Uptake of polycyclic aromatic hydrocarbons (PAHs) in salt marsh plants Spartina alterniflora grown in contaminated sediments

Watts, Alison; Ballestero, Thomas P.; Gardner, Kevin H.

doi:10.1016/j.chemosphere.2005.07.006

Cited by 80 publications

(47 citation statements)

References 13 publications

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“…Results from the present and previous studies [8,13,[20][21][22] demonstrate that the plants grown on contaminated-soils may contain PAHs and HMs in their tissues which pose a major health concern. PAHs may be taken up through several pathways including the aerial absorption of volatile compounds by leaves, deposition and penetration of contaminated soil particles and dusts on leaves, and soil-to-root transfer of contaminants followed by subsequent translocation by the transpiration stream.…”

Section: Discussionsupporting

confidence: 53%

Accumulation of polycyclic aromatic hydrocarbons and heavy metals in lettuce grown in the soils contaminated with long-term wastewater irrigation

Khan

Lin

Zhang

et al. 2008

Journal of Hazardous Materials

252

119

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Accumulation of polycyclic aromatic hydrocarbons (PAHs) and heavy metals (HMs) by crop plants from contaminated soils may pose health risks. A greenhouse pot experiment using lettuce (Lactuca satuva L.) as a representative vegetable was conducted to assess the concentrations of PAHs and HMs in vegetables grown in wastewater-contaminated soils. The concentrations of total PAHs were ranged from 1.5 to 3.4 mg kg −1 in the contaminated soils, while 1.2 mg kg −1 in the reference soil. Linear regression analyses showed that the relationships between soil and shoot PAH concentrations were stronger for LMW-PAHs (R 2 between 0.51 and 0.92) than for HMW-PAHs (R 2 0.02 and 0.60), suggesting that translocation for LMW-PAHs is faster than HMW-PAHs. Furthermore, the data imply that root uptake was the main pathway for HMW-PAHs accumulation. The plant shoots were also highly contaminated with HMs, particularly Cd (0.4-0.9 mg kg −1 ), Cr (3.4-4.1 mg kg −1 ), Ni (11.7-15.1 mg kg −1 ) and Pb (2.3-5.3 mg kg −1 ), and exceed the guidance limits set by State Environmental Protection Administration (SEPA), China and the World Health Organization (WHO). This study highlights the potential health risks associated with cultivation and consumption of leafy vegetables on wastewater-contaminated soils.

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Section: Discussionsupporting

confidence: 53%

Accumulation of polycyclic aromatic hydrocarbons and heavy metals in lettuce grown in the soils contaminated with long-term wastewater irrigation

Khan

Lin

Zhang

et al. 2008

Journal of Hazardous Materials

252

119

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“…Nevertheless, in terms of what could be predicted to be differentially expressed (DE) in leaves of willow due to petroleum hydrocarbon contamination in soil, the following would be expected: general stress responses (potentially including oxidative stress from overproduction of reactive oxygen species; Yurekli and Porgali, 2006), indirect treatment-specific interactions (such as salinity and drought response interactions; Popko et al, 2010;Bauddh and Singh, 2012), and direct responses to petroleum hydrocarbons. In terms of a direct response, there is little evidence suggesting similar organic contaminates are often absorbed and mobilized to above-ground tissue (Alkio et al, 2005;Watts et al, 2006;El Amrani et al, 2015;Shiri et al, 2015) or metabolized to any degree by willow directly. There is, however, a growing body of evidence pertaining to metaorganismal interactions whereby a multitude of organisms collectively exploit these unique environmental conditions (Weyens et al, 2009;Kang et al, 2012;Bell et al, 2014a;Yergeau et al, 2014;Gonzalez et al, 2015).…”

mentioning

confidence: 99%

Comparative Transcriptomic Approaches Exploring Contamination Stress Tolerance in Salix sp. Reveal the Importance for a Metaorganismal de Novo Assembly Approach for Nonmodel Plants

