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. 2019 Jun 27;10:1455. doi: 10.3389/fmicb.2019.01455

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Copyright © 2019 Ren, Guo, Tian, Chen, Han, Chen, Li, Li and Chen.

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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The Cu concentrations in uninoculated and inoculated plant treatments. The error bars are ± the standard deviation. An asterisk (^*) denotes a significantly different value between the uninoculated and inoculated treatments (P < 0.05).