Legacy Effects of Phytoremediation on Plant-Associated Prokaryotic Communities in Remediated Subarctic Soil Historically Contaminated with Petroleum Hydrocarbons

Papik, Jakub; Strejcek, Michal; Musilová, Lucie; Guritz, Rodney; Leewis, Mary-Cathrine; Leigh, Mary Beth; Uhlík, Ondřej

doi:10.1128/spectrum.04448-22

Cited by 2 publications

(2 citation statements)

References 71 publications

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“…These treatment-scale effects can extend beyond the bulk-soil community into the endosphere of the plants themselves. In a sister study, we also found that the choice of initial phytoremediation strategy drove the succession of endophytic bacteria associated with colonizing vegetation (Papik et al, 2023).…”

Section: Discussionmentioning

confidence: 67%

“…The original phytoremediation study by Reynolds and colleagues was designed to investigate the effects of combinations of planting and fertilizer treatments on the remediation of soils contaminated with either crude oil or diesel fuel (Reynolds et al, 1997a;Reynolds and Koenen, 1997;Reynolds et al, 1999). The site was re-examined to assess the effects of the original treatment on hydrocarbon loss, plant community composition, and the bacterial rhizosphere and endosphere communities after 15 years without active site management (Leewis et al, 2013;Papik et al, 2023). In the current study, we build upon this previous work and aim to i) evaluate the interactive effects of petroleum contamination and phytoremediation on site recovery over time; and ii) identify the factors that drive vegetation community structure, soil microbial community structure and function, and total petroleum hydrocarbon (TPH) loss.…”

Section: Introductionmentioning

confidence: 99%

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Long-term legacy of phytoremediation on plant succession and soil microbial communities in petroleum-contaminated sub-Arctic soils

Leewis,

Kasanke,

Uhlik

et al. 2023

Preprint

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Abstract. Phytoremediation can be a cost-effective method of restoring contaminated soils using plants and associated microorganisms. Most studies follow the impacts of phytoremediation solely across the treatment period and have not explored long-term ecological effects. In 1995, a phytoremediation study was initiated near Fairbanks, Alaska, to determine how the introduction of annual grasses and/or fertilizer would influence degradation of petroleum hydrocarbons (PHCs). After one year, grass and/or fertilizer treated soils showed greater decreases in PHC concentrations compared to untreated plots. The site was then left for 15 years with no active site management. In 2011, we re-examined the site to explore the legacy of phytoremediation on contaminant disappearance, as well as plant and soil microbial ecology. We found that the recruited vegetation, along with current bulk soil microbial community structure and function were all heavily influenced by initial phytoremediation treatment. The number of diesel-degrading microorganisms (DDM) was positively correlated with increasing amounts of vegetation on the site, and inversely correlated with PHC concentrations. Even 15 years later, the initial use of fertilizer had significant effects on microbial biomass and microbial community structure activities. We conclude that phytoremediation treatment has long-term, legacy effects on the plant community, which, in turn, impacts microbial community structure, function, and continued TPH disappearance. It is therefore important to consider phytoremediation strategies that not only influence site remediation rates in the short-term, but that also prime the site for restoration of vegetation across the long-term.

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Section: Discussionmentioning

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Long-term legacy of phytoremediation on plant succession and soil microbial communities in petroleum-contaminated sub-Arctic soils

Leewis,

Kasanke,

Uhlik

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Long-term legacy of phytoremediation on plant succession and soil microbial communities in petroleum-contaminated sub-Arctic soils

Leewis,

Kasanke,

Uhlik

et al. 2024

SOIL

View full text Add to dashboard Cite

Abstract. Phytoremediation can be a cost-effective method of restoring contaminated soils using plants and associated microorganisms. Most studies follow the impacts of phytoremediation solely across the treatment period and have not explored long-term ecological effects. In 1995, a phytoremediation study was initiated near Fairbanks, Alaska, to determine how the introduction of annual grasses and/or fertilizer would influence degradation of petroleum hydrocarbons (PHCs). After 1 year, grass and/or fertilizer-treated soils showed greater decreases in PHC concentrations compared to untreated plots. The site was then left for 15 years with no active site management. In 2011, we re-examined the site to explore the legacy of phytoremediation on contaminant disappearance, as well as on plant and soil microbial ecology. We found that the recruited vegetation and the current bulk soil microbial community structure and functioning were all heavily influenced by initial phytoremediation treatment. The number of diesel-degrading microorganisms (DDMs) was positively correlated with the percentage cover of vegetation at the site, which was influenced by initial treatment. Even 15 years later, the initial use of fertilizer had significant effects on microbial biomass, community structure, and activity. We conclude that phytoremediation treatment has long-term, legacy effects on the plant community, which, in turn, impact microbial community structure and functioning. It is therefore important to consider phytoremediation strategies that not only influence site remediation rates in the short-term but also prime the site for the restoration of vegetation over the long-term.

show abstract

Legacy Effects of Phytoremediation on Plant-Associated Prokaryotic Communities in Remediated Subarctic Soil Historically Contaminated with Petroleum Hydrocarbons

Cited by 2 publications

References 71 publications

Long-term legacy of phytoremediation on plant succession and soil microbial communities in petroleum-contaminated sub-Arctic soils

Long-term legacy of phytoremediation on plant succession and soil microbial communities in petroleum-contaminated sub-Arctic soils

Long-term legacy of phytoremediation on plant succession and soil microbial communities in petroleum-contaminated sub-Arctic soils

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