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. 2022 Sep 14;13:970139. doi: 10.3389/fmicb.2022.970139

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Copyright © 2022 Wang, Sun, Liu, Peng, Li, Hu, Wang, Wang, Afzal and Geng.

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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Detection of H₂O₂ by 3,3-diaminobenzidine (DAB) staining. Leaf samples were collected 7 days after inoculation with the tomato yellow leaf curl virus (TYLCV) infectious clone that were pre-treated with coronatine (COR), salicylic acid (SA), jasmonate acid (JA), or mock. Brown color in the leaves serves as a proxy for H₂O₂ production. Shown are representative pictures from three biological repeats.