Effect of Different Cyclohexane-1,3-dione Derivatives on the de novo Fatty-Acid Biosynthesis in Isolated Oat Chloroplasts
1990 ◽
Vol 45
(1-2)
◽
pp. 84-88
◽
Keyword(s):
De Novo
◽
In the test system of isolated oat chloroplasts various structurally different cyclohexane-1.3- dione derivatives were investigated for their inhibitory effect on de novo fatty-acid biosynthesis. Cycloxydim proved to be the most efficient inhibitor in the group of the tested cyclohexane-1,3-diones. The alkoxyimino side-chain appears to be essential for the herbicidal activity. Compounds with variations in other substituents of the cyclohexanedione structure were less inhibitory. The I50-values of most of the applied substances for a 50% inhibition of de novo fatty-acid biosynthesis were in the range of 0.15 μM to 100 μM . Some compounds, however, showed no inhibitory effect.