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. 2016 Jul 29;7:1084. doi: 10.3389/fpls.2016.01084

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Copyright © 2016 Augé, Toler and Saxton.

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) or licensor 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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Weighted summary effect sizes (response ratios) and 95% confidence intervals for AM influence on foliar carbon exchange rate (CER), stomatal conductance (g_s), and transpiration rate (E). (A) Overall summary effects. (B) Summary effects for stress moderator. Change refers to raw percentage increase in the gas exchange parameter induced by AM symbiosis. n is number of studies contributing to the effect size. p ≤ 0.05 indicates that the moderator level was significantly different than 0.