text: * Cell wall reinforcement (cellulose, lignin, suberin, callose, cell wall proteins)
  * Antimicrobial chemicals, including reactive oxygen species such as hydrogen peroxide or peroxynitrite, or more complex phytoalexins such as genistein or camalexin
  * Antimicrobial proteins such as defensins, thionins, or PR-1
  * Antimicrobial enzymes such as chitinases, beta-glucanases, or peroxidases
  * Hypersensitive response – a rapid host cell death response associated with defence induction.