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Fig. 4 | BMC Plant Biology

Fig. 4

From: N-3-oxo-octanoyl-homoserine lactone-mediated priming of resistance to Pseudomonas syringae requires the salicylic acid signaling pathway in Arabidopsis thaliana

Fig. 4

Changes in defense enzyme activities in Arabidopsis after 3OC8-HSL pretreatment and PstDC3000 infection. The roots of Arabidopsis plants grown in a sterile systemic hydroponic system were treated with 10 μM 3OC8-HSL for 48 h, and the leaves were spray-inoculated with PstDC3000 (OD600 = 0.1). The seedlings were collected at 24 hpi and frozen in liquid N2. The frozen tissue (100 mg) was used to detect enzyme activity. a, Change in POD activity. b, Change in CAT activity. c, Change in SOD activity. d, Change in PAL activity. Values are means ±SD of three independent experiments. Different letters indicate statistically significant differences (P < 0.05, Duncan’s test)

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