Decapitation Reduces the Metabolism of Gibberellin A20 to A1 in Pisum sativum L., Decreasing the Le/le Difference.
When the metabolism of [13C,3H]gibberellin (GA)20 in Pisum sativum L. was investigated using decapitated plants and stem sections, no evidence was obtained for the recently postulated inhibitor of GA20 3[beta]-hydroxylase (V.A. Smith [1992] Plant Physiol 99: 372-377). Instead, the results are consistent with the hypothesis that the mutation le reduces GA1 production by altering the structure or level of the 3[beta]-hydroxylase.
Sherriff
L. J.
LJ
Department of Plant Science, University of Tasmania, Hobart, Tasmania 7001, Australia (L.J.S., M.J.M., J.J.R., J.B.R.).
McKay
M. J.
MJ
Ross
J. J.
JJ
Reid
J. B.
JB
Willis
C. L.
CL