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. 2019 Nov 12;10:2591. doi: 10.3389/fmicb.2019.02591

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Copyright © 2019 Huang, Chen, Zhang, Song, Chen and Tang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Microphotographs showing the symbiotic relationships between Funneliformis mosseae and Robinia pseudoacacia seedlings grown under the control Pb treatment (0 mg Pb kg^{– 1} soil) for 4 months. (A) Roots of non-inoculated plants without any extraradical hyphae and spores. (B) Roots of inoculated plants with extraradical hyphae and spores. (C) Root cells of non-inoculated plants. (D) Intraradical hyphae and arbuscular in the root cells of inoculated plants. (A,B) 25 × magnification; (C,D) 200 × magnification.