{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T02:46:27Z","timestamp":1789526787309,"version":"build-2803163510"},"reference-count":61,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2021,7,10]],"date-time":"2021-07-10T00:00:00Z","timestamp":1625875200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["32000150"],"award-info":[{"award-number":["32000150"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["bsppjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Molecular Plant Pathology"],"published-print":{"date-parts":[[2021,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Salicylic acid (SA) acts antagonistically to jasmonic acid (JA) in plant immunity. We previously reported that CATALASE2 (CAT2) promotes JA\u2010biosynthetic acyl\u2010CoA oxidase (ACX) activity to enhance plant resistance to necrotrophic <jats:italic>Botrytis cinerea<\/jats:italic>, and SA represses JA biosynthesis through inhibiting CAT2 activity, while the underlying mechanism remains to be further elucidated. Here, we report that the truncated CAT2 N\u2010terminus (CAT2\u2010N) interacts with and promotes ACX2\/3, and <jats:italic>CAT2\u2010N<\/jats:italic>\u2010overexpressing plants have increased JA accumulation and enhanced resistance to <jats:italic>B<\/jats:italic>.\u00a0<jats:italic>cinerea<\/jats:italic> B05.10, but compromised antagonism of SA on JA. Catalase inhibitor treatment or mutating CAT2 active amino acids abolished CAT2 H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub>\u2010decomposing activity but did not affect its promotion of ACX2\/3 activity via interaction. CAT2\u2010N, a truncated protein with no catalase activity, interacted with and promoted ACX2\/3. Overexpressing <jats:italic>CAT2\u2010N<\/jats:italic> in <jats:italic>Arabidopsis<\/jats:italic> plants resulted in increased ACX activity, higher JA accumulation, and stronger resistance to <jats:italic>B<\/jats:italic>.\u00a0<jats:italic>cinerea<\/jats:italic> B05.10 infection. Additionally, SA dramatically repressed JA biosynthesis and resistance to <jats:italic>B<\/jats:italic>.\u00a0<jats:italic>cinerea<\/jats:italic> in the wild type but not in the <jats:italic>CAT2\u2010N<\/jats:italic>\u2010overexpressing plants. Together, our study reveals that CAT2\u2010N can be utilized as an accelerator for JA biosynthesis during plant resistance to <jats:italic>B<\/jats:italic>.\u00a0<jats:italic>cinerea<\/jats:italic> B05.10, and this truncated protein partly relieves SA repression of JA biosynthesis in plant defence responses.<\/jats:p>","DOI":"10.1111\/mpp.13106","type":"journal-article","created":{"date-parts":[[2021,7,10]],"date-time":"2021-07-10T23:20:30Z","timestamp":1625959230000},"page":"1226-1238","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":33,"title":["Overexpressing the N\u2010terminus of <i>CATALASE2<\/i> enhances plant jasmonic acid biosynthesis and resistance to necrotrophic pathogen <i>Botrytis cinerea<\/i> B05.10"],"prefix":"10.1111","volume":"22","author":[{"given":"Yu","family":"Zhang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Crop Stress Adaptation and Improvement School of Life Sciences Henan 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