Phytohormones, Rhizobium Mutants, and Nodulation in Legumes 1: III. Auxin Metabolism in Effective and Ineffective Pea Root Nodules

摘要

High specific activity [3H]indole-3-acetic acid (IAA) was applied to the apical bud of intact pea (Pisum sativum L. cv Greenfeast) plants. Radioactivity was detected in all tissues after 24 hours. More radioactivity accumulated in the nodules than in the parent root on a fresh weight basis and more in effective (nitrogen-fixing) nodules than in ineffective nodules (which do not fix nitrogen).