Fig. 6From: Genome-wide identification and analysis of class III peroxidases in Betula pendulaSynteny map of POD family genes between B. pendula and three representative species. Gray lines indicate all syntenic blocks among birch linkage groups or between birch and the other species. In three species, collinear pairs of BpPODs are connected by green, blue and orange lines. Syntenic maps of birch associated with three representative species were visualized by MCScanXBack to article page