Biology 4218A Lecture Notes - Lecture 13: Antibody, Systemic Acquired Resistance, Immune Receptor
13 Dec 2016
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Plants detect elicitors (molecs produced during interaction, that acts as signaling molecules; e. g. pamps, mamps, damps) using immune receptors (prrs), so plant induces its defense against the pathogen. Immune receptors can be on pm or intracellular. Localized induced cell defense at infection site, initiated by recognition of elicitors, which leads to rapid mobilization of defense cascade, resulting in death of adjacent host cells in order to stop biotrophic pathogen"s path. Rate-dependent effectiveness (hr may be trailing behind pathogenicity) Response spreads through plant by signaling molecules. Protection induced by non-pathogenic organism e. g. rhizobacteria (root-assoc"d fungi) Plant immune system receptor and recognition proteins. E. g. , hc-toxin reductase is an r-gene, able to detoxify hc-toxin. Plant immune systems are cell autonomous and non-adaptive. They have no circulating immune system, can"t create antibodies; all cells just have preexisting or inducible defenses. Ec recognition with pm prrs (which can be receptor kinases and receptor-like proteins)
