PLANT DERIVED HYDROXY PHENYL PYRUVATE DIOXYGENASES (HPPD) RESISTANT AGAINST TRIKETONE HERBICIDES AND TRANSGENIC PLANTS CONTAINING THESE DIOXYGENASES

摘要

An HPPD-inhibitor resistant HPPD enzyme comprising an amino acid sequence GIKECQ and a sequence F, (D/E), F, (M/L), W1, (P/A), P, W2, X, X, Y, Y wherein W1 is either A or P and where (i) if W1 is A then W2 is P, A, Q or L or, (ii) if W1 is P then W2 is P, A, Q or T, and wherein X is any amino acid. The invention also include methods of identifying HPPD inhibitor resistant HPPD enzymes and also of the enzymes thus identified.