This is due to toxins, extracellular enzymes (exported by the type II secretion system), polysaccharides, lipopolysaccharides, a fatty acid-dependent cell-cell communication system, and proteins (secreted by the type III secretion system), for example. The genes in the bacterial genome that are responsible for such interactions include avirulence (avr) and hypersensitivity response and pathogenicity (hrp) genes.
This is due to poisons, extracellular enzymes (exported by the type II secretion system), polysaccharides, lipopolysaccharides, a fatty acid-dependent cell-cell communication system, and proteins (secreted by the type III secretion system), for instance. The genes in the bacterial genome that are responsible for such interactions include avirulence (avr) and hypersensitivity response and pathogenicity (hrp) genes.