-ROS-POD- System under Different Xylogenesis Scenarios in Karelian Birch Roth var. carelica (Mercl.) Hämet-Ahti).

Background: We studied which regulated superoxide radical / hydrogen peroxide ratio together with peroxidase (POD) activity and genes expression under different ways of apical meristem development during the xylem structural elements' formation in unique woody plants var. pendula with straight-grained wood and var. carelica with figured wood.