L. Valadon, R. Mummery
Nov 1, 1978
Citations
0
Influential Citations
4
Citations
Journal
Zeitschrift für Pflanzenphysiologie
Abstract
Summary The two triethylamines, 2-(4-chlorophenylthio)-triethylamine (CPTA) and 4-chloro-[β-(diethylamine)-ethyl]-benzoate (CDEB) were used to investigate carotenoid biosynthesis in Turkish lemons and oranges, C. limonia var. Messina and C. sinensis var. Valencia respectively, as a function of time. In all cases, lycopene not present in controls appeared in large amounts, as did ζ-carotene in the oranges. Since β-carotene does not accumulate with either chemical the inhibition may be specific for the steps between lycopene and β-carotene in our case. When different concentrations of CDEB were used the color of the flavedo was improved and, with a 0.01 M solution, was still red after 4 weeks. An attempt to study apo-carotenal synthesis with the aid of these triethylamines was unsuccessful. The differences obtained with CDEB on Turkish oranges compared with Californian Citrus fruits suggest that it is not possible to generalize on the use of these compounds although they seem to be lycopene inducers.