Plants and Immunity
Do plants have an immune system?
The general answer is, yes. However, there may be some issues about how you
define "immune system". Certainly, some plant species are more resistant to
various diseases than other plants, and can be genetically modified either
by natural selection or human genetic modification to be more resistant to
some disease, herbicide, chemical etc. But the mechanism by which plant
immune systems function are different that the mechanism by which animal
(including human) immune systems function.
The following should be helpful:
Anthony R. Brach, Ph.D.
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Update: June 2012