Subtopic Deep Dive

Jasmonate Signaling Pathways
Research Guide

What is Jasmonate Signaling Pathways?

Jasmonate signaling pathways are plant hormonal cascades involving biosynthesis, COI1-JAZ receptor perception, and transcriptional regulation that activate defenses against insect herbivores.

These pathways start with jasmonic acid (JA) production via lipoxygenase enzymes, followed by perception through SCFCOI1-JAZ complexes that degrade JAZ repressors upon herbivore attack (Thines et al., 2007; Chini et al., 2007). Key components include JAZ proteins as transcriptional repressors and MYC2 as a master regulator. Over 10,000 papers cite these mechanisms, with Wasternack and Hause (2013) review at 2469 citations summarizing updates.

Curated Papers

Key Challenges

Why It Matters

Jasmonate pathways drive production of proteinase inhibitors and toxins that deter chewing insects, enabling engineering of resistant crops like tomato and maize (Howe and Jander, 2007). Airborne methyl jasmonate signals interplant defense priming, reducing field losses from herbivores (Farmer and Ryan, 1990). Crosstalk with ethylene and salicylate pathways fine-tunes responses to specific attackers, informing biocontrol strategies (Lorenzo et al., 2003; Thomma et al., 1998).

Key Research Challenges

Crosstalk Complexity

Jasmonate interacts with salicylate and ethylene pathways, complicating targeted activation for insect resistance (Thomma et al., 1998; Lorenzo et al., 2003). Dissecting these networks requires multi-omics integration. Wasternack and Hause (2013) highlight unresolved regulatory hierarchies.

Biosynthesis Regulation

Lipoxygenase pathway enzymes vary by tissue and attacker, hindering uniform JA production models (Feußner and Wasternack, 2002). Metabolite diversity like JA-Ile adds layers (Wasternack, 2007). Quantitative pathway modeling remains incomplete.

Field Translation Gaps

Lab-identified JAZ-COI1 mechanisms underperform in crops under field herbivory (Howe and Jander, 2007). Environmental factors disrupt signaling reliability. Sheard et al. (2010) receptor structures demand agronomic validation.

Essential Papers

Jasmonates: biosynthesis, perception, signal transduction and action in plant stress response, growth and development. An update to the 2007 review in Annals of Botany

Claus Wasternack, Bettina Hause · 2013 · Annals of Botany · 2.5K citations

The last few years have seen breakthroughs in the identification of JASMONATE ZIM DOMAIN (JAZ) proteins and their interactors such as transcription factors and co-repressors, and the crystallizatio...

JAZ repressor proteins are targets of the SCFCOI1 complex during jasmonate signalling

Bryan Thines, Leron Katsir, Maeli Melotto et al. · 2007 · Nature · 2.5K citations

The JAZ family of repressors is the missing link in jasmonate signalling

Andrea Chini, Sandra Fonseca, Gorka S. Fernandez et al. · 2007 · Nature · 2.4K citations

Plant Immunity to Insect Herbivores

Gregg A. Howe, Georg Jander · 2007 · Annual Review of Plant Biology · 2.3K citations

Herbivorous insects use diverse feeding strategies to obtain nutrients from their host plants. Rather than acting as passive victims in these interactions, plants respond to herbivory with the prod...

Jasmonates: An Update on Biosynthesis, Signal Transduction and Action in Plant Stress Response, Growth and Development

Claus Wasternack · 2007 · Annals of Botany · 1.8K citations

Crystal structure of enzymes in jasmonate biosynthesis, increasing number of jasmonate metabolites and newly identified components of the jasmonate signal-transduction pathway, including specifical...

Separate jasmonate-dependent and salicylate-dependent defense-response pathways in <i>Arabidopsis</i> are essential for resistance to distinct microbial pathogens

Bart P. H. J. Thomma, Kristel Eggermont, Iris A. M. A. Penninckx et al. · 1998 · Proceedings of the National Academy of Sciences · 1.5K citations

The endogenous plant hormones salicylic acid (SA) and jasmonic acid (JA), whose levels increase on pathogen infection, activate separate sets of genes encoding antimicrobial proteins in Arabidopsis...

T<scp>HE</scp> L<scp>IPOXYGENASE</scp> P<scp>ATHWAY</scp>

Ivo Feußner, Claus Wasternack · 2002 · Annual Review of Plant Biology · 1.5K citations

▪ Abstract Lipid peroxidation is common to all biological systems, both appearing in developmentally and environmentally regulated processes of plants. The hydroperoxy polyunsaturated fatty acids, ...

