Claim · model-written summary
A radial hormone gradient shows SA-enriched cells near bacterial colonies and JA-enriched cells in surrounding regions.
- Taxon
- Arabidopsis
Arabidopsise0 - Interactor
- Pseudomonas syringae
Pseudomonas syringaee0pathogen - Compound
- salicylic acid (SA) and jasmonic acid (JA)e5
- Outcome
- radial hormone gradiente5
- Qualifier
- SA-enriched cells proximal to bacterial colonies and JA-enriched cells in surrounding regionse5
Not reportedMaterialGeneOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“live-cell reporters in Arabidopsis infected with Pseudomonas syringae”
e5“simultaneous visualization of salicylic acid (SA) and jasmonic acid (JA) biosynthesis and response markers reveals a radial hormone gradient, with SA-enriched cells proximal to bacterial colonies and JA-enriched cells in surrounding regions”
Title
Spatial organization of plant defense at the infection front
Xiaopeng Li; Yi-Chang Sung; Gitta Coaker; et al. bioRxiv (Cold Spring Harbor Laboratory) 2026. doi:10.64898/2026.04.01.715938
Other claims from this paper (7)
- Observation Effector-triggered immunity superimposed on pattern-triggered immunity establishes a sustained yet spatially confined immune architecture at the infection front.
- Observation Defense activation persists for days but remains restricted to a narrow ring of cells around viable bacterial microcolonies.
- Observation Over time, immune activity spreads to adjacent layers, forming a coordinated multilayered defense zone.
- Observation Polarized callose deposition at pathogen-facing cell walls reinforces a localized containment boundary that limits pathogen spread.
- Observation Individual cells predominantly activate one pathway.
- Mechanism SA–JA antagonism is resolved through spatial compartmentalization across neighboring cells.
- Mechanism Immune zonation is proposed as a strategy for robust pathogen containment while minimizing collateral tissue damage.