Uptake of organic chemicals by plants: A review of processes, correlations and models

Paterson, Sally; Mackay, Donald; Tam, Deborah D.; Shiu, Wan Ying

doi:10.1016/0045-6535(90)90002-b

Cited by 198 publications

(93 citation statements)

References 115 publications

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“…The consequence of the occurrence of favourable alkylation conditions may be the increase in the content of especially toxic methyl and ethyl mercury, which as bioavailable forms constitute greater danger for all living organisms (Boening 2000;Han et al 2003;Tsiros and Ambrose 1999). According to Gilmour and Henry (1991) and Paterson et al (1990) even in such conditions, the share of alkyl mercury forms usually does not exceed 3 % of the total content of this metal in soils.…”

Section: Content Of Bioavailable Mercurymentioning

confidence: 99%

Bioavailability and mobility of mercury in selected soil profiles

2016

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To understand the behaviour of mercury in soils and assess the risk of its toxicity, the forms in which the element is found in the environment must be detected. In the occurrence of favourable alkylation conditions (for example in floodplain soils), the content of methyl and ethyl mercury is higher. These Hg forms in comparison with mineral compounds are toxic for the same organisms in concentrations from 10 to 100 times lower. The research concerned eight selected soil profiles representing six different types of soils (Endogleyic Phaeozem, Endogleyic Fluvisol, Eutric Fluvisol, Haplic Luvisols, Brunic Arenosol, Albic Podzol) placed in croplands. The content of mobile (water soluble), available (DTPA-extractable) and bound with organic matter (NaOH-extractable) Hg forms was determined after thermal decomposition using AMA mercury analyser. The mobility as well as availability of mercury in the analysed soils was very low, with average percentage to 0.28 and 2.45 % of the total content of this metal, respectively. It was mainly dependent on texture, the amount of organic matter and soil pH. The percentage of mercury bound with organic matter ranged from 2.34 to 73.70 % of the total content of this metal and was correlated with amount of clay and Fe oxides. Considering these results, the hazard of migration of this element into deeper horizons of the soil profile and ground water is very low. Moreover, crops from the investigated area are not at risk from mercury contamination.

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Section: Content Of Bioavailable Mercurymentioning

confidence: 99%

Bioavailability and mobility of mercury in selected soil profiles

2016

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“…Plants can take up moderately hydrophobic organics (octanolwater partition coefficients, Log K ow ) 0.5-3) quite effectively (14). Plant characteristics, such as root surface area, could substantially alter adsorption of an organic compound to roots (16). Plants not only release exudates for microbial growth or cometabolism but also harbor microbial consortia and mycorrhizal fungi on the root surface.…”

Section: Introductionmentioning

confidence: 99%

“…Plants may act directly on organic compounds via uptake of organics and transformation of the organics to less toxic metabolites and/or indirectly degrade them via the rhizosphere effect (12,13). The uptake is influenced by physicochemical properties of the compounds, plant species characteristics, and environmental conditions (12,(14)(15)(16)(17). Plants can take up moderately hydrophobic organics (octanolwater partition coefficients, Log K ow ) 0.5-3) quite effectively (14).…”

Section: Introductionmentioning

confidence: 99%

Influence of Microbial Inoculation (PseudomonasSp. Strain ADP), the Enzyme Atrazine Chlorohydrolase, and Vegetation on the Degradation of Atrazine and Metolachlor in Soil

Zhao

Arthur

Coats

2003

J. Agric. Food Chem.

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The concentrations of atrazine in the freshly added soils and the soils that had been incubated for 50 days significantly decreased 1 day after the addition of the enzyme atrazine chlorohydrolase or the soil bacterium Pseudomonas sp. strain ADP as compared with those in the uninoculated soils. Atrazine chlorohydrolase or ADP had no effect on the degradation of metolachlor. The half-lives of atrazine in the freshly added soils and in the aged soils after the treatment with atrazine chlorohydrolase or ADP markedly decreased as compared with those in the uninoculated soils. The half-lives of metolachlor in the aged soils were much longer than those of freshly added metolachlor. The percentage atrazine degraded in the freshly treated soils was much higher than that in the aged soils. This indicates that aging significantly decreased the bioavailability of atrazine. Vegetation significantly decreased the concentration of metolachlor. However, vegetation showed no effect on the degradation of atrazine. The concentrations of atrazine in the freshly added soils and the soils that had been incubated for 50 days significantly decreased 1 day after the addition of the enzyme atrazine chlorohydrolase or the soil bacterium Pseudomonas sp. strain ADP as compared with those in the uninoculated soils. Atrazine chlorohydrolase or ADP had no effect on the degradation of metolachlor. The half-lives of atrazine in the freshly added soils and in the aged soils after the treatment with atrazine chlorohydrolase or ADP markedly decreased as compared with those in the uninoculated soils. The half-lives of metolachlor in the aged soils were much longer than those of freshly added metolachlor. The percentage atrazine degraded in the freshly treated soils was much higher than that in the aged soils. This indicates that aging significantly decreased the bioavailability of atrazine. Vegetation significantly decreased the concentration of metolachlor. However, vegetation showed no effect on the degradation of atrazine.

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“…The ability of PCDD/Fs to absorb to pine needles, either via a gas-to-solid or a solid-to-solid process, is dependent on the environmental conditions (e.g., temperature and wind) and pine needle characteristics (e.g., age, wax content, surface area, lipid content, composition, and architecture) (Paterson et al 1990). Although the microclimate may vary at each sampling site, we assumed that the air temperature and wind were similar at Hangzhou Botanical Garden and the nearby site at Yuquan Campus at Zhejiang University (Fig.…”

Section: Bulk Characterization Of Pine Needlesmentioning

confidence: 99%

PCDD/Fs accumulation in pine needles: variation with species and pine needle age

Mei

Chen

Peng

2015

Environ Sci Pollut Res

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Pine needles have been used for many decades as a cheap and convenient biosampler to monitor atmospheric levels of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs), collectively known as PCDD/Fs. However, it is unknown whether accumulation of PCDD/Fs varies according to pine tree species or pine needle age, which hampers the precise application of this biosampler. We collected 0.3-2.3-year-old pine needles from four different species of pine at three sites in Hangzhou City, Zhejiang Province, China. The PCDD/Fs were quantitatively analyzed by gas chromatography high-resolution mass spectrometry. The results show that Pinus massoniana and Cedrus deodara absorbed more PCDD/Fs than Pinus thunbergii and Pinus parviflora at the same site. More cuticular wax and cuticular cell secretions in the pine needles from P. massoniana and C. deodara, as observed by scanning electron microscopy (SEM), might explain this discrepancy. The PCDD/Fs concentrations in 0.3-, 1.3-, and 2.3-year-old pine needles, indicated that concentrations increase with ascending age. This may be ascribed to the enhancement of lipids and cuticular waxes with age in pine needles as indicated by the lipid contents and morphologies observed by SEM. Our results may be useful for selecting the species and age of pine needles used for biosampling, especially for monitoring PCDD/Fs in large areas where the pine species growing in one place may differ from those in another place.

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Uptake of organic chemicals by plants: A review of processes, correlations and models

Cited by 198 publications

References 115 publications

Bioavailability and mobility of mercury in selected soil profiles

Bioavailability and mobility of mercury in selected soil profiles

Influence of Microbial Inoculation (PseudomonasSp. Strain ADP), the Enzyme Atrazine Chlorohydrolase, and Vegetation on the Degradation of Atrazine and Metolachlor in Soil

PCDD/Fs accumulation in pine needles: variation with species and pine needle age

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