Fig. 6From: Carbon monoxide is involved in melatonin-enhanced drought resistance in tomato seedlings by enhancing chlorophyll synthesis pathwayEffects of MT, CO, MT + CO, and MT + Hb on the level of heme (a) and the expression of SlFECH(b) in tomato seedlings under drought stress. The data are the average of three replicates and are presented as means ± SE. Different letters indicate significant differences at P < 0.05 according to Duncan’s multiple range testsBack to article page