Correlation between JA and jasmonic acid receptor COI1 in tobacco
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ABSTRACT:
PROVIDER: PRJNA1189085 | ENA |
REPOSITORIES: ENA
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Project description:JA-signaling in plants is manipulated by COI1 that recruits the protein complex perceiving JA signal . To determine JA correlated with the function of tobacco COI1, NtCOI1-silenced and control before and after MeJA treatment were analyzed using microarray chip.
2024-11-28 | GSE282523 | GEO
Project description:Jasmonic acid (JA) is a fatty-acid derived signaling molecule that regulates a wide variety of plant developmental and stress-related responses. We identified a jasmonate-insensitive1 (jai1) mutant of tomato that is defective in the LeCOI1 gene, which plays an essential role in induced resistance of tomato to a broad spectrum of pests, and is also required for maternal control of seed and fruit development. The present study is aimed at identifying genes involved in two JA-signaled processes that have not been studied in other plants. The first specific aim is to identify the set of JA/COI1-regulated genes in tomato reproductive tissues, with emphasis on genes expressed in maternal tissues. We hypothesize that JA/COI1 signaling regulates maternal processes that nurture the developing embryo and seed. The second aim of the study is to identify JA/COI1-regulated genes that are specifically expressed in tomato roots. Although it has been shown that JA promotes root defenses against various pests, virtually nothing is known about the JA-regulated transcriptome in roots. Tomato (Solanum lycopersicum) cv Micro-Tom wild-type and jai1 seed were grown in peat pots and maintained in growth chambers. To identify COI1-regulated genes in reproductive tissues, flower buds, open flowers and immature fruit at 7 and 17 days post-pollination were collected from 8 to 10 week old plants. To identify COI1-regulated genes in roots, 3 week old plants were exposed to exogenous JA by a single soil drench with 0.1mM JA, and roots were collected after 1, 6, 12 and 24 hours. Plants treated with water were used for the 0hr time point. All tissue was snap-frozen in liquid nitrogen, and RNA was extracted and analyzed as described in the TIGR Potato Microarray protocol (phenol method). Three biological replicates were collected for this study. Keywords: Direct comparison
2007-09-01 | GSE8284 | GEO
Project description:Treatment of Arabidopsis thaliana (ecotype Col-0) seedlings with jasmonic acid (JA) elicits long-term induced resistance (IR) against the chewing herbivore Spodoptera littoralis. We used RNA-seq to profile the transcriptional changes associated with this long-lasting JA-IR.
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Project description:Actinobacteria are prevalent in the rhizosphere and phyllosphere of diverse plant species where they help to enhance tolerance of plants against biotic and abiotic stresses. Here, we show that the plant hormones jasmonic acid (JA) and methyljasmonate (MeJA) alter growth, development and specialized metabolism of Streptomyces. Exposure of Streptomyces coelicolor to JA or MeJA led to enhanced production of the polyketide antibiotic actinorhodin. JA also exhibited toxicity towards Streptomycetaceae, whereby streptomycetes were more tolerant to JA than members of the genus Streptacidiphilus. This defensive response was associated with amino acid conjugation of JA with glutamine (Gln)-JA as the most prevalent conjugant, while conjugates with Val, Tyr, Phe and Leu/Ile were identified after longer exposure to JA. Synthetic JA conjugates failed to activate antibiotic production and showed significantly reduced toxicity. Thus, our findings shed light on a previously unknown defense mechanism deployed by Streptomyces, with amino acid conjugation protecting against the toxic effects of plant hormones. This study adds to the growing body of evidence that plant hormones can have a significant impact on members of the plant microbiome by affecting their growth, development, and secondary metabolism.
2023-08-18 | MSV000092688 | MassIVE
Project description:Jasmonic acid (JA) is involved in various developmental processes and defense responses against abiotic and biotic stresses. We identified JA-responsive genes in rice leaves 6-48 h after treatment using rice 44k microarray.
2011-10-06 | GSE32634 | GEO
Project description:In this study, integrated transcriptomics and proteomics approaches were applied to investigate the molecular responses of JA in the shoots of 7-days old rice (cv. Nipponbare) seedlings exposed to 5 micromolar JA for a period of 7 days. Based on the morphological alteration of JA-exposed rice seedlings, transcript profiling of rice genes was performed in seedlings using rice DNA microarray chip, and proteomics by 2-DGE. This systematic survey showed that JA triggers a chain reaction of altered gene and protein expressions involved in multiple cellular processes in rice growth and development and defense. Keywords: JA exposure response
2008-04-15 | GSE11158 | GEO
Project description:Jasmonic acid (JA) is involved in various developmental processes and defense responses against abiotic and biotic stresses. We identified JA-responsive genes in suspension-cultured rice cells 2-12 h after treatment using rice 44k microarray.
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Project description:High light (HL)-induced chloroplast retrograde signaling originates from the photosynthetic apparatus and regulates nuclear gene expression to enhance photoprotection and coordinate cell metabolism. Here, we analyzed the transcript profiles and accumulation of reactive oxygen species (ROS), stress hormones and small molecule antioxidants to investigate the signaling mechanisms operating under HL stress, and in particular during plant recovery (R) from stress under growth conditions. Exposure to HL for 15 min induced a number of singlet oxygen (1O2) and hydrogen peroxide (H2O2)-responsive genes and accumulation of an oxidative form of glutathione (GSSG) and ascorbate (DHA), the hallmarks of oxidative stress in cells. Prolonged exposure to HL resulted in accumulation of transcripts encoding oxylipin biosynthesis enzymes, leading to accumulation of 12-oxo-phytodienoic acid (OPDA) and jasmonic acid (JA). However, the expression of several JA-responsive genes, already induced by HL, peaked during the R-phase (R-sustained) together with accumulation of JA, reduced glutathione (GSH) and ascorbate (AsA), highlighting the critical role of JA signaling in restoring chloroplast redox balance following HL stress. The involvement of JA signaling in R-sustained gene expression was further confirmed by conducting experiments with JA receptor mutants (coi1). HL exposure of only 2 min was sufficient to induce some R-sustained genes, indicating rapid response of plants to changing light conditions. We propose that ROS production at HL induces the signaling cascade for early oxylipin biosynthesis and OPDA accumulation, while increased accumulation of JA in R-phase activates the genes that fully restore the glutathione metabolism, and ultimately allow recovery from short-term HL stress.
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Project description:To investigate how JA regulates Al-induced inhibition of root growth, a transcriptional analysis through RNAseq was performed by comparing the coi1-2 mutant and WT plants in the presence or absence of Al. In the absence of Al, 149 and 147 genes were up- and down-regulated, respectively, at least 2-fold in the roots of the coi1-2 mutant and WT plants. In the presence of Al, 1747 and 5838 genes were up- and down-regulated, respectively, in the roots of WT plants, while 1449 and 3773 genes were up- and down-regulated, respectively in the coi1-2 mutant. While the comparison of the Al-exposed coi1-2 mutant and WT plants reveals that totally 1187 genes were up-regulated and only 197 genes were down-regulated at least 2-fold.
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Project description:The two-spotted spider mite, Tetranychus urticae, is one of the most significant mite pests in agriculture that can feed on more than 1,100 plant hosts, including model plants Arabidopsis thaliana and tomato, Solanum lycopersicum. In order to refine the involvement of jasmonic acid (JA) in mite-induced responses, we analyzed transcriptional changes in tomato JA signaling mutant defenseless1 (def-1) upon JA treatment and spider mite herbivory. We used microarray to assess global gene expression in Solanum lycopersicum def-1 cv. Castlemart upon jasmonic acid treatment and Tetranychus urticae attack.
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