Effect and localization of phenanthrene in maize roots

Dupuy, Joan; Leglize, Pierre; Vincent, Quentin; Zelko, Ivan; Mustin, Christian; Ouvrard, Stéphanie; Sterckeman, Thibault

doi:10.1016/j.chemosphere.2016.01.102

Cited by 30 publications

(14 citation statements)

References 32 publications

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“…However, according to NanoSIMS analyses (Figure 4), there was no evidence of direct PHE uptake by plant roots. 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).…”

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

confidence: 98%

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

confidence: 98%

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

et al. 2017

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“…The increment in root thickness was also confirmed for Pisum sativum L. and Z. mays plants treated with fluoranthene (Kummerová et al, 2013). In maize, PHE induced the extensive suberization of endo-and exodermises as a protective response by the plant for reduction of PHE penetration into roots (Dupuy et al, 2016).…”

Section: Growth Parametersmentioning

confidence: 59%

“…ex Steud. (Nie et al, 2010;Dupuy et al, 2016). The same results with increasing R/S ratio were acquired in Medicago sativa L., clover and maize impressed by PAHs (Desalme et al, 2011;Dupuy et al, 2015;Salehi-Lisar & Deljoo, 2015;Afegbua & Batty, 2018).…”

Section: Growth Parametersmentioning

confidence: 63%

“…There have been plenty of studies concerning the toxicity of PAHs on plants. It appears that all stages of plant growth and development can be influenced by PAHs, such as morphological, cytological, genetical, and metabolic disorders (Tomar & Jajoo, 2014;Dupuy et al, 2016). Inhibition of seed germination, reduction in biomass production, induction of oxidative stress, and disruption in photosynthetic apparatus function are some proven effects of PAHs on plants (Li et al, 2008;Liu et al, 2009;Tomar & Jajoo, 2014).…”

Section: Introductionmentioning

confidence: 99%

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High resistance of Panicum miliaceum L. to phenanthrene toxicity based on growth response and antioxidant system assessment

et al. 2021

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Polycyclic aromatic hydrocarbons are a group of organic pollutants influencing different aspects of plants physiology. Physiological responses associated with the impact of phenanthrene (500, 1000, 1500, 2000 ppm) were analysed on Panicum miliaceum L. Seed germination was delayed in all treatments and 2000 ppm of phenanthrene (PHE) significantly retarded the germination rate (28 %) compared to control. The results revealed after 30 day of cultivation, only 1500 and 2000 ppm of PHE had negative impacts on growth parameters as well as photosynthetic pigment contents. Plants exposed to 500 and 1000 ppm of PHE showed an increase in the growth parameters without any symptoms of toxicity, indicating the high tolerance of seedlings to PHE. The activities of antioxidant enzymes were elevated in treated plants. In higher concentrations, H2O2 content also increased despite a reduction in malondialdehyde content. Furthermore, PHE had no effect on root phenol and shoot flavonoid contents and on shoot and root protein contents. Taken together, only higher concentrations of PHE triggered oxidative stress. It can be concluded PHE was not very toxic to P. miliaceum probably because of higher activity of antioxidant system involving in elimination of produced ROS even in plants treated by PHE higher concentrations.

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“…Pyrene and possibly other compounds of this group by disrupting the development and function of the roots in the early stages of plant growth are playing an important role in mineral nutrition, will disrupt the growth and also decrease it. (Dupuy et al, 2016). The main mechanism could have been that there was increased sensitivity of maize to pyrene as indicated by high concentration of MDA with increasing pyrene concentration.…”

Section: Discussionmentioning

confidence: 99%

Growth and antioxidant system responses of maize (Zea mays L.) seedling to different concentration of pyrene in a controlled environment

Houshani

Salehi-Lisar

Movafeghi

et al. 2019

AAS

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Polycyclic aromatic hydrocarbons (PAHs) are a class of organic pollutants effecting different aspects of plants physiology. To assess the physiological responses of plants to PAHs, maize (Zea mays) was treated with 25, 50, 75, and 100 ppm of pyrene and after 21 days, the activity of some antioxidant enzymes, malondialdehyde (MDA), total flavonoid, total anthocyanin, and soluble sugar contents were measured in shoots and roots of plants. Pyrene led to increase MDA content as well as CAT, POD, and SOD activities. Increase in pyrene concentration reduced all studied growth variables and significantly increased photosynthetic pigments contents of plants. Soluble sugar content was significantly higher in the shoot, while that was reduced in the roots through increasing of pyrene concentration (p < 0.05). Also, the increase of pyrene concentration decreased total flavonoid content compared to anthocyanin content. In conclusion, these findings supported the hypothesis that pyrene toxicity induces oxidative stress in the maize plant and it also increases the antioxidant systems in order to moderating stress condition. However, the antioxidant system of maize was not strong enough to eliminate all produced ROS at high concentrations, thus this caused oxidative damage to the plant and decreased its growth variables.

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Effect and localization of phenanthrene in maize roots

Cited by 30 publications

References 32 publications

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

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

High resistance of Panicum miliaceum L. to phenanthrene toxicity based on growth response and antioxidant system assessment

Growth and antioxidant system responses of maize (Zea mays L.) seedling to different concentration of pyrene in a controlled environment

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