Root Disfunction in Honeyvine Milkweed Caused by 2,4-D

Foliar applications of (2,4-dichlorophenoxy)acetic acid (2,4-D) to both field- and greenhouse-grown honeyvine milkweed (Ampelamus albidus (Nutt.) Britt.) caused 22% and 36% reduction in starch in roots at 2 and 3 days after treatment, respectively. No changes in soluble sugars occurred during the period, but protein had increased by 35% and 80% on the two respective dates. No increase in α-amylase was measured. Leakage of nucleotides and α-amylase from root sections began 2 days after treatment. A 20 to 30-fold increase in cellulase activity occurred in roots of treated plants starting 2 days after treatment.

[1]  D. Osborne,et al.  Cell Growth and Cellulases: Regulation by Ethylene and Indole-3-acetic Acid in Shoots of Pisum sativum , 1969, Nature.

[2]  J. B. Hanson,et al.  Alteration of Messenger RNA and Ribosome Synthesis in Soybean Hypocotyl by 2,4-Dichlorophenoxyacetic Acid , 1969, Botanical Gazette.

[3]  J. B. Hanson,et al.  Role of RNA metabolism in the action of auxin-herbicides , 1969 .

[4]  F. Slife,et al.  Physiological Changes Accompanying the Death of Cocklebur Plants Treated with 2,4-D , 1968, Weed Science.

[5]  H. H. Clum.  Formation of amylase in disks of bean hypocotyl. , 1967, Plant physiology.

[6]  R. Dengler,et al.  Relation of 2,4-D-Induced Growth Aberrations to Changes in Nucleic Acid Metabolism in Soybean Seedlings , 1966, Botanical Gazette.

[7]  R. L. Wain,et al.  Effects of Growth-Regulating Substances on Inulin-Storing Plant Tissues , 1964, Nature.

[8]  M. C. Williams,et al.  Absorption and translocation of 2,4-D in several annual broadleaved weeds. , 1960 .

[9]  P. Bernfeld,et al.  [17] Amylases, α and β , 1955 .

[10]  O. H. Lowry,et al.  Protein measurement with the Folin phenol reagent. , 1951, The Journal of biological chemistry.

[11]  L. W. Rasmussen.  The Physiological Action of 2,4-Dichlorophenoxyacetic Acid on Dandelion, Taraxacum officinale. , 1947, Plant physiology.

[12]  R. Carlson,et al.  Changes in Food Reserves and Respiratory Capacity of Bindweed Tissues Accompanying Herbicidal Action of 2,4-Dichlorophenoxyacetic Acid. , 1947, Plant physiology.

[13]  J. W. Mitchell,et al.  Effect of 2,4-Dichlorophenoxyacetic Acid on the Readily Available Carbohydrate Constitutents in Annual Morning-Glory , 1945, Botanical Gazette.