Response of the fungal community to chronic petrogenic contamination in surface and subsurface soils

Schwarz, A, Adetutu, E, Juhasz, A, Aburto Medina, A, Ball, A and Shahsavari, E 2019, 'Response of the fungal community to chronic petrogenic contamination in surface and subsurface soils', Geoderma, vol. 338, pp. 206-215.

Document type: Journal Article
Collection: Journal Articles

Title Response of the fungal community to chronic petrogenic contamination in surface and subsurface soils
Author(s) Schwarz, A
Adetutu, E
Juhasz, A
Aburto Medina, A
Ball, A
Shahsavari, E
Year 2019
Journal name Geoderma
Volume number 338
Start page 206
End page 215
Total pages 10
Publisher Elsevier B.V.
Abstract The contamination of soil with petrogenic hydrocarbons represents a significant human health concern as a result of the carcinogenic and mutagenic properties of a number of compounds commonly found in petroleum products such as polycyclic aromatic hydrocarbons (PAHs). Although it is known that soil fungal communities play an important role in the degradation of highly branched petroleum hydrocarbons and high molecular weight PAHs, little information is available regarding the impact of petrogenic contamination on the structure and diversity of the fungal community and the impact of soil type on the fungal community response. Here, the aim of this study was to evaluate the impact of petrogenic contamination on fungal communities in two soil types. In sandy soils, the most contaminated test pit had the highest fungal diversity. Fungal profiles were dominated by species from the class Eurotiomycetes and included the well-known hydrocarbon-degrading species of Aspergillus and Eurotiales. The dominance of these species did not change with contamination concentration, suggesting a level of adaptability to multiple carbon sources. There appeared to be no correlation between fungal species diversity and contaminant concentration in the clayey soil. Similar dominant fungal species were identified in the clay and sandy soils, all of which were part of the phylum Ascomycota. The clayey soils had a higher species diversity and range-weighted richness compared to sandy soils, which may be a result of the pore connectivity theory i.e. as a result of low water connectivity in soils the formation of diverse communities is promoted through creation of microhabitats.
Subject Environmental Management
Microbial Ecology
Keyword(s) Fungal communities
Hydrocarbon degraders
ITS region
Total petroleum hydrocarbons
DOI - identifier 10.1016/j.geoderma.2018.12.004
Copyright notice © 2018 Elsevier B.V. All rights reserved.
ISSN 0016-7061
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