The basidiomycete Cantharellus cibarius converts d-tryptophan in submerged culture to N-acetyl-d-tryptophan. Another basidiomycete Tricholoma nudum converts tryptamine to indole-3-acetic acid and 5-hydroxyindole-3-acetic acid. N,N-Dimethyltryptamine is also converted to indole-3-acetic acid but the branched-chain secondary amines β-methyl- and β-ethyltryptamine are not metabolized.