Light effects on endogenous levels of gibberellins in photoblastic lettuce seeds

  title={Light effects on endogenous levels of gibberellins in photoblastic lettuce seeds},
  author={T. Toyomasu and H. Tsuji and H. Yamane and M. Nakayama and I. Yamaguchi and N. Murofushi and N. Takahashi and Y. Inoue},
  journal={Journal of Plant Growth Regulation},
  • T. Toyomasu, H. Tsuji, +5 authors Y. Inoue
  • Published 2004
  • Biology
  • Journal of Plant Growth Regulation
  • Gibberellin A1 (GA1), 3-epi-GA1 GA17, GA19, GA20, and GA77 were identified by Kovats retention indices and full-scan mass spectra from gas chromatography-mass spectrometry analysis of a purified extract of mature seeds of photoblastic lettuce (Lactuca sativa L. cv. Grand Rapids). Non-13-hydroxylated GAs such as GA4 and GA9 were not detected even by highly sensitive radioimmunoassay. These results show that the major biosynthetic pathway of GAs in lettuce seeds is the early-13-hydroxylation… CONTINUE READING
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