Plant-air partition coefficients for thirteen urban conifer tree species: Estimating the best gas and particulate matter associated PAH removers

Giráldez, Pablo; Aboal, J.R.; Fernández, J. Ángel; Guardo, Antonio Di; Terzaghi, Elisa

doi:10.1016/j.envpol.2022.120409

Cited by 15 publications

(3 citation statements)

References 37 publications

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“…In this study, the mixtures of 16 PAHs at environmental levels, not individual PAHs with high toxicity, were used to investigate the toxicological effects on the gene transcription levels of the leaves of Rosa chinensis Jacq. because these 16 types of PAHs have been frequently detected in the ambient environment [ 2 , 11 , 12 , 13 , 14 , 15 , 16 ]. Because individual PAHs with low toxicity could not influence the toxicity of other PAH species [ 1 , 7 ], the findings of this study could reflect the physiological conditions of leaves under exposure to PAHs at environmental levels in real situations.…”

Section: Resultsmentioning

confidence: 99%

“…The 16 types of PAHs were naphthalene, anthracene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, benzo (a) anthracene, benzo (b) fluoranthene, benzo (k) fluoranthene, picene, indeno (1, 2, 3-cd) pyrene, benzo (g, h, i)perylene, dibenzo (a, i)pyrene and dibenzo (a, h)pyrene. We used the mixtures of 16 PAHs as the exposure chemicals because these 16 types of PAHs are frequently detected in the ambient environment [ 2 , 14 , 15 , 16 ]. The choice of the mixtures of PAHs rather than individual PAHs with high toxicity in the exposure experiment was in accord with the real environmental conditions [ 11 , 12 , 13 ].…”

Section: Methodsmentioning

confidence: 99%

“…The ecological remediation strategy is recommended as a cheap and sustainable environmental protection tool for mitigating PAHs with high toxicity in the ambient environment [ 11 , 12 , 13 ]. Trees could serve as filters for PAHs, and the leaves of plants could be treated as a reactor to remove ambient PAHs [ 14 , 15 , 16 ]. A previous study indicated that trees can remove approximately 710,000 tons of air pollutants, including NO 2 , SO 2 and air pollutants, in particulate matter in 55 cities in the United States [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

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Whole-Transcriptome Analysis on the Leaves of Rosa chinensis Jacq. under Exposure to Polycyclic Aromatic Hydrocarbons

Tian

Liu

et al. 2023

Toxics

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The leaves of plants can be recommended as a cheap and sustainable environmental protection tool to mitigate PAHs with high toxicity in the ambient environment because they can serve as a reactor to remove ambient PAHs. Although previous studies have demonstrated that PAHs exhibit toxicological features, our knowledge about how ambient PAHs influence the leaves of plants is limited regarding the leaves of plants reducing ambient PAHs as a reactor. In this study, 1-year-old Rosa chinensis Jacq. with good growth potential was selected as a model plant. The leaves of Rosa chinensis Jacq. were exposed to 16 types of PAHs in the environmental concentration exposure group (0.1 μg L−1) and high-concentration exposure group (5 μg L−1) for seven days. In comparison, the leaves of Rosa chinensis Jacq. were exposed to de-ionized water and were chosen as the control group. During the exposure periods, the physiological parameters of leaves including, chlorophyll value, water content, temperature and nitrogen, were monitored using a chlorophyll meter. After 7 days of exposure, the leaves in the control and exposure groups were collected and used for whole-transcriptome analysis. Our results demonstrate that significant differentially expressed genes were observed in the leaves of Rosa chinensis Jacq. exposed to individual PAHs at 5 μg L−1 compared to the control group. These differentially expressed genes were involved in seven main pathways using bioinformatic analyses. In contrast, the levels of PAHs at environmentally relevant concentrations had negligible impacts on the physiological parameters and the gene transcription levels of the leaves of Rosa chinensis Jacq. Our results may provide direct evidence to remove ambient PAHs using terrestrial trees without considering the risk of PAHs at environmentally relevant concentrations on the leaves of terrestrial plants.

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