Absorption, distribution, & metabolism of 2,2-dichloropropionic acid in relation to phytotoxicity. I. Penetration & translocation of Cl³⁶- and C¹⁴-labeled dalapon

Absorption, distribution, & metabolism of 2,2-dichloropropionic acid in relation to phytotoxicity. II. Distribution & metabolic fate of dalapon in plants.

“…As in the studies reported earlier (8). the following radiolabeled chemicals were used in treating plants or plant material: A: purified 2,2-dichloropropionic acid-Cl36 in acetone (12.78 uc/nmmole converted to the sodium salt in aqueous solution before application to plants; B: 96 %; Na-2,2-diclhloropropionate-2-CI4 (0.98 mc/mM); 78 % Na-2,2-dichloropropionate-2-C14 (0.98 mc/mM).…”

“…The general techniques and materials employed in these studies have been described (8,9). Radioautography, counting, extraction and fractionation.…”

“…P'atterns of absorption and initial translocation of ClI"'-and C'4-laheled 2,2-dichloropropionic acid (dalaponl) in both tolerant and susceptible species wrere dlescribe(d earlier (8). Of equal or perhaps more importance in understanding the physiological action of growth regulators are the long-term translocation, re-distribution, accumulation, and metabolic fate of the compound in association with plant tissues.…”

“…29, 30, 31). The direct loss of various substances fronm roots or other plant parts may also occur (4,5,8,14,16,26).…”

“…1 Received revised manuscript May 10, 1961. Prior to the present series of experiments (6,8), none of the foregoing topics had been investigated Nwith respect to dalapon. Herein are reported the results of several studies on the distributional and metabolic fate of dalapon in association with plant tissues.…”