Linkage between bacterial and fungal rhizosphere communities in hydrocarbon-contaminated soils is related to plant phylogeny

Terrence Bell, Saad El-Din Hassan, Aurélien Lauron-Moreau, Fahad Al-Otaibi, Mohamed Hijri, Etienne Yergeau, Marc St-Arnaud

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

Phytoremediation is an attractive alternative to excavating and chemically treating contaminated soils. Certain plants can directly bioremediate by sequestering and/or transforming pollutants, but plants may also enhance bioremediation by promoting contaminant-degrading microorganisms in soils. In this study, we used high-throughput sequencing of bacterial 16S rRNA genes and the fungal internal transcribed spacer (ITS) region to compare the community composition of 66 soil samples from the rhizosphere of planted willows (Salix spp.) and six unplanted control samples at the site of a former petrochemical plant. The Bray-Curtis distance between bacterial communities across willow cultivars was significantly correlated with the distance between fungal communities in uncontaminated and moderately contaminated soils but not in highly contaminated (HC) soils (>2000 mg kg -1 hydrocarbons). The mean dissimilarity between fungal, but not bacterial, communities from the rhizosphere of different cultivars increased substantially in the HC blocks. This divergence was partly related to high fungal sensitivity to hydrocarbon contaminants, as demonstrated by reduced Shannon diversity, but also to a stronger influence of willows on fungal communities. Abundance of the fungal class Pezizomycetes in HC soils was directly related to willow phylogeny, with Pezizomycetes dominating the rhizosphere of a monophyletic cluster of cultivars, while remaining in low relative abundance in other soils. This has implications for plant selection in phytoremediation, as fungal associations may affect the health of introduced plants and the success of co-inoculated microbial strains. An integrated understanding of the relationships between fungi, bacteria and plants will enable the design of treatments that specifically promote effective bioremediating communities.

Original languageEnglish (US)
Pages (from-to)331-343
Number of pages13
JournalISME Journal
Volume8
Issue number2
DOIs
StatePublished - Feb 26 2014

Fingerprint

Rhizosphere
Phylogeny
Hydrocarbons
Salix
polluted soils
linkage (genetics)
rhizosphere
hydrocarbons
Pezizomycetes
phylogeny
Soil
hydrocarbon
cultivar
fungal communities
phytoremediation
Environmental Biodegradation
bacterial communities
pollutant
cultivars
petrochemicals

All Science Journal Classification (ASJC) codes

  • Microbiology
  • Ecology, Evolution, Behavior and Systematics

Cite this

Bell, T., El-Din Hassan, S., Lauron-Moreau, A., Al-Otaibi, F., Hijri, M., Yergeau, E., & St-Arnaud, M. (2014). Linkage between bacterial and fungal rhizosphere communities in hydrocarbon-contaminated soils is related to plant phylogeny. ISME Journal, 8(2), 331-343. https://doi.org/10.1038/ismej.2013.149
Bell, Terrence ; El-Din Hassan, Saad ; Lauron-Moreau, Aurélien ; Al-Otaibi, Fahad ; Hijri, Mohamed ; Yergeau, Etienne ; St-Arnaud, Marc. / Linkage between bacterial and fungal rhizosphere communities in hydrocarbon-contaminated soils is related to plant phylogeny. In: ISME Journal. 2014 ; Vol. 8, No. 2. pp. 331-343.
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Bell, T, El-Din Hassan, S, Lauron-Moreau, A, Al-Otaibi, F, Hijri, M, Yergeau, E & St-Arnaud, M 2014, 'Linkage between bacterial and fungal rhizosphere communities in hydrocarbon-contaminated soils is related to plant phylogeny', ISME Journal, vol. 8, no. 2, pp. 331-343. https://doi.org/10.1038/ismej.2013.149

Linkage between bacterial and fungal rhizosphere communities in hydrocarbon-contaminated soils is related to plant phylogeny. / Bell, Terrence; El-Din Hassan, Saad; Lauron-Moreau, Aurélien; Al-Otaibi, Fahad; Hijri, Mohamed; Yergeau, Etienne; St-Arnaud, Marc.

In: ISME Journal, Vol. 8, No. 2, 26.02.2014, p. 331-343.

Research output: Contribution to journalArticle

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AU - El-Din Hassan, Saad

AU - Lauron-Moreau, Aurélien

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AU - Hijri, Mohamed

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AU - St-Arnaud, Marc

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