Skip to Main content Skip to Navigation
Journal articles

Conservation of acquired morphology and community structure in aged biofilms after facing environmental stress

Abstract : The influence of growth history on biofilm morphology and microbial community structure is poorly studied despite its important role for biofilm development. Here, biofilms were exposed to a change in hydrodynamic conditions at different growth stages and we observed how biofilm age affected the change in morphology and bacterial community structure. Biofilms were developed in two bubble column reactors, one operated under constant shear stress and one under variable shear stress. Biofilms were transferred from one reactor to the other at different stages in their development by withdrawing and inserting the support medium from one reactor to the other. The developments of morphology and microbial community structure were followed by image analysis and molecular tools. When transferred early in biofilm development, biofilms adapted to the new hydrodynamic conditions and adopted features of the biofilm already developed in the receiving reactor. Biofilms transferred at a late state of biofilm development continued their initial trajectories of morphology and community development even in a new environment. These biofilms did not immediately adapt to their new environment and kept features acquired during their early growth phase, a property we called memory effect.
Document type :
Journal articles
Complete list of metadata

https://hal.inrae.fr/hal-02633741
Contributor : Migration Prodinra <>
Submitted on : Wednesday, May 27, 2020 - 1:24:57 PM
Last modification on : Thursday, November 5, 2020 - 9:08:38 AM

Identifiers

Citation

Thibaut Saur, Renaud Escudie, Nicolas Bernet, Kim Milferstedt. Conservation of acquired morphology and community structure in aged biofilms after facing environmental stress. Water Research, IWA Publishing, 2016, 88, pp.164-172. ⟨10.1016/j.watres.2015.10.012⟩. ⟨hal-02633741⟩

Share

Metrics

Record views

879