Any process involved in the activation of any of the steps of the alternative pathway of the complement cascade which allows for the direct killing of microbes and the regulation of other immune processes.
complement activation, classical pathway +
complement activation, lectin pathway +
hemolymph coagulation
induced systemic resistance +
innate immune response in mucosa
innate immunity memory response +
melanization defense response +
natural killer cell mediated immunity +
negative regulation of complement activation +
negative regulation of innate immune response +
plant-type hypersensitive response +
positive regulation of complement activation +
positive regulation of innate immune response +
regulation of complement activation +
regulation of innate immune response +
response to interferon-gamma +
response to type I interferon +
response to type III interferon +
RNAi-mediated antiviral immune response +
suppression by virus of host complement activation