Effects of Surfactants on the Herbicidal Activity of Several Herbicides in Aqueous Spray Systems

Jansen, L. L.; Gentner, W. A.; Shaw, W. C.

doi:10.2307/4040856

Cited by 77 publications

(43 citation statements)

References 21 publications

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“…This order corresponds to that observed in isolated wild onion cells for the ability of these surfactants to inhibit photosynthetic14CO2 fixation and for the release of intracellular "4C-material (18). The order is qualitatively similar to the results with "4C-material leakage from surfactant-treated soybean cells and for phytotoxic effects of these surfactants on soybean and corn, although there was no clear distinction between Daxad 21 and Tween 20 in these early tests of Jansen et al (12). In all tests the effects of Daxad 21 and Tween 20 were considerably less than Sterox SK and AHCO DD 50.…”

Section: Discussionsupporting

confidence: 76%

“…These surfactant-induced changes are manifested in a variety of effects, including inhibition of photophosphorylation (15), enhanced growth rates (11,12), and leakage from beet root disks (20) and isolated cells of soybean and wild onion (18). Because some of these effects are extremely disruptive to normal cellular development, surfactants also exhibit an inherent phytotoxicity.…”

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confidence: 99%

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Membrane-surfactant Interactions in Lipid Micelles Labeled with l-Anilino-8-naphthalenesulfonate

Miller¹,

John²

1974

Plant Physiol.

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Sonicated lipid micelles, formed from phospholipids isolated from yolks of fresh hen eggs, were used as a model membrane system for studying the effects of several surfactants on membrane properties. The interactions of the surfactants with the model system were followed through the fluorescence of the hydrophobic probe I-anilino-8-naphthalenesulfonate. The surfactants investigated were polyoxyethylene sorbitan monolaurate (Tween 20), polyoxyethylene thioether (Sterox SK), mono-calcium salt of polymerized aryl alkyl sulfonic acids (Daxad 21), and alkylbenzyl quaternary ammonium halide (AHCO DD 50). AU surfactants enhanced fluorescence of the membrane-bound probe, and the degree of this enhancement correlated with the previously established phytotoxicity of these substances. The results indicate that surfactants can produce distinct changes in artificial phospholipid membranes and suggest that this lipid interaction may account for altered membrane permeability characteristics in surfactant-treated plants. The effects are observable for surfactant concentrations as low as 0.0001 % (w/v), representing an approximate 10-fold increase in sensitivity for detecting surfactant effects compared with previous results on permeability changes in isolated plant cells.Surfactants are well known for their ability to disrupt the normal permeability characteristics of plant cells. These surfactant-induced changes are manifested in a variety of effects, including inhibition of photophosphorylation (15), enhanced growth rates (11,12), and leakage from beet root disks (20) and isolated cells of soybean and wild onion (18). Because some of these effects are extremely disruptive to normal cellular development, surfactants also exhibit an inherent phytotoxicity. A recent investigation in this laboratory has related the phytotoxicity of a number of surfactants to their ability to alter the membrane permeability of isolated plant cells (18).Even the relative simplicity of an isolated plant cell represents a complex and, to a large extent, undefined organization at the molecular level. The most commonly accepted structure of biological membranes involves a biomolecular thickness of amphipathic lipids, which serves as a fluid supportive phase ' The part of this work represented by Figures 1 and 2 was carried out by G. M. M. at

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Section: Discussionsupporting

confidence: 76%

mentioning

confidence: 99%

Membrane-surfactant Interactions in Lipid Micelles Labeled with l-Anilino-8-naphthalenesulfonate

Miller¹,

John²

1974

Plant Physiol.

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“…Concentrations higher than 0.02% and up to 5% led to a surface tension of~30 mN m -1 . Therefore, an alkyl-glucoside2 concentration of 0.1% (1 g l -1 ) was used in further experiments; this concentration is in agreement with the values suggested elsewhere for other surfactants (Jansen et al 1961;Schö nherr 2001).…”

