part of formation of structure involved in a symbiotic process appressorium maturation establishment of turgor in appressorium Note that this term should not be used to annotate gene products of the host. It should only be used to annotate those gene products from the symbiont involved in this process. biological_process formation of turgor in appressorium establishment of turgor in symbiont appressorium on or near host generation of turgor in appressorium The process in which hydrostatic pressure is increased within the symbiont appressorium to breach the cuticle of the host. The host is defined as the larger of the organisms involved in a symbiotic interaction. GO:0075039