Active phytoextraction of toluene shifts the microbiome and enhances degradation capacity in hybrid poplar
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Le résumé fourni par la source
Hybrid poplars are widely recognized for their effectiveness in remediating subsurface aromatic hydrocarbon contaminants, including benzene, toluene, ethylbenzene, and xylene isomers (BTEX). While BTEX compounds are frequently found in the transpiration streams of poplars at contaminated sites, the microbial dynamics within these trees, particularly in response to hydrocarbon exposure, remain underexplored. This study utilized high-throughput amplicon sequencing to investigate the trunk microbiome in hybrid poplars at a field-scale toluene phytoremediation site. Across the plant growth season (spring to late summer), we observed a significant seasonal increase in bacterial diversity and richness, particularly in trees located in areas with the highest groundwater and in planta toluene concentrations. During late summer, the microbiomes of these trees were enriched with hydrocarbon-degrading taxa, including Acinetobacter , Pseudomonas , Burkholderia , Sandaracinobacter , and Allorhizobium–Rhizobium, and exhibited enhanced capacities for aerobic toluene degradation based on functional predictions. These findings reveal selective pressures exerted by hydrocarbons on endophytic microbial communities and underscore their role in mitigating volatile contaminant emissions. This study advances our understanding of microbial dynamics in phytoremediation systems and highlights the potential for leveraging endophytes to optimize contaminant degradation. • In planta toluene exposure drives seasonal shifts in Hybrid poplar trunks microbiome. • Microbial community shifts indicate strong hydrocarbon-driven selection pressures. • Enriched hydrocarbon-degrading taxa were found in high-toluene exposure areas. • Late summer microbiomes showed enhanced aerobic toluene degradation capacity. • Microbiome analysis enhances phytoremediation strategies at hydrocarbon-impacted sites.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Active phytoextraction of toluene shifts the microbiome and enhances degradation capacity in hybrid poplar
- Date Crossref
- 01/01/2025
- Éditeur
- Elsevier BV
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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University of Guelph Morwick G360 Groundwater Research Institute pays non établi dans la noticeUniversité ou école supérieure
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University of Gothenburg Earth Science Department pays non établi dans la noticeUniversité ou école supérieure
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Geosyntec Consultants (United States) pays non établi dans la noticeEntreprise
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Missouri University of Science and Technology Architectural and Environmental Engineering pays non établi dans la noticeUniversité ou école supérieure
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University of Waterloo Department of Earth and Environmental Sciences pays non établi dans la noticeUniversité ou école supérieure
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EcoMetrix pays non établi dans la noticeEntreprise
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School of Environmental Sciences pays non établi dans la noticeUniversité ou école supérieure
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Naperville pays non établi dans la noticeInstitution
Morwick G360 Groundwater Research Institute — University of Guelph, Earth Science Department — University of Gothenburg et Geosyntec Consultants (United States), avec 5 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.