How do plants fight infection? What is their version of an immune system?

Baloo55th

It would seem to be a form of chemical signalling, rather like that employed by bacteria. These little critters aren't just loners, but employ 'quorum sensing' and autoinducers (released chemicals) to ensure the survival of at least part of a community. As for plants, have a look at http://www.upwardquest.com/immune-support/08-plant-immune.html for an idea of how some at least of it works. May 07 05, 3:20 PM

dejavucub4

Like us, plants can be infected by bacterial or viral infections and use a wide variety of ways to combat this ,depending if the infection is in or outside the cell walls,the type of plant etc.In some cases such as burls the plant may surround a deformed or infected area or a plant may kill a leaf or entire branch to save the whole.Some of the best info can be found at your local university ag extension office or the master gardeners sites. May 09 05, 3:16 PM