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. 2017 Nov 30;7:16680. doi: 10.1038/s41598-017-16944-8

Figure 4.

Figure 4

Evolution of enzyme activity under drought stress before and after DBD plasma treatment. (a) SOD; (b) POD; and (c) CAT. The discharge voltage is 13.0 kV, and the DBD plasma treatment time is 4 min. Samples are collected on the 4th day of planting. Data are presented as the mean ± SD (n = 3). Different lower case letters (ad) indicate statistically significant differences at the P < 0.05 level).