Koch's postulates
Another parasitic "Labyrinthula" is "L. terrestris", which is a terrestrial parasite of turf grasses. It has been identified by the Koch's postulates as responsible for the "rapid blight" killing infected turf grasses. Some other symbiont hosts of "Labyrinthula" are "Chaetomorpha media", a green algae and "Thecamoeba hilla" where they live as mutualistic symbiont.