Fig. 5. NtCOMT1 in NtCOMT1 responsible for phytomelatonin biosynthesis confers drought tolerance in Nicotiana tabacum

Fig. 5. NtCOMT1 gene expression profiles in different tissues (A) and under abiotic stresses (B). Growth of NtCOMT1 overexpressing lines, WT, and OE-Empty tobacco after drought treatment for 9 days (C). Expression levels in different tissues are shown: root, stem, leaf, flower, and fruit. Expression levels under cold stress (3h, 6h, and 24h), heat stress (3h, 6h, and 9h), drought stress (1day, 5day, and 9day), and cadmium stress treatment (1day, 4day, and 7day). Data represent mean ± SE of three independent biological replicates. Asterisks indicate statistically significant differences determined using Student' s t-test (**, p <0.01; ***, p <0.001).