Large quantities of ent-kaur-16-ene accumulated in the scutella of wheat and barley seedlings treated with the ent-kaurene oxidase inhibitor, (2S, 3S)-paclobutrazol. In addition, ent-3 beta-hydroxykaur-16-ene and ent-17-hydroxykaur-15-ene were identified by full-scan GC mass spectrometric comparison with authentic samples in embryos of paclobutrazol-treated wheat. In four-day-old paclobutrazol-treated wheat, ent-3 beta-hydroxykaur-16-ene occurred in similar amounts to ent-kaur-16-ene in embryonic axes but was about 10-fold less than the quantity of ent-kaur-16-ene in scutella. By comparison, ent-17-hydroxykaur-15-ene was present at very low levels and only in scutella of treated wheat seedlings. Only trace amounts of ent-3 beta-hydroxykaur-16-ene were detected in scutella of paclobutrazol-treated barley.
|Number of pages||4|
|Publication status||Published - May 1995|