Studies in plant metabolism. II. The metabolism of C14-labeled 2,4-dichlorophenoxyacetic acid in bean plants

Jaworski, Ernest G.; Butts, Joseph S.

doi:10.1016/0003-9861(52)90025-8

Cited by 42 publications

(23 citation statements)

References 13 publications

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“…When applied to leaves or stems, this compound was absorbed and translocated both upward and downward within the plant. It moved down into the roots and out of them and was absorbed by adjacent or nearby roots of an untreated plant; then it moved upward in the stem of this plant to partially developed leaves which subsequently became malformed (7). This phenomenon of plant regulators moving out of roots, however, is uncommon (7).…”

Section: Literature Citedmentioning

confidence: 99%

“…It moved down into the roots and out of them and was absorbed by adjacent or nearby roots of an untreated plant; then it moved upward in the stem of this plant to partially developed leaves which subsequently became malformed (7). This phenomenon of plant regulators moving out of roots, however, is uncommon (7). MOPA moved from various kinds of bean plants to other bean plants and from other broadleaved plants to bean, causing malformation and inhibition of new growth.…”

Section: Literature Citedmentioning

confidence: 99%

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Studies on 3-Indoleacetic Acid Metabolism. IV. Conjugation with Aspartic Acid and Ammonia as Processes in the Metabolism of Carboxylic Acids.

Andreae

Good

1957

Plant Physiol.

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Section: Literature Citedmentioning

confidence: 99%

Section: Literature Citedmentioning

confidence: 99%

Studies on 3-Indoleacetic Acid Metabolism. IV. Conjugation with Aspartic Acid and Ammonia as Processes in the Metabolism of Carboxylic Acids.

Andreae

Good

1957

Plant Physiol.

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“…Although a portion of the applied growth-regulator is rapidly transformed into a variety of products (5,15,16), a significant amount may remain unaltered for at least 42 days (6). Less direct evidence of persistence of an active growth-regulator has been provided also by observations of protracted morphological responses in cotton (4,7,8) and of long delayed fruit abscission in apple (10).…”

mentioning

confidence: 99%

Metabolism of 2,4-Dichlorophenoxyacetic Acid. III. Metabolism and Persistence in Dormant Plant Tissue.

Weintraub¹,

Reinhart²,

Scherff³

et al. 1954

Plant Physiol.

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“…Further evidence of the identity of the 2,4-D was given when a known amount of 2,4-D was added to the plant extract. The subsequent determination of the radioactivity of the paper chroma- In an earlier report from this laboratory (6) it was found that the unknown 1 formed in bean plants is a 2,4-D complex since treatment with dilute acid or emulsin released free 2,4-D. Unknown 3, when treated in a like manner, also gave free 2,4-D.…”

mentioning

confidence: 99%

“…In a continuation of this study (6) The plants harvested on the first and third days were treated on the second leaves and the plants harvested on the fifth and eighth days were treated on the first leaves. The treated leaves were discarded.…”

mentioning

confidence: 99%

Studies in Plant Metabolism. III. Absorption, Translocation and Metabolism of Radioactive 2,4-D in Corn and Wheat Plants.

Fang¹,

Butts²

1954

Plant Physiol.

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The use of 2,4-dichlorophenoxyacetic acid (2,4-D) as a selective herbicide has become quite extensive. In general, dicotyledonous plants are more sensitive to 2,4-D treatment than are most plants of the monocotyledonous types (7), although very little is known regarding the factors responsible for the difference in sensitivity. Recently, by using an isotopically labeled herbicide, Wood et al. (10) found that bean plants absorbed and translocated 2-iodo13"-3-nitrobenzoic acid (INBA) more readily than barley plants. Later, Mitchell et al. (8) extended their work to oat and corn plants. They suggested that the growth-inhibiting effect of INBA in the bean plant and its failure to produce significant inhibition in barley, oat and corn plants might be due to the differences in the manner in which INBA reacts with the plant constituents in each case.Gallup and Gustafson (3) using 2,4-dichloro-5-iodo'3l-phenoxyacetic acid were also able to demonstrate that the absorption of this growth regulator by the monocotyledonous plants is slower than by the dicotyledonous ones. The translocation to the apical portion of the plant is very rapid in broadleaved plants, but much less rapid in the grasses.Holley, Boyle and Hand (4) using carboxyl-C14-labeled 2,4-D demonstrated the presence of free 2,4-D in bean plant homogenate. Later Holley (5) using the same labeled preparation was able to show the presence of an ether-insoluble, water-soluble compound. Weintraub et al. (9), by using either carboxyl-or methylene-Cl4-labeled 2,4-D, demonstrated that the C14 from the applied 2,4-D in bean plants is incorporated into other substances within a few days. The radioactive carbon becomes distributed among a variety of plant constituents, including acids, sugar, dextrins, starch, pectin, protein and cell wall substances.In a publication from this laboratory (2) it was found that with bean plants the radioactive 2,4-D was readily absorbed and the radioactivity was found in various parts of the bean plant. In a continuation of this study (6) hours. An aliquot of each ground sample was analyzed for C14 by the usual wet combustion procedure.

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Studies in plant metabolism. II. The metabolism of C14-labeled 2,4-dichlorophenoxyacetic acid in bean plants

Cited by 42 publications

References 13 publications

Studies on 3-Indoleacetic Acid Metabolism. IV. Conjugation with Aspartic Acid and Ammonia as Processes in the Metabolism of Carboxylic Acids.

Studies on 3-Indoleacetic Acid Metabolism. IV. Conjugation with Aspartic Acid and Ammonia as Processes in the Metabolism of Carboxylic Acids.

Metabolism of 2,4-Dichlorophenoxyacetic Acid. III. Metabolism and Persistence in Dormant Plant Tissue.

Studies in Plant Metabolism. III. Absorption, Translocation and Metabolism of Radioactive 2,4-D in Corn and Wheat Plants.

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