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Root colonization of Robinia pseudoacacia seedlings by Funneliformis mosseae being subjected to different Pb levels for 4 months. (A) Hyphal colonization; (B) Arbuscular colonization. (C) Vesicular colonization. (D) Total colonization. Shown are means ± SD (n = 3). Different lowercase letters indicate significant differences among different Pb levels within the inoculated treatment (P < 0.05; ANOVA with post hoc Duncan).
