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Mycorrhizae Increase Arsenic Uptake by the Hyperaccumulator Chinese Brake Fern (Pteris vittata L.)

^a Soil and Water Science Department, P.O. Box 110290, University of Florida, Gainesville, FL 32611
^b Crop and Soil Sciences Department, 116 ASI Building, Pennsylvania State University, University Park, PA 16802

View larger version (26K): [in a new window]   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.

View larger version (30K): [in a new window]   Fig. 2. Effect of As and P amendment (mg kg–1) on As accumulation by Chinese brake fern (Pteris vittata L.) grown in the presence (•) or absence () of mycorrhizal inoculum; frond concentration (A–C) and content (D–F) and root concentration (G–I) and content (J–L). Data points represent means of five replicates ± SEM.

View larger version (33K): [in a new window]   Fig. 3. Effect of As and P amendment (mg kg–1) on the P accumulation by Chinese brake fern (Pteris vittata L.) grown in the presence (•) or absence () of mycorrhizal inoculum; frond concentration (A–C) and content (D–F) and root concentration (G–I) and content (J–L). Data points represent means of five replicates ± SEM.

View larger version (20K): [in a new window]   Fig. 4. Effect of As and P amendment (mg kg–1) on translocation factors (the ratio of fronds As content to those in roots) (A–C) and bioconcentration factors (the ratio of fronds As concentration to those in soil) (D–F) of Chinese brake fern (Pteris vittata L.) grown in the presence (•) or absence () of mycorrhizal inoculum. Data points represent means of five replicates ± SEM.