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. 2021 May 7;12:664519. doi: 10.3389/fpls.2021.664519

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Copyright © 2021 Su, Huang, Dong, Wang, Tang, Cai, Chen, Zhang and Nie.

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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Effects of exogenous methyl jasmonic acid (MeJA) on (A) superoxide dismutase (SOD), (B) catalase (CAT), (C) peroxide (POD), and (D) ascorbate peroxidase (APX) activities in leaves of perennial ryegrass after heat stress. Vertical bars indicate ± SE of the mean (n = 5). No common letter above bar indicates a significant difference by least significant difference (LSD) (P < 0.05) on a given day. CK, control check; CK + MeJA, control check was pretreated with 100 μmol/L of MeJA; H, heat stress; H + MeJA, heat-stressed plants pretreated with 100 μmol/L of MeJA.