PMID- 35864601 OWN - NLM STAT- MEDLINE DCOM- 20220913 LR - 20220929 IS - 1365-3040 (Electronic) IS - 0140-7791 (Linking) VI - 45 IP - 10 DP - 2022 Oct TI - Constitutive expression of JASMONATE RESISTANT 1 induces molecular changes that prime the plants to better withstand drought. PG - 2906-2922 LID - 10.1111/pce.14402 [doi] AB - In this study, we investigated Arabidopsis thaliana plants with altered levels of the enzyme JASMONATE RESISTANT 1 (JAR1), which converts jasmonic acid (JA) to jasmonoyl-l-isoleucine (JA-Ile). Analysis of a newly generated overexpression line (35S::JAR1) revealed that constitutively increased JA-Ile production in 35S::JAR1 alters plant development, resulting in stunted growth and delayed flowering. Under drought-stress conditions, 35S::JAR1 plants showed reduced wilting and recovered better from desiccation than the wild type. By contrast, jar1-11 plants with a strong reduction in JA-Ile content were hypersensitive to drought. RNA-sequencing analysis and hormonal profiling of plants under normal and drought conditions provided insights into the molecular reprogramming caused by the alteration in JA-Ile content. Especially 35S::JAR1 plants displayed changes in expression of developmental genes related to growth and flowering. Further transcriptional differences pertained to drought-related adaptive systems, including stomatal density and aperture, but also reactive oxygen species production and detoxification. Analysis of wild type and jar1-11 plants carrying the roGFP-Orp1 sensor support a role of JA-Ile in the alleviation of methyl viologen-induced H(2) O(2) production. Our data substantiate a role of JA-Ile in abiotic stress response and suggest that JAR1-mediated increase in JA-Ile content primes Arabidopsis towards improved drought stress tolerance. CI - (c) 2022 The Authors. Plant, Cell & Environment published by John Wiley & Sons Ltd. FAU - Mahmud, Sakil AU - Mahmud S AD - Plant Cell Biology, Institute of Cellular and Moleculara Botany, University of Bonn, Bonn, Germany. AD - Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh, Bangladesh. FAU - Ullah, Chhana AU - Ullah C AUID- ORCID: 0000-0002-8898-669X AD - Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany. FAU - Kortz, Annika AU - Kortz A AD - Crop Functional Genomics, Institute of Crop Science and Resource Conservation, University of Bonn, Bonn, Germany. FAU - Bhattacharyya, Sabarna AU - Bhattacharyya S AD - Plant Cell Biology, Institute of Cellular and Moleculara Botany, University of Bonn, Bonn, Germany. FAU - Yu, Peng AU - Yu P AD - Crop Functional Genomics, Institute of Crop Science and Resource Conservation, University of Bonn, Bonn, Germany. AD - Emmy Noether Group Root Functional Biology, Institute of Crop Science and Resource Conservation, University of Bonn, Bonn, Germany. FAU - Gershenzon, Jonathan AU - Gershenzon J AD - Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany. FAU - Vothknecht, Ute C AU - Vothknecht UC AUID- ORCID: 0000-0002-8930-0127 AD - Plant Cell Biology, Institute of Cellular and Moleculara Botany, University of Bonn, Bonn, Germany. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220803 PL - United States TA - Plant Cell Environ JT - Plant, cell & environment JID - 9309004 RN - 0 (Arabidopsis Proteins) RN - 0 (Cyclopentanes) RN - 0 (Oxylipins) RN - 04Y7590D77 (Isoleucine) RN - 6RI5N05OWW (jasmonic acid) SB - IM MH - *Arabidopsis/physiology MH - *Arabidopsis Proteins/metabolism MH - Cyclopentanes/metabolism MH - Droughts MH - Gene Expression Regulation, Plant MH - Isoleucine/metabolism MH - Oxylipins/metabolism OTO - NOTNLM OT - JA-Ile OT - RNA-seq OT - ROS OT - jasmonic acid OT - phytohormones OT - plant development EDAT- 2022/07/23 06:00 MHDA- 2022/09/14 06:00 CRDT- 2022/07/22 00:42 PHST- 2022/07/06 00:00 [revised] PHST- 2022/05/10 00:00 [received] PHST- 2022/07/19 00:00 [accepted] PHST- 2022/07/23 06:00 [pubmed] PHST- 2022/09/14 06:00 [medline] PHST- 2022/07/22 00:42 [entrez] AID - 10.1111/pce.14402 [doi] PST - ppublish SO - Plant Cell Environ. 2022 Oct;45(10):2906-2922. doi: 10.1111/pce.14402. Epub 2022 Aug 3.