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. 2019 Jul 3;10:815. doi: 10.3389/fpls.2019.00815

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Copyright © 2019 Zhong, Xu, Meng, Loik, Ma and Sun.

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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(A) Percentage loss of net CO₂ assimilation rate (PLA), (B) percentage recovery of net CO₂ assimilation rate (PRA), and (C) the recovery capability (recovery rate of A) in C. virgata (annual C₄), H. altissima (perennial C₄), and L. chinensis (perennial C₃). Different lower-case letters and capital letters indicate significant differences among the studied grasses under the unfertilized (N0) treatment and the fertilized (N10) treatment, respectively. “^*” represents significant differences between the N treatments (P < 0.05). Data are reported as the arithmetic mean ± 1 standard error (n = 6).