PMID- 28321936 OWN - NLM STAT- MEDLINE DCOM- 20171229 LR - 20190806 IS - 1365-313X (Electronic) IS - 0960-7412 (Linking) VI - 90 IP - 6 DP - 2017 Jun TI - Jasmonate inhibits COP1 activity to suppress hypocotyl elongation and promote cotyledon opening in etiolated Arabidopsis seedlings. PG - 1144-1155 LID - 10.1111/tpj.13539 [doi] AB - A germinating seedling undergoes skotomorphogenesis to emerge from the soil and reach for light. During this phase, the cotyledons are closed, and the hypocotyl elongates. Upon exposure to light, the seedling rapidly switches to photomorphogenesis by opening its cotyledons and suppressing hypocotyl elongation. The E3 ubiquitin ligase CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1) is critical for maintaining skotomorphogenesis. Here, we report that jasmonate (JA) suppresses hypocotyl elongation and stimulates cotyledon opening in etiolated seedlings, partially phenocopying cop1 mutants in the dark. We also find that JA stabilizes several COP1-targeted transcription factors in a COP1-dependent manner. RNA-seq analysis further defines a JA-light co-modulated and cop1-dependent transcriptome, which is enriched for auxin-responsive genes and genes participating in cell wall modification. JA suppresses COP1 activity through at least two distinct mechanisms: decreasing COP1 protein accumulation in the nucleus; and reducing the physical interaction between COP1 and its activator, SUPPRESSOR OF PHYTOCHROME A-105 1 (SPA1). Our work reveals that JA suppresses COP1 activity to stabilize COP1 targets, thereby inhibiting hypocotyl elongation and stimulating cotyledon unfolding in etiolated Arabidopsis seedlings. CI - (c) 2017 The Authors The Plant Journal (c) 2017 John Wiley & Sons Ltd. FAU - Zheng, Yuyu AU - Zheng Y AD - Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China. FAU - Cui, Xuefei AU - Cui X AD - Tianjin Key Laboratory of Protein Sciences, Department of Plant Biology and Ecology, College of Life Sciences, Nankai University, Tianjin, 300071, China. FAU - Su, Liang AU - Su L AD - Institute of Crop Science, Chinese Academy of Agriculture Sciences, Beijing, 100081, China. FAU - Fang, Shuang AU - Fang S AD - National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China. FAU - Chu, Jinfang AU - Chu J AD - National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China. FAU - Gong, Qingqiu AU - Gong Q AD - Tianjin Key Laboratory of Protein Sciences, Department of Plant Biology and Ecology, College of Life Sciences, Nankai University, Tianjin, 300071, China. FAU - Yang, Jianping AU - Yang J AD - Institute of Crop Science, Chinese Academy of Agriculture Sciences, Beijing, 100081, China. FAU - Zhu, Ziqiang AU - Zhu Z AD - Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China. LA - eng SI - GENBANK/SRP093903 PT - Journal Article DEP - 20170429 PL - England TA - Plant J JT - The Plant journal : for cell and molecular biology JID - 9207397 RN - 0 (Arabidopsis Proteins) RN - 0 (Basic-Leucine Zipper Transcription Factors) RN - 0 (Cyclopentanes) RN - 0 (Oxylipins) RN - 6RI5N05OWW (jasmonic acid) RN - EC 2.3.2.27 (AT2G32950 protein, Arabidopsis) RN - EC 2.3.2.27 (Ubiquitin-Protein Ligases) SB - IM MH - Arabidopsis/drug effects/*growth & development/*metabolism MH - Arabidopsis Proteins/genetics/*metabolism MH - Basic-Leucine Zipper Transcription Factors/genetics/metabolism MH - Cotyledon/drug effects/growth & development/metabolism MH - Cyclopentanes/*pharmacology MH - Gene Expression Regulation, Plant/drug effects/genetics MH - Hypocotyl/drug effects/*growth & development/*metabolism MH - Oxylipins/*pharmacology MH - Seedlings/drug effects/*growth & development/*metabolism MH - Ubiquitin-Protein Ligases/genetics/*metabolism OTO - NOTNLM OT - Arabidopsis OT - CONSTITUTIVE PHOTOMORPHOGENIC 1 OT - ELONGATED HYPOCOTYL 5 OT - jasmonate OT - photomorphogenesis OT - protein degradation OT - skotomorphogenesis EDAT- 2017/03/23 06:00 MHDA- 2017/12/30 06:00 CRDT- 2017/03/22 06:00 PHST- 2017/01/17 00:00 [received] PHST- 2017/03/07 00:00 [revised] PHST- 2017/03/10 00:00 [accepted] PHST- 2017/03/23 06:00 [pubmed] PHST- 2017/12/30 06:00 [medline] PHST- 2017/03/22 06:00 [entrez] AID - 10.1111/tpj.13539 [doi] PST - ppublish SO - Plant J. 2017 Jun;90(6):1144-1155. doi: 10.1111/tpj.13539. Epub 2017 Apr 29.