetum spp. Information on seedless plants (ferns, lycophytes or mosses) was included when available for reproductive structures . MADS-box gene data (A) are based on Ray et al. (1994), Becker et al. (2002), Losa et al. (2010) and Pabón-Mora et al., 2014. WUSCHEL data (B) are based on Gross-Hardt et al. (2002) and Nardmann et al. (2009). Yellow stars pointing to duplication events in each gene lineage.