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. 2021 Jan 15;11:612299. doi: 10.3389/fpls.2020.612299

FIGURE 8.

FIGURE 8

Contents of polyphenols: caffeic acid (A), 4-O-caffeoylquinic acid (B), 5-O-caffeoylquinic acid (C), 3,4-O-dicaffeoylquinic acid (D), luteolin (E), luteolin-glucoside (F), and feruloylquinic acid (G) in the leaves of Eclipta prostrata inoculated with arbuscular mycorrhiza or not inoculated under non-stress and moderate (100 mM NaCl) and high saline (200 mM NaCl) conditions 4 and 8 weeks after inoculation. Each bar shows the mean ± standard deviation (n = 3). Different regular and capital letters indicate significant differences among treatments 4 and 8 weeks after inoculation, respectively, according to the Tukey test (P < 0.05). +, ++, +++ Indicate significant differences between the same treatments 4 and 8 weeks after inoculation at P < 0.05, P < 0.01, and P < 0.001, respectively, according to the two-tailed test. ns, non-significant. *, **, ***, significant differences at P < 0.05, 0.01, 0.001. AMF, arbuscular mycorrhizal fungi. M, mycorrhizal inoculation effect. S, salt stress effect. M × S, the interaction between mycorrhizal inoculation and salt stress. UDL, under the detection limit.