Fig. 3From: Comparative physiological responses and transcriptome analysis reveal the roles of melatonin and serotonin in regulating growth and metabolism in Arabidopsisa-d Effects of melatonin and serotonin on photosynthesis. a Fv/Fm, b ΦPSII, c the PQ pool redox status, and d NPQ were measured in soil-grown Col-0 plants sprayed with DMSO (solvent control) or 10 or 50 μM melatonin or serotonin for 6 h. n = 8. Error bars represent SE. Different letters indicate significantly different values (P < 0.05 by Tukey’s test)Back to article page