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

Berith Elkær Knudsen, Lea Ellegaard-Jensen, Christian Nyrop Albers, Soren Rosendahl, Jens Aamand

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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. (C) 2013 Elsevier Ltd. All rights reserved.
Original languageEnglish
JournalEnvironmental Pollution
Pages (from-to)122-127
Number of pages6
Publication statusPublished - 2013
Externally publishedYes


  • 2,6-dichlorobenzamide (BAM)
  • Consortium
  • Bacterial dispersal
  • Pesticide biodegradation
  • Fungal–bacterial interactions
  • SOIL
  • Fungal-bacterial interactions
  • aquifer
  • bioremediation
  • fungal bacterial consortium
  • mineralisation
  • moisture content
  • polluted soil
  • Fungi Plantae (Fungi, Microorganisms, Nonvascular Plants, Plants) - Phycomycetes [15900] Mortierella genus
  • Gram-Negative Aerobic Rods and Cocci Eubacteria Bacteria Microorganisms (Bacteria, Eubacteria, Microorganisms) - Pseudomonadaceae [06508] Aminobacter genus
  • Microorganisms (Bacteria, Eubacteria, Microorganisms) - Bacteria [05000] bacteria common
  • Plantae (Fungi, Microorganisms, Nonvascular Plants, Plants) - Fungi [15000] fungi common
  • 2,6-dichlorobenzamide pesticide, pollutant degradation
  • 31000, Physiology and biochemistry of bacteria
  • 37015, Public health - Air, water and soil pollution
  • 39008, Food microbiology - General and miscellaneous
  • 54512, Phytopathology - Nonparasitic diseases
  • 54600, Pest control: general, pesticides and herbicides
  • hyphe
  • quantitative real-time polymerase chain reaction qPCR laboratory techniques, genetic techniques
  • Bioprocess Engineering
  • Pesticides
  • Pollution Assessment Control and Management
  • Bacteria
  • Benzamides
  • Biodegradation, Environmental
  • Environmental Pollutants
  • Environmental Pollution
  • Groundwater
  • Hyphae
  • Soil Microbiology
  • Water Microbiology
  • 2008-58-4 2,6-dichlorobenzamide
  • Aquifers
  • Biodegradation
  • Bioremediation
  • Fungi
  • Hydrogeology
  • Microbiology
  • Polymerase chain reaction
  • Soil pollution
  • Bacterial degradation
  • Pesticide contaminations
  • Quantitative real-time polymerase chain reaction
  • Remediation technologies


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