Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/1537
Title: Ectomycorrhizas impede phytoremediation of polycyclic aromatic hydrocarbons (PAHs) both within and beyond the rhizosphere
Authors: Joner, E.
Leyval, C.
COLPAERT, Jan 
Issue Date: 2006
Publisher: Elsevier
Source: ENVIRONMENTAL POLLUTION, 142(1). p. 34-38
Abstract: Exploitation of mycorrhizas to enhance phytoremediation of organic pollutants has received attention recently due to their positive effects on establishment of plants in polluted soils. Some evidence exist that ectomycorrhizas enhance the degradation of pollutants of low recalcitrance, while less easily degradable polyaromatic molecules have been degraded only by some of these fungi in vitro. Natural polyaromatic (humic) substances are degraded more slowly in soil where ectomycorrhizal fungi are present, thus phytoremediation of recalcitrant pollutants may not benefit from the presence of these fungi. Using a soil spiked with three polycyclic aromatic hydrocarbons (PAHs) and an industrially polluted soil (1 g kg−1 of ∑12 PAHs), we show that the ectomycorrhizal fungus Suillus bovinus, forming hydrophobic mycelium in soil that would easily enter into contact with hydrophobic pollutants, impedes rather than promotes PAH degradation. This result is likely to be a nutrient depletion effect caused by fungal scavenging of mineral nutrients.
Keywords: Bioremediation; Mycorrhiza; Persistent organic pollutants; Phytoremediation; Soil
Document URI: http://hdl.handle.net/1942/1537
ISSN: 0269-7491
e-ISSN: 1873-6424
DOI: 10.1016/j.envpol.2005.09.007
ISI #: 000237644600004
Category: A1
Type: Journal Contribution
Validations: ecoom 2007
Appears in Collections:Research publications

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