Fig. 1. Effect of As and P amendment (mg kg^–1) on percentage of root length colonized by arbuscular mycorrhizal (AM) fungi (A–C), and frond (D–F) and root (G–I) dry masses of Chinese brake fern (Pteris vittata L.) grown in the presence (•) or absence () of mycorrhizal inoculum. Data points represent means of five replicates ± SEM.