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

Smith, F. G. Walton; Hamner, C. L.; Carlson, Robert F.

doi:10.1104/pp.22.1.58

Cited by 53 publications

(23 citation statements)

References 9 publications

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“…Much has been done on Avena coleoptiles, with apparently more or less conflicting results (4,5,6,7,8,14). In plants other than Avena, BROWN (9), SMITH, HAMNER, and CARLSON (30) have reported an acceleration of respiration by 2,4-D and a consequent depletion of food reserve. MITCHELL, BURRIS, and RIKER (23) observed a definite inhibitory effect of various growth regulators on the respiration of tomato stem slices and other stem and root tissues.…”

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Physiological and Biochemical Changes Accompanying Pollination in Orchid Flowers. Ii. Respiration, Catalase Activity, and Chemical Constituents

Hsiang

1951

Plant Physiol.

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In a previous paper of this series (19), data have been presented to show that pollination in orchid flowers brings about considerable changes in their water balance. The present paper deals with the change in respiratory activity, catalase activity, and chemical constituents as consequences of pollination and auxin treatment. The general methods used in sampling and treatment of flowers are essentially the same as that earlier described (19). A general conclusion, based on all experimental facts presented in both papers, is also given here.Respiration WHITE (35) noted an increase of respiratory rate and also of respiratory quotient after pollination in a number of plant species. A critical examination of her data, however, would seem to show that the respiratory quotient was unusually low for the non-pollinated plants, indicating that some constant errors might have been involved. Moreover, in most of the plants she used, fertilization is known to follow pollination more or less closely. It is therefore not safe to attribute the observed effects, if valid, to pollination alone. Further work is needed on the effect of pollination on respiration.In the work reported here respiration was measured as the amount of 02 taken up per unit of time per unit of dry weight. A Warburg respirometer of the constant volume type was employed. All experiments were run at 250 + 0.20 C.Preliminary study showed that when tissue sections were floated on phosphate buffer solution at a pH of 5.8 the liquid tended to enter the intercellular spaces and gave the tissues a translucent appearance. Therefore, the use of the buffer solution was omitted and the tissues were put directly into the flasks without any added liquid. Two tenths of a milliliter of 20% KOH on filter paper was used in the center well. After equilibration, readings were taken at 15-or 30-minute intervals until several constant values had been obtained. An average reading of four to six intervals was usually taken to represent the respiration value.The respiratory quotient was obtained by using the same sample in the same flask, instead of using two separate flasks. Readings were first taken without KOH in the center well; KOH was then added and readings were I Present address:

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“…Two tenths of a milliliter of 20% KOH on filter paper was used in the center well. After equilibration, readings were taken at 15-or 30-minute intervals until several constant values had been obtained. An average reading of four to six intervals was usually taken to represent the respiration value.…”

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Physiological and Biochemical Changes Accompanying Pollination in Orchid Flowers. Ii. Respiration, Catalase Activity, and Chemical Constituents

Hsiang

1951

Plant Physiol.

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“…of the tryptophan sample which was prepared according to the method of WOOLEY and SEBRELL (13). The analyses for carbohydrates were made by the procedure outlined by SELL, JOHNSON and LAGASSE (10) (5,8,11). The depletion of reducing and non-reducing sugar and the utilization of the starch reserves and the large increase in protein in the stems of plants treated with 2, 4-D indicate that most of the carbohydrates are used in protein synthesis.…”

Section: Samples Of Stem Tissuementioning

confidence: 99%

“…It has been shown (2,5,8,11) that treatment of plants with 2, 4-D results in a reduction in carbohydrate content and an accumulation of nitrogen. Investigators (4, 6,) have reported that some plants sprayed with solutions of 2, 4-D develop enlarged and proliferated tissues, noted primarily in the stems.…”

Section: Introductionmentioning

confidence: 99%

Changes in Chemical Composition of the Stems of Red Kidney Bean Plants Treated With 2, 4-Dichlorophenoxyacetic Acid

Sell¹,

Luecke²,

Taylor³

et al. 1949

Plant Physiol.

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“…Investigators (2, 6,7,11) have shown that there is a depletion of carbohydrates and an accumulation of nitrogen in plants treated with 2, 4-dichlorophenoxyacetic acid (2, 4-D). SELL et al (10) have observed similar trends in the abnormally proliferated stem tissue of red kidney bean plants treated with 2, 4-D.…”

Section: Introductionmentioning

confidence: 99%

Changes in Chemical Composition of the Leaves and Roots of Red Kidney Bean Plants Treated With 2, 4-Dichlorophenoxyacetic Acid

Weller

Luecke²,

Hamner³

et al. 1950

Plant Physiol.

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

Cited by 53 publications

References 9 publications

Physiological and Biochemical Changes Accompanying Pollination in Orchid Flowers. Ii. Respiration, Catalase Activity, and Chemical Constituents

Physiological and Biochemical Changes Accompanying Pollination in Orchid Flowers. Ii. Respiration, Catalase Activity, and Chemical Constituents

Changes in Chemical Composition of the Stems of Red Kidney Bean Plants Treated With 2, 4-Dichlorophenoxyacetic Acid

Changes in Chemical Composition of the Leaves and Roots of Red Kidney Bean Plants Treated With 2, 4-Dichlorophenoxyacetic Acid

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