Effects of gibberellic Acid on endogenous indole-3-acetic Acid and indoleacetyl aspartic Acid levels in a dwarf pea.
Two-week-old dwarf peas (Pisum sativum cv Little Marvel) were sprayed with gibberellic acid (GA(3)), and after 3 or 4 days the upper stem and young leaf samples were analyzed for indole-3-acetic acid (IAA) and indole-3-acetyl aspartic acid by an isotope dilution high performance liquid chromatography method. GA(3) increased IAA levels as much as 8-fold and decreased indole-3-acetyl aspartic acid levels.
Law
D M
DM
Department of Biology, The Pennsylvania State University, University Park, Pennsylvania 16802.
Hamilton
R H
RH