Reading Guide

Foundational Papers

Read Wasternack and Hause (2013) first for pathway overview (2469 citations), then Thines et al. (2007) and Chini et al. (2007) for JAZ-COI1 discovery, and Howe and Jander (2007) for insect context.

Recent Advances

Study Sheard et al. (2010) for JA perception crystal structure and Wasternack (2007) update for metabolite advances, bridging to 2013 review.

Core Methods

Core techniques: lipoxygenase assays (Feußner and Wasternack, 2002), co-receptor crystallography (Sheard et al., 2010), mutant phenotyping (Thomma et al., 1998), and volatile JA signaling tests (Farmer and Ryan, 1990).

How PapersFlow Helps You Research Jasmonate Signaling Pathways

Discover & Search

Research Agent uses searchPapers('jasmonate JAZ COI1 insect defense') to retrieve 2469-citation Wasternack and Hause (2013), then citationGraph reveals Thines et al. (2007) as central hub, and findSimilarPapers expands to 50+ related works on herbivore signaling.

Analyze & Verify

Analysis Agent applies readPaperContent on Chini et al. (2007) to extract JAZ degradation kinetics, verifyResponse with CoVe cross-checks against Howe and Jander (2007) for GRADE A evidence on insect immunity, and runPythonAnalysis plots JA metabolite levels from Feußner and Wasternack (2002) data via pandas for statistical validation.

Synthesize & Write

Synthesis Agent detects gaps in ethylene-JA crosstalk from Lorenzo et al. (2003), flags contradictions between lab and field data in Howe and Jander (2007), while Writing Agent uses latexEditText for pathway edits, latexSyncCitations for 10+ refs, latexCompile for figures, and exportMermaid diagrams COI1-JAZ complexes.

Use Cases

"Extract JA biosynthesis rates from lipoxygenase papers and plot vs. insect damage levels"

Research Agent → searchPapers('lipoxygenase jasmonate biosynthesis') → Analysis Agent → readPaperContent(Feußner and Wasternack 2002) → runPythonAnalysis(pandas plot of enzyme kinetics) → researcher gets matplotlib graph of JA accumulation curves.

"Draft LaTeX review section on JAZ repressors with citations and signaling diagram"

Synthesis Agent → gap detection(Chini et al. 2007, Thines et al. 2007) → Writing Agent → latexEditText('JAZ section') → latexSyncCitations → latexCompile + exportMermaid(JAZ-COI1 flowchart) → researcher gets compiled PDF with diagram.

"Find code for modeling jasmonate signaling in Arabidopsis herbivory simulations"

Research Agent → searchPapers('jasmonate signaling model code') → paperExtractUrls → paperFindGithubRepo → githubRepoInspect → researcher gets runnable Python scripts for JA pathway ODE simulations.

Automated Workflows

Deep Research workflow scans 50+ papers via searchPapers on 'jasmonate insect defense', structures report with citationGraph centrality on Wasternack (2013), and GRADE-scores claims. DeepScan's 7-step chain verifies JAZ degradation (Thines et al., 2007) with CoVe checkpoints and runPythonAnalysis on signaling kinetics. Theorizer generates hypotheses on JA-ethylene tuning from Lorenzo et al. (2003) for crop engineering.

Try Doxa for Jasmonate Signaling Pathways Research

Frequently Asked Questions

What defines jasmonate signaling pathways?

Jasmonate signaling begins with JA biosynthesis via lipoxygenases, perception by COI1-JAZ co-receptors leading to JAZ degradation, and MYC2-mediated transcription of defenses (Wasternack and Hause, 2013).

What are key methods in jasmonate research?

Methods include SCFCOI1 pulldowns for JAZ interactors (Thines et al., 2007), JA-Ile quantification by LC-MS (Sheard et al., 2010), and Arabidopsis coi1 jaz mutants for pathway dissection (Chini et al., 2007).

What are the most cited papers?

Top papers are Wasternack and Hause (2013, 2469 citations) on full pathway update, Thines et al. (2007, 2465 citations) on SCFCOI1-JAZ, and Chini et al. (2007, 2380 citations) identifying JAZ repressors.

What open problems exist?

Challenges include field efficacy of JA engineering, precise crosstalk nodes with ethylene/salicylate (Lorenzo et al., 2003; Thomma et al., 1998), and tissue-specific biosynthesis control (Feußner and Wasternack, 2002).