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. 2022 Mar 10;13:857980. doi: 10.3389/fpls.2022.857980

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Copyright © 2022 Raza, Su, Jia, Luo, Zhang, Gao, Hussain, Mehmood, Cheng, Lv and Zou.

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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Impact of Tre on antioxidant enzyme activities in rapeseed seedling under cold stress conditions. (A) Catalase (CAT) activity, (B) peroxidase (POD) activity, (C) superoxide dismutase (SOD) activity, and (D) ascorbate peroxidase (APX) activity under four treatments [control (CK), CK + Tre, Cold, and Cold + Tre] and three stress conditions (4, 0, and –4°C). Tre indicates the application of 20 mM L^{– 1} of Tre. Data are expressed as the mean (± SD) from three biological replications for each sample and treatment. Asterisks show significant levels at ^****P < 0.0001, ^***P ≤ 0.001, ^**P ≤ 0.01, *P ≤ 0.05, and ns means non-significant.