Rhizodegradation of diesel and PAH contaminated soils with Miscanthus x giganteus: Soil, plants, microbes and pollutants interactions after two seasons

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13420%2F25%3A43899140" target="_blank" >RIV/44555601:13420/25:43899140 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24620/25:00013514 RIV/44555601:13440/25:43899140 RIV/44555601:13520/25:43899140

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0301479725011843" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0301479725011843</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jenvman.2025.125208" target="_blank" >10.1016/j.jenvman.2025.125208</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Rhizodegradation of diesel and PAH contaminated soils with Miscanthus x giganteus: Soil, plants, microbes and pollutants interactions after two seasons

Popis výsledku v původním jazyce

Miscanthus x giganteus, a high-yielding perennial grass, has recently shown promise for phytomanagement ofpetroleum hydrocarbons (PHC) contaminated sites, however the mechanisms of plant-soil interactions are notclear. This study followed the second growing season of miscanthus cultivation on soil spiked with represen-tatives of the most common PHC pollutants: diesel (dominantly aliphatic hydrocarbons), pyrene + phenanthrene(polycyclic aromatic hydrocarbons; PAH) and their mixture. Miscanthus demonstrated tolerance to PHC-contaminated soils, although high diesel concentrations significantly reduced biomass, limiting the overallbenefits of cultivation. This was evident in reduced carbon sequestration, plant-induced soil respiration and rootexudate content in diesel-treated soils. Despite comparable PHC levels in planted and unplanted soils after twoseasons, several indicators of ongoing rhizodegradation were observed. These included increased root exudatesproduction, a higher fungal-to-bacterial ratio and, at lower diesel levels, increased abundance of actinobacteria,i.e. shifts towards biodegraders capable of biodegradation of more recalcitrant components of petroleum. Acomprehensive analysis revealed significant PHC impacts on soil microbial communities. While biomass andrespiration increased, bacterial diversity decreased with increasing diesel concentrations. The microbial com-munity shifted towards potentially PHC-degrading microorganisms, such as fungi and specific bacterial genera(e.g., AlkB gene abundance increased 100-fold). PAH contamination primarily affected the abundance of thepahGP marker, but its overall impact was limited due to low residual PAH levels in the second season. Thesefindings show changing role of M. x giganteus in PHC bioremediation from the support of biodegradation in thefirst year to stabilization and enrichment of soil in the second.

Název v anglickém jazyce

Rhizodegradation of diesel and PAH contaminated soils with Miscanthus x giganteus: Soil, plants, microbes and pollutants interactions after two seasons

Popis výsledku anglicky

Miscanthus x giganteus, a high-yielding perennial grass, has recently shown promise for phytomanagement ofpetroleum hydrocarbons (PHC) contaminated sites, however the mechanisms of plant-soil interactions are notclear. This study followed the second growing season of miscanthus cultivation on soil spiked with represen-tatives of the most common PHC pollutants: diesel (dominantly aliphatic hydrocarbons), pyrene + phenanthrene(polycyclic aromatic hydrocarbons; PAH) and their mixture. Miscanthus demonstrated tolerance to PHC-contaminated soils, although high diesel concentrations significantly reduced biomass, limiting the overallbenefits of cultivation. This was evident in reduced carbon sequestration, plant-induced soil respiration and rootexudate content in diesel-treated soils. Despite comparable PHC levels in planted and unplanted soils after twoseasons, several indicators of ongoing rhizodegradation were observed. These included increased root exudatesproduction, a higher fungal-to-bacterial ratio and, at lower diesel levels, increased abundance of actinobacteria,i.e. shifts towards biodegraders capable of biodegradation of more recalcitrant components of petroleum. Acomprehensive analysis revealed significant PHC impacts on soil microbial communities. While biomass andrespiration increased, bacterial diversity decreased with increasing diesel concentrations. The microbial com-munity shifted towards potentially PHC-degrading microorganisms, such as fungi and specific bacterial genera(e.g., AlkB gene abundance increased 100-fold). PAH contamination primarily affected the abundance of thepahGP marker, but its overall impact was limited due to low residual PAH levels in the second season. Thesefindings show changing role of M. x giganteus in PHC bioremediation from the support of biodegradation in thefirst year to stabilization and enrichment of soil in the second.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

<a href="/cs/project/LM2023066" target="_blank" >LM2023066: Nanomateriály a nanotechnologie pro ochranu životního prostředí a udržitelnou budoucnost</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Environmental Management

ISSN

0301-4797

e-ISSN

1095-8630

Svazek periodika

neuveden

Číslo periodika v rámci svazku

381

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

001468278300001

EID výsledku v databázi Scopus

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