Long-term in situ dynamics of the fungal communities in a multi-contaminated soil are mainly driven by plants

FEMS Microbiology Ecology
Cécile ThionCorinne Leyval

Abstract

The fungal communities of a multi-contaminated soil polluted by polycyclic aromatic hydrocarbons and heavy metals (NM) were studied within a long-term in situ experiment of natural attenuation assisted by plants. Three treatments were monitored: bare soil (NM-BS), soil planted with alfalfa and inoculated with mycorrhizal fungi (NM-Msm), and soil with spontaneous vegetation (NM-SV). The same soil after thermal desorption (TD) was planted with alfalfa and inoculated with mycorrhizal fungi (TD-Msm). Twice a year for 5 years, the fungal abundance and the community structure were evaluated by real-time PCR and temporal temperature gradient gel electrophoresis targeting 18S rRNA genes. The fungal abundance increased over time and was higher in planted than in bare NM soil and in TD than in NM soil. The Shannon diversity index (H') increased during the first 2 years with the emergence of more than 30 ribotypes, but decreased after 3 years with the selection of a few competitive species, mostly Ascomycetes. H' was higher under complex plant assemblage (NM-SV) than in the NM-BS plots but did not differ between NM and TD soils planted with alfalfa. These results indicated that even in a highly polluted soil, the plant cover was the main ...Continue Reading

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Citations

Jan 3, 2013·Microbial Biotechnology·Mélanie MorelEric Gelhaye
Jan 27, 2015·Environmental Science and Pollution Research International·Aurélie CébronCorinne Leyval
Aug 28, 2015·Environmental Science and Pollution Research International·Denis FaureUNKNOWN Microbial Ecology EC2CO consortium
Aug 20, 2014·The Science of the Total Environment·Audrey PernotPierre Faure
Jan 20, 2018·The New Phytologist·Christopher J BarnesGary D Bending
Aug 8, 2020·Frontiers in Microbiology·Francesco GuarinoStefano Castiglione
Aug 24, 2018·Environmental Science and Pollution Research International·Amélia BourceretAurélie Cébron
Dec 4, 2020·Journal of Hazardous Materials·Florian LemmelAurélie Cébron
Sep 28, 2017·The Science of the Total Environment·Quentin VincentCorinne Leyval

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