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Fig. 5 | BMC Plant Biology

Fig. 5

From: Exogenous melatonin improves the salt tolerance of cotton by removing active oxygen and protecting photosynthetic organs

Fig. 5

The effect of melatonin on the generation H2O2 and \( {\mathrm{O}}_2^{\cdotp -} \) in the leaves of cotton seedlings under salt stress. The leaves of seedlings were treated with control (CK), salt-treated (S), S + MT50, S + MT100, S + MT200, and S + MT500 for 72 h. After treatment, the leaves were excised and supplied DAB or NBT for 7 h. Control (CK) and salt-treated (S) plants were sprayed with distilled water, while S + MT50, S + MT100, S + MT200, and S + MT500 plants were sprayed with 50, 100, 200, and 500 μM MT, respectively. Different lowercase letters indicate significant differences at the p ≤ 0.05 level

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