Uptake, translocation and metabolism of anthracene in bush bean (<i>Phaseolus Vulgaris</i> L.)

Edwards, Nelson T.

doi:10.1002/etc.5620050706

Cited by 11 publications

(6 citation statements)

References 5 publications

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“…Uptake of the chlorobenzenes into the plant tissues was rapid. For the CB-1 mixture, from 30% to 65% of all chemical was taken up in the first 2 h. This is consistent with the results of Wolf et al [13] for uptake of chlorobenzenes by shoots of aquatic plants and of Edwards [28] who studied uptake of anthracene and 1,2,4-TCB by living roots of beans and found that approximately 75% of the final quantity absorbed was taken up in the first 2 h. This fast uptake is also consistent with results reported by Moody [15] for barley, by McFarlane et al [20] for soybean, and Briggs et al [29] for roots of barley. Figure 5, which is a plot of log K B versus log K OW , shows that K B increases significantly with K OW .…”

Section: Resultssupporting

confidence: 90%

Uptake of chlorobenzenes by tissues of the soybean plant: Equilibria and kinetics

Tam

Shiu

Qiang

et al. 1996

Enviro Toxic and Chemistry

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Measurements are reported of the uptake equilibria and kinetics of seven chlorobenzenes: 1,2–dichlorobenzene, 1,3–di‐chlorobenzene, 1,2,4–trichlorobenzene, 1,2,3,4–tetrachlorobenzene, 1,2,3,5–tetrachlorobenzene, pentachlorobenzene, and hexachloro‐benzene from water into tissues (leaves, petioles, stems, and roots) of 6–8–week‐old soybean plants, Glycine max L. Equilibrium was reached within 1–4 days, with uptake of the more hydrophobic chemicals being slightly slower. Aqueous solubilities of three of these chlorobenzenes are reported. Linear correlations were obtained between the equilibrium tissue‐water partition coefficients, the chemicals' octanol‐water partition coefficients and the measured lipid contents. A correlation approach is proposed that may be useful for assessment of the extent of uptake of persistent hydrophobic chemicals by plants from soil and the atmosphere.

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Section: Resultssupporting

confidence: 90%

Uptake of chlorobenzenes by tissues of the soybean plant: Equilibria and kinetics

Tam

Shiu

Qiang

et al. 1996

Enviro Toxic and Chemistry

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“…Enhanced polycyclic aromatic hydrocarbon (PAH) degradation during phytoremediation has stimulated interest regarding the responsible mechanisms (Aprill and Sims, 1990; Gunther et al ., 1996; Reilley et al ., 1996; Banks et al ., 1999; Binet et al ., 2000; Liste and Alexander, 2000; Miya and Firestone, 2000). The hydrophobic nature of PAHs prevents significant uptake and translocation within plants (Edwards, 1986; Burken and Schnoor, 1998), so these contaminants generally remain in the root zone. This suggests that plant roots stimulate microbial populations for enhanced biodegradation.…”

Section: Introductionmentioning

confidence: 99%

Repression of Pseudomonas putida phenanthrene‐degrading activity by plant root extracts and exudates

Rentz

Alvarez

Schnoor

2004

Environmental Microbiology

135

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The phenanthrene-degrading activity (PDA) of Pseudomonas putida ATCC 17484 was repressed after incubation with plant root extracts of oat (Avena sativa), osage orange (Maclura pomifera), hybrid willow (Salix alba x matsudana), kou (Cordia subcordata) and milo (Thespesia populnea) and plant root exudates of oat (Avena sativa) and hybrid poplar (Populus deltoides x nigra DN34). Total organic carbon content of root extracts ranged from 103 to 395 mg l(-1). Characterization of root extracts identified acetate (not detectable to 8.0 mg l(-1)), amino acids (1.7-17.3 mg l(-1)) and glucose (1.6-14.0 mg l(-1)), indicating a complex mixture of substrates. Repression was also observed after exposure to potential root-derived substrates, including organic acids, glucose (carbohydrate) and glutamate (amino acid). Carbon source regulation (e.g. catabolite repression) was apparently responsible for the observed repression of P. putida PDA by root extracts. However, we showed that P. putida grows on root extracts and exudates as sole carbon and energy sources. Enhanced growth on root products may compensate for partial repression, because larger microbial populations are conducive to faster degradation rates. This would explain the commonly reported increase in phenanthrene removal in the rhizosphere.

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“…Chlomethoxynil, a nitrile class of herbicide, is prone to conjugation at the nitro group (Niki et al 1976); this can involve simple conjugation to form amino and diantino derivatives, or the formation of immobile conjugates with lipids and lignin. Anthracene absorbed by roots (Edwards 1986) was shown to be chemically altered in roots 91% of the time and leaves 99% of the time in bushbean. These modified forms were shown to be as polar metabolites (29%), nonpolar metabolites (18%), and non-extractable incorporated forms (53%).…”

Section: Metabolism Of Organic Residuesmentioning

confidence: 99%

Estimation of aerial deposition and foliar uptake of xenobiotics: Assessment of current models

Link¹,

Fellows²,

Cataldo³

et al. 1987

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The primary objective of this report was to review existing mathematical and/or computer simulation models that can be used to estimate xenobiotic deposition to and transport through (both cuticular and stomatal) vegetative surfaces. The secondary objective was to evaluate the potential for coupling the best of those models to the existing UTAB (Uptake, Translocation, Accumulation, and Biodegradation) model to be used for future xenobiotic exposure assessments. Here xenobiotic compounds are defined as airborne contantinants, both organic particulate and gaseous pollutants, that are introduced into the environment by man. In an attempt to simplify a portion of complexity of the question posed, a review of several potential classification systems for organic xenobiotics is also provided. Specifically this document provides a detailed review of the state-of-the-art models that addressed: I) aerial deposition of particles and gases to foliage; 2) foliar and cuticular transport, metabolism, and uptake of organic xenobiotics; and 3) stomatal transport of gaseous and volatile organic xenobiotic pollutants. Where detailed information was available, parameters for each model are provided on a chemical by chemical as well as species by species basis. Sufficient detail is provided on each model to assess the potential for adapting or coupling the model to the existing UTAB plant exposure model. Based solely on the literature evaluation, mathematical linking of these models is possible; however, the immediate utility of this "master" model would be questionable. The inability to adequately link these models at this time results from either a lack of empirical data for specific types of xenobiotics, and/or a lack of detailed understanding of controlling processes in the plant. Specific models are identified and recommendations for further research are provided for each area: I) wet and dry aerial deposition of xenobiotics; 2) foliar adsorption and cuticular transport of or garlic xenobiotics; and 3) stomatal transport of gaseous and volatile organic pollutants.

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Uptake, translocation and metabolism of anthracene in bush bean (Phaseolus Vulgaris L.)

Cited by 11 publications

References 5 publications

Uptake of chlorobenzenes by tissues of the soybean plant: Equilibria and kinetics

Uptake of chlorobenzenes by tissues of the soybean plant: Equilibria and kinetics

Repression of Pseudomonas putida phenanthrene‐degrading activity by plant root extracts and exudates

Estimation of aerial deposition and foliar uptake of xenobiotics: Assessment of current models

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