taxis phenotype osmotaxis phenotype 2016-12-20T12:48:52Z A taxis phenotype where the directed movement of a motile microbe is in response to an osmotic concentration gradient (formerly called osmolarity). Osmotaxis differs from chemotaxis in that during osmotaxis the microbe is responding to water activity not to the solute per se. Jesus OMP:0005361 This is a high-level term whose primary purpose is to organize terms beneath it in the ontology, and we expect that it will not be used for direct annotations. Please consider using a more specific term to annotate each phenotype. microbial_phenotype