Section: Iron Formulations Differ In Leaf Wetting Ability and Surfacementioning

confidence: 83%

Foliar Iron Fertilization of Peach (Prunus persica (L.) Batsch): Effects of Iron Compounds, Surfactants and Other Adjuvants

et al. 2006

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Experiments to assess the capability of different combinations of iron (Fe) compounds and adjuvants to provide Fe via foliar application to Fe-deficient plants have been carried out. A total of 80 formulations containing (1) one of five Fe-compounds [FeSO 4 Á7H 2 O, Fe(III)-citrate, Fe(III)-Ethylenediaminetetraacetic acid (EDTA), Fe(III)-Diethylenetriamine pentaacetic acid (DTPA), Fe(III)-Iminodisuccinic acid (IDHA)], (2) a surfactant (Mistol, alkyl-polyglucoside1 or alkyl-polyglucoside2), and (3) an adjuvant (glycerol, methanol or glycine-betaine) were studied with respect to leaf wetting ability and surface tension. From the initial formulations only 26 resulted in adequate leaf wetting, 20 with alkylpolyglucoside2 and 3 each with Mistol and alkyl-polyglucoside1, and some of them (four with alkyl-polyglucoside2, one with Mistol, and three with alkyl-polyglucoside1) were found to have inadequate surface tension values for use as foliar fertilizers. In a second experiment, 20 formulations containing alkyl-polyglucoside2 and one each of the five Fe-compounds and adjuvants listed above, were used for a foliar experiment with Fe-deficient peach trees [Prunus persica (L.) Batsch] grown under field conditions. Iron-deficient shoots were sprayed only once and leaf re-greening was assessed over 6 weeks for leaf chlorophyll content (via SPAD measurements) and percentage of green leaf area (via image analysis). Foliar Fe application always resulted in leaf Chl increases, although different degrees of re-greening were observed for the various Fe-compounds tested. Best results were obtained after treatment with formulations containing (in a decreasing order): Fe(II)-sulfate, Fe(III)-citrate, Fe(III)-EDTA, Fe(III)-IDHA, and Fe(III)-DTPA. A positive effect of adding glycerol, methanol or glycinebetaine was often observed, although the effect depended on each Fe-containing compound, indicating the existence of significant interactions between spray components. Results are of importance while trying to critically evaluate the potential of Fe sprays as a viable strategy to remedy plant Fe deficiency under field conditions.

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“…Possible mechanisms by which this is achieved include stabilization of emulsions and/or suspensions, increased retention of the active ingredient on plant surfaces, and increased wetting of plant surfaces and subsequent penetration of the active ingredient into plant tissues. However, there is evidence that surfactants do not always enhance foliar absorption of an applied compound (Jansen et al, 1961;Temple and Hilton, 1963). This ambiguity has led to several studies examining foliar absorption from specific surfactant/active ingredient combinations (Foy and Smith, 1965;Smith et al, 1966;Stevens and Bukovac, 1987b).…”

mentioning

confidence: 95%

Studies on octylphenoxy surfactants. 7. Effects of Triton X-100 on sorption of 2-(1-naphthyl)acetic acid by tomato fruit cuticles

Shafer¹,

Bukovac²

1989

J. Agric. Food Chem.

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The effects of a polyethoxy (EO) derivative of octylphenol (OP) with 9.5 ethyleneoxy groups (OP + 9.5EO) on 2-(l-naphthyl)acetic acid (NAA) sorption by cuticles enzymatically isolated from mature tomato (Lycopersicon esculentum Mill. cv. Sprinter) fruit were studied at pH 3.2 and 25 "C. Time to reach NAA sorption equilibrium by cuticular membranes (CM) or dewaxed CM (DCM) was not affected by OP + 9.5EO. At concentrations below the critical micelle concentration (CMC), OP + 9.5EO had little effect on NAA sorption. However, at concentrations above the CMC, NAA sorption was inversely related to OP + 9.5EO concentration. The amounts of NAA sorbed by CM and DCM for the lowest OP + 9.5EO concentration examined (0.001 %, w/v) were approximately 50 and 60 pmolekg-', respectively. At concentrations above 4 % , no detectable amount of NAA was sorbed by CM. Sorption of NAA by CM was inversely related to solution pH (2.2-6.2), and OP + 9.5EO (0.1%) lowered NAA sorption at all pH levels examined. The amount (micromoles per kilogram) of NAA sorbed by CM increased with increasing NAA concentration (micromolar to millimolar). OP + 9.5EO (0.1%) decreased NAA sorption by CM over the entire NAA concentration range examined.

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Effects of Surfactants on the Herbicidal Activity of Several Herbicides in Aqueous Spray Systems

Cited by 77 publications

References 21 publications

Membrane-surfactant Interactions in Lipid Micelles Labeled with l-Anilino-8-naphthalenesulfonate

Membrane-surfactant Interactions in Lipid Micelles Labeled with l-Anilino-8-naphthalenesulfonate

Foliar Iron Fertilization of Peach (Prunus persica (L.) Batsch): Effects of Iron Compounds, Surfactants and Other Adjuvants

Studies on octylphenoxy surfactants. 7. Effects of Triton X-100 on sorption of 2-(1-naphthyl)acetic acid by tomato fruit cuticles

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