Changes in the Level of [14C]Indole-3-Acetic Acid and [14C]Indoleacetylaspartic Acid during Root Formation in Mung Bean Cuttings

Abstract
Changes in the levels of [14C]indole-3-acetic acid (IAA) and [14C]indoleacetylaspartic acid (IAAsp) were examined during adventitious root formation in mung bean (Vigna radiata [L.] R. Wilcz. ''Berken'') stem cuttings. IAAsp was identified by GC-MS as the primary conjugate in IAA-treated cuttings. During root formation in IAA-treated cuttings, the level of [14C]IAAsp increased rapidly the first day and then declined; [14C]IAA was rapidly metabolized and not detected for 12 hours.