negative regulation of indoleacetic acid biosynthetic process via tryptophan
Known as: downregulation of indoleacetic acid formation via tryptophan, down-regulation of indoleacetic acid anabolism via tryptophan, negative regulation of indoleacetic acid anabolism via tryptophan
Any process that stops, prevents or reduces the frequency, rate or extent of indoleacetic acid biosynthetic process via tryptophan. [GOC:TermGenie…