The present invention relates to the preparation of the antibacterial substance L-2-amino-4-methoxy-trans-3-butenoic acid by culturing the organism Pseudomonas aeruginosa.
The present invention concerns a method for inhibiting plant growth, especially of grasses, cereals and soya by treating the emerged plants with an effective amount of a compound of the formula ##STR1## or of a salt thereof. Preferred are salts of the L-transform of the said compound.
