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Schematic model of the molecular regulation mechanisms of Mg distribution, photosynthesis regulation and antioxidant regulation underlying the response to Mg deficiency in leaves of tobacco seedlings. SODs, superoxide dismutases; CAT2, catalase; PODs, peroxidases; Prxs, peroxiredoxins; GSH, glutathione; GSTs, glutathione S-transferases. Red and green backgrounds indicate that the genes were up-regulated and down-regulated, respectively.
