What does immunity refer to in plant pathology?

Immunity, in the context of plant pathology, specifically refers to a plant's resistance to diseases. This involves a plant's ability to recognize pathogens and activate defense mechanisms that prevent the establishment and spread of these harmful organisms. Plants can develop immunity through various mechanisms, including physical barriers like thicker cell walls or chemical responses such as the production of antimicrobial compounds.

Understanding immunity helps in managing plant health and mitigating disease impact. Plants that possess strong immunity typically exhibit fewer symptoms when exposed to pathogens, maintain better overall health, and produce higher yields. This characteristic of resistance is crucial for agricultural practices, where disease management is essential for sustaining crop productivity and quality.