Atmospheric phenanthrene transfer and effects on two grassland species and their root symbionts: A microcosm study

Desalme, Dorine; Binet, Philippe; Bernard, Nadine; Gilbert, Daniel; Toussaint, Marie‐Laure; Chiapusio, Geneviève

doi:10.1016/j.envexpbot.2010.11.009

Cited by 29 publications

(20 citation statements)

References 44 publications

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“…Similar phenomenon was found in our previous study [54] when seasonal pattern of rural particulate matter was investigated. It was explained by the nutrient content (N, S, and microelements) which might mask the toxic effect of the sample.…”

Section: Discussionsupporting

confidence: 90%

Effects of urban atmospheric particulate matter on higher plants using Lycopersicon esculentum as model species

2021

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Atmospheric particulate matter (PM) is one of the major environmental concerns in Europe. A wide range of studies has proved the ecotoxic potential of atmospheric particles. PM exerts chemical stress on vegetation by its potentially toxic constituents; however, relatively few studies are available on assessing phytotoxic effects under laboratory conditions. In our study, aqueous extract of particulate matter was prepared and used for treatment. Experiment was following the procedure defined by the No. 227 OECD Guideline for the Testing of Chemicals: Terrestrial Plant Test. Tomato (Lycopersicon esculentum Mill.) plants were used; elucidated toxicity was assessed based on morphological and biochemical endpoints such as biomass, chlorophyll-a and chlorophyll-b, carotenoids, and protein content. Biomass reduction and protein content showed a clear dose–effect relationship; the biomass decreased in comparison with the control (100%) in all test groups (TG) at a steady rate (TG1: 87.73%; TG2: 71.77%; TG3: 67.01%; TG4: 63.63%). The tendency in protein concentrations compared to the control was TG1: 113.61%; TG2: 148.21% TG3: 160.52%; TG4: 157.31%. However, pigments showed a ‘Janus-faced’ effect: nutrient content of the sample caused slight increase at lower doses; actual toxicity became apparent only at higher doses (chlorophyll-a concentration decrease was 84.47% in TG4, chlorophyll-b was 77.17%, and finally, carotene showed 83.60% decrease in TG4).

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Section: Discussionsupporting

confidence: 90%

Effects of urban atmospheric particulate matter on higher plants using Lycopersicon esculentum as model species

2021

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“…A small part of PHE may have been sorbed onto the root epidermis, more precisely near the suberized exodermis and endodermis (Dupuy et al, 2016). Previous studies show preferential PAH incorporation in shoots through atmospheric deposition, and low direct incorporation by roots (Binet et al, 2000a;Desalme et al, 2011;Schwab and Banks, 1994). If 13 C was not taken up by the roots under the form of PHE, it may have been taken up under the form of newly formed organic compounds or 13 C-CO 2 .…”

Section: Dynamics Of Phenanthrene Carbon In the Plant-soil Mesocosmsmentioning

confidence: 99%

Dynamics of PAHs and derived organic compounds in a soil-plant mesocosm spiked with 13C-phenanthrene

et al. 2017

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Polycyclic Aromatic Hydrocarbons (PAHs) are ubiquitous and persistent soil pollutants. Their fate and the influence of the plant rhizosphere on their dynamics has been extensively studied, but studies mainly focused on their dissipation rate. We conducted a plant-soil mesocosm experiment to study the fate and distribution of PAHs or derived compounds in the extractable fraction, the residual soil, the shoot biomass and the root biomass. The experiment was conducted for 21 days using ryegrass and a forest soil spiked with C-labeled phenanthrene (PHE), using combined IRMS and NanoSIMS for analyses. Almost 90% of the initial extractable PHE content was dissipated within 3 weeks, but no rhizospheric effect was highlighted on PHE dissipation. More than 40% ofC-PHE was still in the soil at the end of the experiment, but not as PHE or PAH-derived compounds. Therefore it was under the form of new compounds (metabolites) and/or had been incorporated into the microbial biomass. About 0.36% of the initial C-PHE was recovered in the root and shoot tissues, representing similarC enrichment (EC) as in the soil (EC ≈ 0.04 at.%). Using NanoSIMS, C was also localized at the microscale in the roots and their close environment. GlobalC enrichment confirmed the results obtained by IRMS. Some hotspots of C enrichment were found, with a highS/CN ratio. Comparing the ratios, sizes and shapes of these hotspots suggested that they could be bacteria.

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“…To evaluate the pathway-specific uptake of SOCs in plants in a soil–air–plant system, several types of exposure chambers (ECs) have been designed to provide a controllable and relatively stable environment. − Although it is sometimes difficult to extrapolate the results from chamber studies to field investigations because small-scale chamber experiments cannot entirely mimic the same environmental conditions as the outside world, chamber studies have contributed to better elucidation of the fate of SOCs, such as polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and formaldehyde in plants. − …”

Section: Introductionmentioning

confidence: 99%

Uptake Pathway, Translocation, and Isomerization of Hexabromocyclododecane Diastereoisomers by Wheat in Closed Chambers

Zhu

Sun

Yan-wei

et al. 2016

Environ. Sci. Technol.

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To study the uptake pathways of 3 main hexabromocyclododecane diastereoisomers (α-, β-, and γ-HBCDs) in wheat, four closed chambers were designed to expose wheat to HBCDs via air and/or soil for 4 weeks. The results showed that HBCDs could be absorbed by wheat both via root from soil and via leaf from air. The Rt values (ratio of HBCDs from root-to-leaf translocation to the total accumulation in leaves) ranging from 14.4 to 29.8% suggested that acropetal translocation within wheat was limited. A negative linear relationship was found between log Rt and log Kow of the HBCD diastereoisomers (p < 0.05). The bioconcentration factors (BCFs, (μg/g wheat tissues)/(μg/g soil)) were in the order α- > β- > γ-HBCD in wheat roots and stems, being negatively related to their Kow values. No such correlation was found in leaves, where the HBCDs came mainly from air distribution. The results of enantiomeric fractions indicated that the (-)-enantiomer of α- and γ-HBCDs and the (+)-β-enantiomer were selectively accumulated. Furthermore, β- and γ-HBCDs were transformed to α-HBCD in the wheat, with 0.309-4.80% and 0.920-8.40% bioisomerization efficiencies at the end of the experiment, respectively, being the highest in leaves. Additionally, no isomerization product from α-HBCD was found.

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Atmospheric phenanthrene transfer and effects on two grassland species and their root symbionts: A microcosm study

Cited by 29 publications

References 44 publications

Effects of urban atmospheric particulate matter on higher plants using Lycopersicon esculentum as model species

Effects of urban atmospheric particulate matter on higher plants using Lycopersicon esculentum as model species

Dynamics of PAHs and derived organic compounds in a soil-plant mesocosm spiked with 13C-phenanthrene

Uptake Pathway, Translocation, and Isomerization of Hexabromocyclododecane Diastereoisomers by Wheat in Closed Chambers

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