negative regulation of appressorium formation
Any process that stops, prevents, or reduces the frequency, rate or extent of symbiont appressorium formation.
GO:0051093
negative regulation of developmental process
is_a
GO:0075017
regulation of appressorium formation
is_a
GO:0075016
appressorium formation
negatively_regulates
negative regulation of appressorium formation on or near host
related