ArticleScientific reports2021
Shear stress affects the architecture and cohesion of Chlorella vulgaris biofilms.
Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed.
- Purifae - a modular bioreactor for microalgae culture made of biopolymer using additive techniques.Bioprocess and biosystems engineering · 2026Article
- Microfluidics unveils role of gravity and shear stress on Pseudomonas fluorescens motility and biofilm growth.NPJ biofilms and microbiomes · 2025Article
- Comparison of Photofermentative Hydrogen Production in Cylindrical Photobioreactors Using Different Mixing Systems.Microorganisms · 2025Article
- Modulation of biofilm growth by shear and fluctuations in turbulent environments.Scientific reports · 2025Article
- Bacterial species with different nanocolony morphologies have distinct flow-dependent colonization behaviors.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Effect of biofilm physical characteristics on their susceptibility to antibiotics: impacts of low-frequency ultrasound.NPJ biofilms and microbiomes · 2024Article
- The effect of light intensity on microalgae biofilm structures and physiology under continuous illumination.Scientific reports · 2024Article
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- Multichannel Microfluidic Platform for Temporal-Spatial Investigation of Niche Roles of Pseudomonas aeruginosa and Escherichia coli within a Dual-Species Biofilm.Applied and environmental microbiology · 2023Article
- Development of Antifouling Strategies for Marine Applications.Microorganisms · 2023Review
- Evaluation of Biofilm Cultivation Models for Efficacy Testing of Disinfectants againstMicroorganisms · 2023Article
- Nanoparticle Coatings on Glass Surfaces to PreventMicroorganisms · 2023Article
- The impact of light/dark regimes on structure and physiology ofFrontiers in microbiology · 2023Article
- Dynamic Changes in Biofilm Structures under Dynamic Flow Conditions.Applied and environmental microbiology · 2022Article
- Understanding photosynthetic biofilm productivity and structure through 2D simulation.PLoS computational biology · 2022Article
- Article
- Wetting of Dehydrated HydrophilicLangmuir : the ACS journal of surfaces and colloids · 2021Article
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Authors and funding
6 authors.
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Abstract
The architecture of microalgae biofilms has been poorly investigated, in particular with respect to shear stress, which is a crucial factor in biofilm-based reactor design and operation. To investigate how microalgae biofilms respond to different hydrodynamic regimes, the architecture and cohesion of Chlorella vulgaris biofilms were studied in flow-cells at three shear stress: 1.0, 6.5 and 11.0 mPa. Biofilm physical properties and architecture dynamics were monitored using a set of microscopic techniques such as, fluorescence recovery after photobleaching (FRAP) and particle tracking. At low shear, biofilms cohesion was heterogeneous resulting in a strong basal (close to the substrate) layer and in more loose superficial ones. Higher shear (11.0 mPa) significantly increased the cohesion of the biofilms allowing them to grow thicker and to produce more biomass, likely due to a biological response to resist the shear stress. Interestingly, an acclimation strategy seemed also to occur which allowed the biofilms to preserve their growth rate at the different hydrodynamic regimes. Our results are in accordance with those previously reported for bacteria biofilms, revealing some general physical/mechanical rules that govern microalgae life on substrates. These results may bring new insights about how to improve productivity and stability of microalgae biofilm-based systems.
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