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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F25%3A43932431" target="_blank" >RIV/60461373:22330/25:43932431 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0301479725011843?pes=vor&utm_source=clarivate&getft_integrator=clarivate" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0301479725011843?pes=vor&utm_source=clarivate&getft_integrator=clarivate</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>

Result language

angličtina

Original language name

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

Original language description

Miscanthus x giganteus, a high-yielding perennial grass, has recently shown promise for phytomanagement of petroleum hydrocarbons (PHC) contaminated sites, however the mechanisms of plant-soil interactions are not clear. This study followed the second growing season of miscanthus cultivation on soil spiked with representatives of the most common PHC pollutants: diesel (dominantly aliphatic hydrocarbons), pyrene + phenanthrene (polycyclic aromatic hydrocarbons; PAH) and their mixture. Miscanthus demonstrated tolerance to PHCcontaminated soils, although high diesel concentrations significantly reduced biomass, limiting the overall benefits of cultivation. This was evident in reduced carbon sequestration, plant-induced soil respiration and root exudate content in diesel-treated soils. Despite comparable PHC levels in planted and unplanted soils after two seasons, several indicators of ongoing rhizodegradation were observed. These included increased root exudates production, 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. A comprehensive analysis revealed significant PHC impacts on soil microbial communities. While biomass and respiration increased, bacterial diversity decreased with increasing diesel concentrations. The microbial community 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 the pahGP marker, but its overall impact was limited due to low residual PAH levels in the second season. These findings show changing role of M. x giganteus in PHC bioremediation from the support of biodegradation in the first year to stabilization and enrichment of soil in the second.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10500 - Earth and related environmental sciences

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Environmental Management

ISSN

0301-4797

e-ISSN

1095-8630

Volume of the periodical

381

Issue of the periodical within the volume

květen 2025

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

nestránkováno

UT code for WoS article

001468278300001

EID of the result in the Scopus database

2-s2.0-105001832266