Plants can recognise pathogens

Plants are able to distinguish between pathogens and beneficial micro-organisms by detecting the different types of molecules the micro-organisms produce.

Researchers discovered that the chitin molecules produced by pathogens do not bind as strongly to the plant receptors as those produced by beneficial micro-organisms.

The plant responds differently depending on how strongly the chitin molecules bind - allowing the beneficial micro-organisms past their defences.

Read more at Aarhus University