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Title: Bacterial biofilm formation on the hyphae of ectomycorrhizal fungi: a widespread ability under controls?

Abstract

Here, ectomycorrhizal (ECM) fungi establish symbiosis with roots of most trees of boreal and temperate ecosystems and are major drivers of nutrient fluxes between trees and the soil. ECM fungi constantly interact with bacteria all along their life cycle and the extended networks of hyphae provide a habitat for complex bacterial communities. Despite the important effects these bacteria can have on the growth and activities of ECM fungi, little is known about the mechanisms by which these microorganisms interact. Here we investigated the ability of bacteria to form biofilm on the hyphae of the ECM fungus Laccaria bicolor. We showed that the ability to form biofilms on the hyphae of the ECM fungus is widely shared among soil bacteria. Conversely, some fungi, belonging to the Ascomycete class, did not allow for the formation of bacterial biofilms on their surfaces. The formation of biofilms was also modulated by the presence of tree roots and ectomycorrhizae, suggesting that biofilm formation does not occur randomly in soil but that it is regulated by several biotic factors. In addition, our study demonstrated that the formation of bacterial biofilm on fungal hyphae relies on the production of networks of filaments made of extracellular DNA.

Authors:
 [1];  [2]; ORCiD logo [3];  [2]
  1. Univ. de Lorraine, Champenoux (France); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. de Lorraine, Champenoux (France)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1468278
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
FEMS Microbiology Ecology (Online)
Additional Journal Information:
Journal Volume: 94; Journal Issue: 7; Journal ID: ISSN 1574-6941
Publisher:
Federation of European Microbiological Societies
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; biofilms; eDNA; ectomycorrhizal symbiosis; fungal/bacterial interactions

Citation Formats

Miquel Guennoc, Cora, Rose, Christophe, Labbé, Jessy, and Deveau, Aurélie. Bacterial biofilm formation on the hyphae of ectomycorrhizal fungi: a widespread ability under controls?. United States: N. p., 2018. Web. doi:10.1093/femsec/fiy093.
Miquel Guennoc, Cora, Rose, Christophe, Labbé, Jessy, & Deveau, Aurélie. Bacterial biofilm formation on the hyphae of ectomycorrhizal fungi: a widespread ability under controls?. United States. doi:10.1093/femsec/fiy093.
Miquel Guennoc, Cora, Rose, Christophe, Labbé, Jessy, and Deveau, Aurélie. Thu . "Bacterial biofilm formation on the hyphae of ectomycorrhizal fungi: a widespread ability under controls?". United States. doi:10.1093/femsec/fiy093. https://www.osti.gov/servlets/purl/1468278.
@article{osti_1468278,
title = {Bacterial biofilm formation on the hyphae of ectomycorrhizal fungi: a widespread ability under controls?},
author = {Miquel Guennoc, Cora and Rose, Christophe and Labbé, Jessy and Deveau, Aurélie},
abstractNote = {Here, ectomycorrhizal (ECM) fungi establish symbiosis with roots of most trees of boreal and temperate ecosystems and are major drivers of nutrient fluxes between trees and the soil. ECM fungi constantly interact with bacteria all along their life cycle and the extended networks of hyphae provide a habitat for complex bacterial communities. Despite the important effects these bacteria can have on the growth and activities of ECM fungi, little is known about the mechanisms by which these microorganisms interact. Here we investigated the ability of bacteria to form biofilm on the hyphae of the ECM fungus Laccaria bicolor. We showed that the ability to form biofilms on the hyphae of the ECM fungus is widely shared among soil bacteria. Conversely, some fungi, belonging to the Ascomycete class, did not allow for the formation of bacterial biofilms on their surfaces. The formation of biofilms was also modulated by the presence of tree roots and ectomycorrhizae, suggesting that biofilm formation does not occur randomly in soil but that it is regulated by several biotic factors. In addition, our study demonstrated that the formation of bacterial biofilm on fungal hyphae relies on the production of networks of filaments made of extracellular DNA.},
doi = {10.1093/femsec/fiy093},
journal = {FEMS Microbiology Ecology (Online)},
issn = {1574-6941},
number = 7,
volume = 94,
place = {United States},
year = {2018},
month = {5}
}

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Cited by: 3 works
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