Fungal hyphae stimulate bacterial degradation of 2,6-dichlorobenzamide (BAM)

TY - JOUR

T1 - Fungal hyphae stimulate bacterial degradation of 2,6-dichlorobenzamide (BAM)

AU - Knudsen, Berith Elkær

AU - Ellegaard-Jensen, Lea

AU - Albers, Christian Nyrop

AU - Rosendahl, Søren

AU - Aamand, Jens

PY - 2013/10

Y1 - 2013/10

N2 - Introduction of specific degrading microorganisms into polluted soil or aquifers is a promising remediation technology provided that the organisms survive and spread in the environment. We suggest that consortia, rather than single strains, may be better suited to overcome these challenges. Here we introduced a fungal-bacterial consortium consisting of Mortierella sp. LEJ702 and the 2,6-dichlorobenzamide (BAM)-degrading Aminobacter sp. MSH1 into small sand columns. A more rapid mineralisation of BAM was obtained by the consortium compared to MSH1 alone especially at lower moisture contents. Results from quantitative real-time polymerase chain reaction (qPCR) demonstrated better spreading of Aminobacter when Mortierella was present suggesting that fungal hyphae may stimulate bacterial dispersal. Extraction and analysis of BAM indicated that translocation of the compound was also affected by the fungal hyphae in the sand. This suggests that fungal-bacterial consortia are promising for successful bioremediation of pesticide contamination.

AB - Introduction of specific degrading microorganisms into polluted soil or aquifers is a promising remediation technology provided that the organisms survive and spread in the environment. We suggest that consortia, rather than single strains, may be better suited to overcome these challenges. Here we introduced a fungal-bacterial consortium consisting of Mortierella sp. LEJ702 and the 2,6-dichlorobenzamide (BAM)-degrading Aminobacter sp. MSH1 into small sand columns. A more rapid mineralisation of BAM was obtained by the consortium compared to MSH1 alone especially at lower moisture contents. Results from quantitative real-time polymerase chain reaction (qPCR) demonstrated better spreading of Aminobacter when Mortierella was present suggesting that fungal hyphae may stimulate bacterial dispersal. Extraction and analysis of BAM indicated that translocation of the compound was also affected by the fungal hyphae in the sand. This suggests that fungal-bacterial consortia are promising for successful bioremediation of pesticide contamination.

KW - 2,6-dichlorobenzamide (BAM)

KW - Consortium

KW - Bacterial dispersal

KW - Pesticide biodegradation

KW - Fungal–bacterial interactions

U2 - 10.1016/j.envpol.2013.06.013

DO - 10.1016/j.envpol.2013.06.013

M3 - Journal article

SN - 0269-7491

VL - 181

SP - 122

EP - 127

JO - Environmental Pollution

JF - Environmental Pollution

ER -