Fig. 1From: Genome-wide identification and classification of MIKC-type MADS-box genes in Streptophyte lineages and expression analyses to reveal their role in seed germination of orchidThe corresponding number of type I, type II and total MADS-box genes for each plant species identified in this study. The tree topology reflects a consensus of plant phylogenies [32]. The ‘?’ indicates that the genes contained an M domain, but shared low identity with other MADS-box proteins in higher plantsBack to article page