Plant growth regulators from the fruiting bodies of Tricholoma flavovirens.

A novel indole derivative (1) and three known compounds (2-4) were isolated from the fruiting bodies of Tricholoma flavovirens. Their structures were determined or identified by the interpretation of spectroscopic data. Compounds 1 and 2 promoted root growth of lettuce and inhibited hypocotyl growth at 1 µmol/paper. Compound 3 inhibited hypocotyl and root growth at 100 nmol/paper.