Interactive visualisation of plant defence responses to pathogens
Plants kill their own cells to starve invaders
No antibodies, no bloodstream, no movement — yet plants repel most pathogens most of the time. From waxy shields to chemical warfare to sacrificial cell suicide, plant immunity is a coordinated defence system that can even warn neighbouring plants. Drag the slider to escalate the plant's immune response from passive barriers to full hypersensitive shutdown.
Defence Escalation
Passive barriers
Slide to activate progressively stronger defences
Waxy cuticle active
BarriersChemicalCell deathSystemic
Active defences
1
Pathogen spread
High
Plants deploy physical barriers as a first line of defence. The waxy cuticle coating leaf surfaces repels water and blocks pathogen entry points. Cell walls provide structural resistance, while bark creates a thick protective layer on stems. When threatened, stomata — the pores through which plants breathe — can close within minutes, sealing potential invasion routes. These passive barriers work constantly, requiring no energy investment beyond their initial construction, making them the most economical defence strategy in the plant's arsenal.
Know This
The hypersensitive response sacrifices infected cells to create a dead zone that starves the pathogen, while systemic acquired resistance puts the entire plant on alert, priming distant tissues to resist future attacks.