et al. 2016

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Metatranscriptomic study of nonmodel organisms requires strategies that retain the highly resolved genetic information generated from model organisms while allowing for identification of the unexpected. A real-world biological application of phytoremediation, the field growth of 10 Salix cultivars on polluted soils, was used as an exemplar nonmodel and multifaceted crop response well-disposed to the study of gene expression. Sequence reads were assembled de novo to create 10 independent transcriptomes, a global transcriptome, and were mapped against the Salix purpurea 94006 reference genome. Annotation of assembled contigs was performed without a priori assumption of the originating organism. Global transcriptome construction from 3.03 billion paired-end reads revealed 606,880 unique contigs annotated from 1588 species, often common in all 10 cultivars. Comparisons between transcriptomic and metatranscriptomic methodologies provide clear evidence that nonnative RNA can mistakenly map to reference genomes, especially to conserved regions of common housekeeping genes, such as actin, a/b-tubulin, and elongation factor 1-a. In Salix, Rubisco activase transcripts were down-regulated in contaminated trees across all 10 cultivars, whereas thiamine thizole synthase and CP12, a Calvin Cycle master regulator, were uniformly up-regulated. De novo assembly approaches, with unconstrained annotation, can improve data quality; care should be taken when exploring such plant genetics to reduce de facto data exclusion by mapping to a single reference genome alone. Salix gene expression patterns strongly suggest cultivar-wide alteration of specific photosynthetic apparatus and protection of the antenna complexes from oxidation damage in contaminated trees, providing an insight into common stress tolerance strategies in a real-world phytoremediation system.Coppiced willows have the ability to produce high biomass yields in temperate regions under challenging conditions and have positive impacts on biodiversity (Labrecque et al

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“…Wild and Jones 1992;Nicola et al 2005;Kipopoulou et al 1999;Maillacheruvu and Safaai 2002;Watts et al 2006;Fismes et al 2002, Gao andZhu 2004). Most of these studies found a strong correlation between soil and root concentrations, but the relationship between PAH concentrations in soil and plant foliage is less clear.…”

Section: Transport Mechanismsmentioning

confidence: 92%

Soil and Atmospheric Inputs to PAH Concentrations in Salt Marsh Plants

Watts

Ballestero

Gardner

2007

Water Air Soil Pollut

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Polycyclic aromatic hydrocarbons (PAHs) were measured in two wetland plant species grown outdoors in pots of sediment contaminated with up to 730,000 μg/kg total PAHs. After approximately 3 months, the plants were harvested, cleaned, and analyzed for an expanded suite of PAHs which included both the 16 priority PAHs and 22 alkyl PAH homologs. Sediment and air samples were also collected and analyzed. PAH compounds were detected in all of the samples, with the highest concentrations in the contaminated sediment. The root sample concentrations were generally about one order of magnitude lower than that of the sediment, and were strongly correlated with the concentration in the sediment in which they were grown. The concentrations in foliage were much lower and did not correlate with sediment concentration. Concentrations of low molecular weight PAH compounds detected in the foliage were not significantly lower in plants grown in control sediments, suggesting that the sediment is not the primary source of these PAHs. Several high molecular weight PAHs were detected only in plants grown in contaminated sediment. Plants of both species grown in control sediment were larger than plants grown in contaminated sediment.

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Uptake of polycyclic aromatic hydrocarbons (PAHs) in salt marsh plants Spartina alterniflora grown in contaminated sediments

Cited by 80 publications

References 13 publications

Accumulation of polycyclic aromatic hydrocarbons and heavy metals in lettuce grown in the soils contaminated with long-term wastewater irrigation

Accumulation of polycyclic aromatic hydrocarbons and heavy metals in lettuce grown in the soils contaminated with long-term wastewater irrigation

Comparative Transcriptomic Approaches Exploring Contamination Stress Tolerance in Salix sp. Reveal the Importance for a Metaorganismal de Novo Assembly Approach for Nonmodel Plants

Soil and Atmospheric Inputs to PAH Concentrations in Salt Marsh Plants

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