Separation of Transit of Auxin from Uptake: Average Velocity and Reversible Inhibition by Anaerobic Conditions

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Science  05 May 1967:
Vol. 156, Issue 3775, pp. 661-663
DOI: 10.1126/science.156.3775.661


An applied pulse of 14C-indole-3-acetic acid moved down aerobic corn coleoptiles at about 15 millimeters per hour. When sections with a moving pulse were transferred to nitrogen, the rate fell below 2 millimeters per hour. This inhibition was completely reversible; sections returned to air moved the same amount of auxin as untreated aerobic controls.