Histological Changes in Bindweed and Sow Thistle Following Applications of 2,4-Dichlorophenoxyacetic Acid in Herbicidal Concentrations

Tukey, H. B.; Hamner, C. L.; Imhofe, Barbara

doi:10.1086/335328

Cited by 34 publications

(18 citation statements)

References 4 publications

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“…Changes in total sugars and starch-dextrins in the stem were similar to those in the leaves though neither the initial increase nor final decrease was so large. The nitrogen content, however, increased significantly above the controls, as would be expected from the histological evidence of meristematic activity in the stem (18). There was, likewise, a rise in total sugars in the roots and rhizomes of treated plants reaching a maximum about the seventh day in this case and again followed by a decrease.…”

Section: Resultssupporting

confidence: 50%

“…The plants and their treatments were similar to those used in the previous work at this Station (8,18) and the experiments were carried out in the same fields. Three trials were made, two of which were analyzed in detail, the first in July and the second in August, 1945.…”

Section: Methodsmentioning

confidence: 99%

“…The least significant difference at the 5% level between samples for several experiments similar to that in table I was found to be about 0.10 microliters per hour per mg. fresh weight. Samples of the material from which the slices were cut were fixed and sections prepared as in the previous work (18). …”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Changes in Food Reserves and Respiratory Capacity of Bindweed Tissues Accompanying Herbicidal Action of 2,4—Dichlorophenoxyacetic Acid

Smith

Hamner²,

Carlson³

1947

Plant Physiol.

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Section: Resultssupporting

confidence: 50%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Changes in Food Reserves and Respiratory Capacity of Bindweed Tissues Accompanying Herbicidal Action of 2,4—Dichlorophenoxyacetic Acid

Smith

Hamner²,

Carlson³

1947

Plant Physiol.

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“…Auxin 'herbicides have been picturesquely described as causing some plants to "proliferate themselves to death" (1). Such cell proliferation is especially noticeable in phloem tissue (8,34). Jablonski and Skoog (17) showed that vascular tissue is a source of kinin.…”

Section: Haber-auxin Action On Growth and On Mitosismentioning

confidence: 99%

Effects of Indoleacetic Acid on Growth Without Mitosis & on Mitotic Activity in Absence of Growth by Expansion

Haber

1962

Plant Physiol.

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“…Histological examinations and area estimations were made on sections from the same stem samples fixed and stained with safranine and fast-green (30).' Typical sections were projected, traced on uniform drawing paper, and the relative areas of meristematic tissue estimated by cutting out and weighing the appropriate pieces.…”

mentioning

confidence: 99%

The Effect of 2,4-Dichlorophenoxyacetic Acid on the Respiratory Metabolism of Bean Stem Tissue

Smith

1948

Plant Physiol.

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Phytohormones or auxins are now important agents for growth control in the fields of both pure and applied physiology (32). Their practical application in agriculture is increasing rapidly in variety and importance and their use, along with modern biochemical methods, promises great progress in the understanding of fundamental growth processes. One of the chief basic problems, the relation of respiratory mechanisms to growth, is the general subject of the present investigation of the effect of 2,4-dichlorophenoxyacetic acid (2,4-D) on the respiration of bean stem tissue.There is already considerable evidence of a close relation between the growth-promoting action of auxins and changes in respiration. BONNER (7) first pointed out such a relation between auxin-induced elongation in Avena coleoptile and respiratory stimulation. THIMANN and co-workers (11, 29) later associated this auxin action with an iodoacetate-sensitive fraction of respiration which inv(lved the metabolism of the 4-carbon-diearboxylic acids and which seemed to control the rate of elongation and cyclosis. BERGER and AVERY (6) have further demonstrated that the activities of at least two dehydrogenases in Avena are increased following auxin treatment. It has also been shown with a variety of tissues that auxins can stimulate the nonosmotic uptake of water and salts which depends upon respiratory energy (18,32,33). In the case of bean seedlings there is abundant evidence (1,20,21, 22) of metabolic changes which must involve respiratory stimulation and in the case of 2,4-D treatment, specifically, BROWN (8) has recently shown an actual increase in the rate of CO2 evolution in whole seedlings following treatment.Though there has been extensive study of the relation of growth stimulation and respiration in the Avena coleoptile where elongation is involved, there has been relatively little investigation of tissues where cell division predominates. The bean seedling was chosen as an example of the latter type of response for the present work because there has been considerable study of its general physiological and histological response to auxin treatment, including 2,4-D, by the Chicago and Beltsville groups (1,3,4,8,16,20,21, 22) and because abundant material for biochemical analysis can be produced conveniently. This report covers exploratory investigations of changes in respiratory characteristics of bean stem slices caused by 2,4-D

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Histological Changes in Bindweed and Sow Thistle Following Applications of 2,4-Dichlorophenoxyacetic Acid in Herbicidal Concentrations

Cited by 34 publications

References 4 publications

Changes in Food Reserves and Respiratory Capacity of Bindweed Tissues Accompanying Herbicidal Action of 2,4—Dichlorophenoxyacetic Acid

Changes in Food Reserves and Respiratory Capacity of Bindweed Tissues Accompanying Herbicidal Action of 2,4—Dichlorophenoxyacetic Acid

Effects of Indoleacetic Acid on Growth Without Mitosis & on Mitotic Activity in Absence of Growth by Expansion

The Effect of 2,4-Dichlorophenoxyacetic Acid on the Respiratory Metabolism of Bean Stem Tissue

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